Welcome to Uberlândia! It is a great pleasure to receive you at the 17 th Brazilian Workshop on Semiconductor Physics. On behalf of the organizing commitee, we welcome and invite all participants to a productive and enjoyable meeting. About BWSP The Brazilian Workshop on Semiconductor Physics is a biannual workshop that aims gathering the semiconductor physics community to a series of lectures on the most important and timely topics in the field. In this edition we will continue to cover a broad range of topics such as graphene, wide- and narrowgap semiconductors, low-dimensional systems, quantum information, spin manipulation, organic and biological related semiconductors, among other traditional topics in semiconductor physics. Moreover, we will include a section for quantum Hall effect and topological materials. After the last edition held in the state of São Paulo, BWSP returns to the state of Minas Gerais and will take place in the city of Uberlândia. Uberlândia is located in the southwest of the state, a region called Triângulo Mineiro. The Triângulo Mineiro is well known for its rich agriculture, meat production and packing. Apparently, the name “Uberlândia” has its origin from a Latin word for fertile land, referencing to its agricultural vocation. With a population of about 700,000 people, Uberlândia has the second largest population and one of the best infrastructures of the state. In this edition, BWSP will be organized by professors from the Institute of Physics of the Federal University of Uberlândia (UFU). UFU is a public institution with about 30,000 students, offering bachelor, master, and doctoral degrees in a wide range of subject areas. The mission of the university is: to create and disseminate knowledge, science, technology, innovation, arts and culture into society through a public, free education; to improve the quality of life through sustainable development, to foster ethical, democratic values and improve social insertion. The scientific program of the 17th BWSP will cover the following topics: ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ Topological Insulators, Topological Superconductors and Majorana Fermions Graphene and carbon-based materials Spintronics and spin-related phenomena Low-dimensional structures: electronic structure and transport properties Semiconductor spintronics, spin manipulation and magnetic semiconductors Organic semiconductors systems and biological related semiconductor physics Quantum information via Nuclear Magnetic Resonance Quantum Hall Effects Nanostructure fabrication techniques Nanophotonics and quantum optics using semiconductors Wide- and Narrow-Gap semiconductors The program includes invited talks, tutorials, contributed talks on the frontier of the research topics above, and panel presentation for all participants. Following the format set since the 13 th BWSP, on the opening day there will be a tutorial section. Acknowledgments and Sponsors Organizing Committee Edson Vernek (UFU) — Chair Fabrício Macedo de Souza (UFU) Tomé Mauro Schmidt (UFU) Gerson J. Ferreira (UFU) National Committee Virgilio de Carvalho dos Anjos (UFJF) Jordan Del Nero (UFPA) Antonio C. F. Seridônio (UNESP) Luis Dias da Silva (USP-SP) Program Committee Guilherme Sipahi (USP-São Carlos) J. Carlos Egues (USP-São Carlos) Ado Jorio de Vasconcelos (UFMG) Caio Lewenkopf (UFF) Jose Roberto Iglesias (UFRGS) Rodrigo Capaz (UFRJ) Antonio Gomes Souza Filho (UFC) Alexandre Reily Rocha (UNESP-SP) Sergio Ulloa (Ohio University) Andrea Latgé (UFF) Antonio José Roque Silva (LNLS) SUNDAY 8:30 8:55 9:20 MONDAY TUESDAY WEDNESDAY THURSDAY Opening Andrei Bernevig Alberta Bonanni Mônica A. Cotta Tutorials Luis Foa Torres Diogo O. Soares Pinto Coffee break Luis G. G. V. Dias da Silva Enrique V. Anda Coffee break Alessandra dos Saltos Silva Coffee break Flávio Campopiano Dias de Moraes Bárbara Luiza Teixeira