Nonlocal Transport Near Charge Neutrality Point in a Two-Dimensional Electron-Hole System
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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| Data(s) |
21/10/2013
21/10/2013
2012
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| Resumo |
Nonlocal resistance is studied in a two-dimensional system with a simultaneous presence of electrons and holes in a 20 nm HgTe quantum well. A large nonlocal electric response is found near the charge neutrality point in the presence of a perpendicular magnetic field. We attribute the observed nonlocality to the edge state transport via counterpropagating chiral modes similar to the quantum spin Hall effect at a zero magnetic field and graphene near a Landau filling factor nu = 0. FAPESP FAPESP CNPq CNPq RFBI [N12-02-00054-a, 11-02-12142-ofi-m] RFBI RAS RAS |
| Identificador |
PHYSICAL REVIEW LETTERS, COLLEGE PK, v. 108, n. 22, supl. 1, Part 1, pp. 264-272, MAY 31, 2012 0031-9007 http://www.producao.usp.br/handle/BDPI/35263 10.1103/PhysRevLett.108.226804 |
| Idioma(s) |
eng |
| Publicador |
AMER PHYSICAL SOC COLLEGE PK |
| Relação |
PHYSICAL REVIEW LETTERS |
| Direitos |
openAccess Copyright AMER PHYSICAL SOC |
| Palavras-Chave | #HGTE QUANTUM-WELLS #TOPOLOGICAL INSULATORS #CONDUCTANCE #STATE #PHYSICS, MULTIDISCIPLINARY |
| Tipo |
article original article publishedVersion |