Rosa Horácio W. Leite Alves Coffee break Mircea Guina Luiz Gustavo Cançado Ewelina Hankiewicz Eduardo R. Azevêdo Benedikt Scharf Eva Andrei José Maria Villas Bôas Sukarno Olavo Ferreira Pedro Orellana Alexandre Levine Paulo Eduardo Faria Junior Mariama R. de Sousa Dias Alisson Ronieri Cadore Closing Lunch Lunch Lunch Lunch Lunch Klaus Ensslin 9:45 10:10 10:35 11:00 11:25 11:50 12:15 12:40 13:05 13:30 13:55 14:20 14:45 15:10 15:35 Luiz Gustavo Cançado 16:00 16:25 Coffee break 16:50 Luis G. G. V. Dias da 17:15 Silva 17:40 18:05 18:30 Eduardo R. Azevêdo 18:55 19:20 19:45 20:10 FRIDAY Andrea Latge Fernando Gonzalez-Zalba Fanyao Qu Saimon F. C. da Silva Coffee break Andrei Bernevig Jeffrey Neaton Nancy Sandler Stephen Patrick Walborn Guilherme Matos Sipahi Coffee break Raphael L. M. Lobato David A. Ruiz-Tijerina Andre Henriques Felix G. G. Hernandez Coffee break Poliana Heiffig Penteado Ted Silva Santana Erasmo A. de Andrada e Silva Christoph F. Deneke Coffee break Jiyong Fu Leandro R. F. Lima Rodrigo de Paula A. Lima Poster Poster Free Poster Dinner Invited Talks Contributed Talks BWSP 17 - Tutorials Tutorials Sunday – Afternoon Luiz Gustavo Cançado – UFMG, Brazil Raman characterization of nano–carbon systems Luis G. G. V. Dias da Silva – IF–USP, Brazil Many body physics with semiconductor quantum dots Eduardo R. Azevêdo – IFSC–USP, Brazil NMR principles and spin manipulation for quantum information processing Tuesday – Afternoon Andrei Bernevig – Princeton, USA Topological Insulators 5 BWSP 17 - Invited Invited Talks Monday – Morning Klaus Ensslin – ETH Zurich, Switzerland Spin–correlation in a quantum dot strongly coupled to a fermionic cavity Mircea Guina – Tampere University of Technology, Finland Physics, technology, and applications of III-Bi/N-V heterostructures Eva Andrei – Rutgers University, USA Charging vacancies in graphene: from neutral to supercritical Monday – Afternoon Jeffrey Neaton – Berkeley, USA Carrier Transport and Energy Conversion at the Nanoscale from First Principles Tuesday – Morning Andrei Bernevig – Princeton, USA Weyl semimetals Luiz Gustavo Cançado – Universidade Federal de Minas Gerais, Brazil Spatial Coherence In Near–Field Raman Scattering Tuesday – Afternoon Nancy Sandler – Ohio University, USA Graphene Flowers Wednesday – Morning Alberta Bonanni – Johannes Kepler University, Austria Semiconductor III–nitrides beyond LEDs and HEMTs Fernando Gonzalez–Zalba – Hitachi Cambridge Laboratory Donor–based quantum computing in silicon Ewelina Hankiewicz – Wuerzburg University, Germany From Transport in Topological Insulators to the Hybrid Structures: In the Search of Majorana Fermions 6 BWSP 17 - Invited Thursday – Morning Mônica A. Cotta – UNICAMP, Brazil Far–from–equilibrium nanowire growth and applications to biosensing devices Eduardo R. Azevêdo – IFSC/USP, Brazil Nuclear Magnetic Resonance as a tool for molecular characterization and quantum properties of open quantum systems Thursday – Afternoon Stephen Patrick Walborn – Johannes Kepler University, Austria Experimental investigation of Multipartite Entanglement with Photon Pairs Friday – Morning Luis Foa Torres – Universidad Nacional de Córdoba, Argentina The road towards Floquet topological states: Using light as a topological switch Benedikt Scharf – University at Buffalo, USA Probing topological states and transitions in systems of reduced dimensionality 7 BWSP 17 – Contributed Talks Contributed Talks Monday – Morning Diogo de Oliveira Soares Pinto – IFSC – USP Quantum speed limit from information geometry Monday – Afternoon Guilherme Matos Sipahi – Universidade de São Paulo Interband polarized absorption in InP polytypical superlattices Raphael Longuinhos Monteiro Lobato – UFLA Theoretical Chemistry of alpha–Graphyne: Functionalization, Symmetry Breaking and Generation of Dirac–Fermions Mass David A. Ruiz–Tijerina – Universidade de São Paulo Interplay between Majorana and Kondo physics in an interacting quantum dot coupled to a topological quantum wire Andre Henriques – USP Triplet state spin coherence generation in singly–charged quantum dot ensembles by picosecond light pulses Tuesday – Morning Andrea Latge – Universidade Federal Fluminense Symmetries of quantum transport with Rashba spin–orbit: Graphene spintronics Luis Gregorio G. V. Dias da Silva – Instituto de Física – USP Magnetic Noise From Kondo Traps Enrique Victoriano Anda – Dpto de Física, PUC–Rio A Kondo Two Dots Spin–Filter Device José Maria Villas Bôas – Universidade Federal de Uberlândia Empty Cavity As A Tool To Investigate Light–Matter Interactions In Quantum Dot–Cavity Systems Sukarno Olavo Ferreira – UFV Evaluation of CdTe thin films grown on Si(001) and on flexible Kapton substrates 8 BWSP 17 – Contributed Talks Tuesday – Afternoon Felix G. G. Hernandez – IF–USP Resonant Control Of The Current–Induced Spin Polarization In A Two–Dimensional Electron System Poliana Heiffig Penteado – IFSC/USP Crossed Persistent Spin Helices Ted Silva Santana – Heriot–Watt University Efficient extraction of indistinguishable photons from a quantum dot in a noisy environment Erasmo A. de Andrada e Silva – INPE Helical interface modes in IV–VI inverted–gap semiconductor asymmetric QWs Wednesday – Morning Alessandra dos Saltos Silva – UFU Diluted magnetic semiconductors in glass Pedro Orellana – Universidad Técnica Federico Santa Maria Bound states in the continuum with Dirac–like fermions Alexandre Levine – IFUSP Persistence of a Two–Dimensional Topological Insulator State in Wide HgTe Quantum Wells Thursday – Morning Flávio Campopiano Dias de Moraes – USP Temperature Dependence of the Light Induced Magnetic Moment in EuTe Bárbara Luiza Teixeira Rosa – UFMG Observation of emission enhancement caused by symmetric carrier depletion in III–V nanomembrane heterostructures Horácio Wagner Leite Alves – UFSJ SnO2/TiO2 (001) And (110) Superlattices: A Theoretical Study Of Their Electronic And Dielectric Properties Paulo Eduardo Faria Junior – Universidade de São Paulo Microscopic description of spin–lasers: from spin–dependent gain to high frequency operation Mariama Rebello de Sousa Dias – Universidade Federal de São Carlos Dresselhaus spin–orbit interaction effects on transport properties of polytypic nanowires Thursday – Afternoon 9 BWSP 17 – Contributed Talks Christoph F. Deneke – LNNano/CNPEM Graphene/hBN plasmon–phonon coupling investigated by lateral resolved infrared spectroscopy Jiyong Fu – Physics institute of Sao Carlos, University of Sao Paulo Spin–orbit interaction in GaAs wells: From one to two subbands Leandro Romão Fernandes Lima – Universidade Federal Fluminense Current densities in the quantum spin Hall state due to the presence of adatoms in graphene Rodrigo de Paula Almeida Lima – UFAL Thermoelectric properties and the violation of Wiedemann–Franz law in quantum dots Friday – Morning Fanyao Qu – University of Brasilia Topological quantum phase transitions in strained graphene Saimon Filipe Covre da Silva – UFV/LNNano Ingaas Nanomembranes Explored As Substrates For III–V Growth Alisson Ronieri Cadore – Universidade Federal de Minas Gerias Asymmetric modulation of the graphene devices resistivity under H2 exposure 10 BWSP 17 – Posters Posters Posters: Monday 1) Bruno Max de Souza Melo – UFF Strained and corrugated graphene: band structure and band gap 2) Marcio Peron Franco de Godoy – UFSCar Correlation between phase transition and magnetic properties of Nb2O5 3) Armando Arquimedes Pezo Lopez – IFT-UNESP Spin Splitting in Semiconductor Heterostructures 4) Yuri Policei Marques – UNESP Catching the Bound States in the Continuum of a Phantom Atom in Graphene 5) Dominike Pacine de Andrade – Universidade Federal de Uberlândia Electronic Structure And Magnetic Properties Of Inas Surface Covered Of Infinite And Finite Transition Metal Chains (Fe, Co And Mn) 6) Enrique Munoz – Pontificia Universidad Catolica de Chile Non-equilibrium transport in strongly-correlated nanostructures 7) Patrícia Aparecida Almeida de Oliveira – Federal University of Uberlândia Bell States And Entanglement Dynamics On Two Coupled Quantum Molecules 8) Giorgio Ernesto Testoni – ITA Multilayer Thin Films Of Al2O3-TiO2 Grown By Atomic Layer Deposition 9) Guilherme Aluizio Steffens Lorenset – Universidade Federal de Santa Maria Lattice Thermal Conductivity Of PbTe Nanostructures By Molecular Dynamics 10) Yara Galvão Gobato – UFSCAR Effects of thermal annealing on optical and spin properties of dilute nitride quantum wells 11) Julio César Bolaños Pomayna – Instituto de Física da Universidade de São Paulo Mis Oscillations And Geometrical Resonance Peaks Of A Wide Quantum Well In An Electrically Tuned Triangular Antidot Lattice 12) Dimy Nanclares Fernandes Sanches – Universidade de São Paulo Spectrum And Transport Properties Of HgTe/CdTe Quantum Wells In The Quantum Spin Hall Regime 13) Thiago Gomes da Silva – Universidade Federal do Paraná Microcomputed tomography analysis of self assembled ZnO dendritic structures 14) Felipe David Crasto de Lima – Universidade Federal de Uberlândia Transition metals adsorbed in graphene grain boundaries 11 BWSP 17 – Posters 15) Luis Alberto Torres Quispe – UFSC Modeling the Influence of Temperature on the Thickness of Electrodeposited Ni(OH)2 Thin Films 16) Victor Lopes da Silva – PUC-Rio Effects of many-body physics: a Projector Operator solution 17) Luiz Henrique Bugatti Guessi – UNESP Effect of Inter-Adatoms Correlations on the Local Density of States of Graphene 18) Andre Luis Rossi Melzi – UFSCar Electrical Resistivity in Percolating Networks of Semiconducting Nanowires 19) Bruno Henrique Bononi dos Santos – UFSCar Carrier localization and Spin e?ects in GaBiAs layers 20) Virgilio de Carvalho dos Anjos – UFJF Coherent Heat Transport in Phononic Crystal at Low Temperatures 21) Daniel Neves Micha – CEFET/RJ Study on the growth parameters of InAs quantum dots on (Al)GaAs for intermediate band solar cells 22) Ana Champi – UFABC Electronic behavior of FLGFETs devices by back-gate applied 23) Daniel Alejandro Solis Lerma – Unicamp Localization properties of graphene Landau levels: The role of edge states 24) Tiago de Campos – Universidade de São Paulo Optical trends in InP polytypic superlattices 25) Carlos Maciel de Oliveira Bastos – Instituto de Física de São Carlos - USP New algorithm to obtain the k.p parameters from band-structure calculations: The example of GaAs 26) Luciano Henrique Siliano Ricco – UNESP Probing the Antisymmetric Fano Interference Assisted by a Majorana Fermion 27) Vladimir Roger Miranda La Hera – IFGW-UNICAMP Optical emissions from InAsP/InP heterostructure nanowires 28) Hanay Kamimura – UFSCar A Raman study of InP nanowires 29) Alysson Ferreira Morais – IFUSP Indução De Magnetização Pela Incidência Da Luz: Polarons Em Eute À Temperaturas Finitas 30) Marco Antonio Tito Patricio – insituto de Física de São Carlos , universidade de São Paulo Study Of Interminiband Charge Transfer In Quantizing Magnetic Field In InGaAs/InP Superlattices 12 BWSP 17 – Posters 31) Luana Santos Araujo – UFSCar Capacitance-Voltage measurements of CVD boron doped diamond after plasma treatment Posters: Tuesday 32) Ginetom Souza Diniz – UDF Spin-Charge Transport in Graphene Nanoribbon Devices under Spatially Modulated Rashba Field 33) Vivaldo Lopes Oliveira Neto – Federal University of São Carlos Geometric Berry phase in tilted Rashba quantum rings 34) Fanyao Qu – University of Brasilia The character of exciton in monolayer MoS2 35) Vânia Aparecida da Costa – INPE Two-band model for thermoelectric transport in IV-VI semiconductor compounds 36) Marcio Peron Franco de Godoy – UFSCar Study of Polycrystalline ZnO obtained by dripping method 37) Miguel Angel Gonzalez Balanta – UFSCAR Optical manipulation of the spin from Mn ions in a In-GaAs/GaAs/ Mn structure 38) Jenaina Ribeiro Soares – Universidade Federal de Lavras Group theory for two-dimensional phosphorene systems and transition metal dichalcogenides: lattice vibrations and structural analysis 39) Horácio Wagner Leite Alves – UFSJ Vibrational And Dielectric Properties Of PbSnTe Alloys By First-Principles Calculations 40) Miraci Silva Costa – Universidade Federal do Pará Majorana fermions detection system with a quantum dot coupled to a chain Kitaev 41) Ana Champi – UFABC The role of the thermal reduction in the chemical process to obtain graphene oxides. 42) Marcelos Lima Peres – Universidade Federal de Itajubá Electrical transport measurements on Bi2Te3 topological insulator 43) Alexandre De Souza Oliveira – UFPA 1-D Molecular System: Electronic Transport Of Conjugated Carbon Chains Connected To Structural Gold Electrodes 44) Vanbasten Fernandes Silva – UFU Estudo Das Propriedades Energéticas, Estruturais E Eletrônicas Da Adsorção De Au Em Siliceno Com Defeitos Estruturais 13 BWSP 17 – Posters 45) Douglas Marcel Gonçalves Leite – ITA Ellipsometric studies in high textured nanocrystalline AlN films 46) Marcelo Alejandro Toloza Sandoval – Instituto Nacional de Pesquisas Espaciais Effective G-Factor And Its Anisotropy For Electrons In III-V Semiconductor QWs 47) Ta-Ryeong Park – Hoseo University Charge transfer between vibrating pairs in InxAl1-xAs 48) Saeed Ullah – University of Sao Paulo (USP) Long-lived spin coherence in double and triple quantum wells 49) Yuri Policei Marques – UNESP Catching The Bound States In The Continuum Of A Phantom Atom In Graphene 50) Danilo Roque Huanca – Universidade Federal de Itajubá Optical Properties Of Porous Silicon Photonic Crystal With Graded Effective Refractive Index In Depth 51) Augusto M. Alcalde – UFU Tunneling induced transparency in coupled quantum dots: role of exchange interaction 52) Henrique Limborço – UFMG Growth Of CuInSe2 Nanostructures By MBE 53) Marcelo Zoega Maialle – Faculdade de Ciências Aplicadas - Unicamp - Limeira Simulation Of Harmonic Effects On Electrically Driven Spin Resonance 54) Erika Nascimento Lima – UFMG Edge States Of Topological Bi(111) Nanoribbons: An Ab Initio Study 55) Roberto Jakomin – UFRJ InAs quantum dot formation on GaAs for optimization of intermediate band solar cells 56) Marcel Santos Claro – Universidade de São Paulo Computational method for the calculation of stationary and dynamic quantum states in tridimensional heterostructures with arbitrary shape and composition 57) Yina Julieth Onofre Ramirez – Universidade Federal de São Carlos UFSCar Study Of Polycrystalline Zno Obtained By Dripping Method 58) Luís Antônio Cabral – Federal University of São Carlos Mn-enhanced collective emisson of quantum dots 59) Riama Coelho Gouveia – IFSP Phonon Localization in Germanium Nanowires Grown from Ni Nanoparticles 14 BWSP 17 – Posters 60) Horácio Wagner Leite Alves – UFSJ Electronic Properties Of Bulk Hgte And HgTe/CdTe (001) Superlattices By First-Principles Calculations 61) Rudy Massami Sakamoto Kawabata – PUC-Rio Process calibration of HSQ mask for selective area growth (SAG) of InAs/GaAs QD-in-NW for single photon emitters 62) Vanessa Orsi Gordo – UFSCar Spin Effects Of (InGa)As Quantum Rings Inserted Into Resonant Tunneling Diodes Posters: Thursday 63) Marcos Sergio Figueira da Silva – Universidade Federal Fluminense X-boson cumulant approach to the topological Kondo insulators 64) Edwin Ramos Rodríguez – Universidade Federal Fluminense X-boson cumulant approach to the multiplet level systems: study of the first order transition when J=5/2 65) Thiago Gomes da Silva – Universidade Federal do Paraná Structural and optical properties of nanocristalline CeO2 films obtained by precipitation technique 66) Alexandre Cavalheiro Dias – UnB Spin-orbit coupling dependent valley polarization in graphene dot and antidot 67) Moises Porfirio Rojas Leyva – UFLA Quantum teleportation via Ising-XXZ diamond chain structure 68) Igor Saulo Santos de Oliveira – UFLA Pyridine intercalation in Bi2Se3 topological insulator 69) Carlos Alberto Leon Chinchay – UFF Electronic properties of h-BN embedded graphene zigzag nanoribbons 70) Maryzaura de Oliveira Assunção – UFU Influence of Crossed Andreev Reflection in the Dynamics of a Double Quantum DotSuperconductor System 71) Antonio Carlos Ferreira Seridonio – UNESP Spin-dependent beating patterns in thermoelectric properties: filtering the carriers of the heat flux in a Kondo adatom system 72) Emilia Ridolfi – uff Effective Tight-Binding Hamiltonian for a monolayer of molybdenum disulphide 15 BWSP 17 – Posters 73) Luis Ismael Asmat López – UFSC Partial pseudospin polarization, latticetronics and Fano resonances in quantum dots based in graphene ribbons: a conductance spectroscopy 74) Leonardo Kleber Castelano – UFSCar Singlet-Triplet Qubits In Quantum Dots 75) Johnni Xavier Padilha – UFSCar Effects of tilted magnetic fields on the electronic structure of semiconductor heterostructures 76) Daiara Fernandes de Faria – UFF Local sublattice symmetry breaking for graphene with a centrosymmetric deformation 77) Carlos José Páez Gonzalez – FCA-Unicamp Layer and Sublattice pseudospin in biased bilayer graphene 78) Diego Ferreira Carneiro – Centro federal de Educação tecnológica de minas gerais Resonant magnetotuneling through an heterostructure composed of GaAs / AlGaAs 79) Evaldo Ribeiro – Universidade Federal do Paraná Enhancement Of Photovoltaic Organic Device Performance By Using Si Nanoparticles 80) Antonio Thiago Madeira Beirão – Universidade Federal do Pará Detecting Zero Mode In Kitaev Chain Coupled In A Quantum-Dot. 81) Fernando Massa Fernandes – Universidade de São Paulo Noise in superlattice quantum-well infrared photodetectors 82) Sabrina Lara dos Reis – UFSCar Study of Polycrystalline ZnO obtained by dripping method 83) Augusto de Lelis Araújo – Universidade Federal de Uberlândia - UFU Confinement Effects on IV-VI Topological Crystalline Insulators 84) Jessica Edith Quispe Bautista – Instituto de Física - Universidade Federal de Alagoas Conductance of interactive electrons in a quantum dot with Fano-Rashba effect 85) Walber Hugo de Brito – Departamento de Física, Universidade Federal de Minas Gerais Stability and Electronic Properties of graphene-like Carbon Nitride Structures 86) Fanyao Qu – University of Brasilia New character of molecular ground state in manganese-doped quantum dot molecules 87) Pedro Henrique Pereira – Universidade Federal de São Carlos Spin polarized photocurrent generation in heterostructures doped with magnetic impurities 16 BWSP 17 – Posters 88) Walter Andrade de Freitas – UFU Topological States In Confined Bi2Se3/AlN Heterostructure 89) Tharnier Puel de Oliveira – CBPF Unconventional Superconductivity And Hybridization In A Two-Band 1D Chain 90) Mariana Mieko Odashima – Universidade Federal Fluminense Time-dependent quantum transport in a resonant tunneling system: partitioned vs partition-free approaches 91) Cesar Enrique Perez Villegas – Instituto de Física Teórica - UNESP Excitonic Effects On The Optical Properties Of MoTe2/InN Heterostructures For Photovoltaic Applications 92) Alexis Ricardo Hernández Nunez – UFRJ Finite difference method for transport of two-dimensional massless Dirac fermions in a ribbon geometry 93) Daniel Neves Micha – CEFET/RJ Solar cells with very reflective back side: photon recycling effect and internal quantum efficiency new features 94) Carlos Augusto Mera Acosta – University of Sao Paulo Dirac Fermions Without Bulk Backscattering In Rhombohedral Topological Insulators 95) Pablo M. Perez-Piskunow – Universidad Nacional de Córdoba Hierarchy of Floquet chiral edge states in graphene 17