Unconventional Hall effect near charge neutrality point in a two-dimensional electron-hole system
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
14/10/2013
14/10/2013
2012
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| Resumo |
The transport properties of the two-dimensional system in HgTe-based quantum wells containing simultaneously electrons and holes of low densities are examined. The Hall resistance, as a function of perpendicular magnetic field, reveals an unconventional behavior, different from the classical N-shaped dependence typical for bipolar systems with electron-hole asymmetry. The quantum features of magnetotransport are explained by means of numerical calculation of the Landau level spectrum based on the Kane Hamiltonian. The origin of the quantum Hall plateau sigma(xy) = 0 near the charge neutrality point is attributed to special features of Landau quantization in our system. FAPESP FAPESP CNPq CNPq RFBI RFBI RAS RAS RFBR [12-02-00054-a] RFBR |
| Identificador |
PHYSICAL REVIEW B, COLLEGE PK, v. 86, n. 15, supl. 1, Part 6, pp. E705-E709, OCT 26, 2012 1098-0121 http://www.producao.usp.br/handle/BDPI/35053 10.1103/PhysRevB.86.155320 |
| Idioma(s) |
eng |
| Publicador |
AMER PHYSICAL SOC COLLEGE PK |
| Relação |
PHYSICAL REVIEW B |
| Direitos |
openAccess Copyright AMER PHYSICAL SOC |
| Palavras-Chave | #GRAPHENE #HETEROJUNCTIONS #PHYSICS, CONDENSED MATTER |
| Tipo |
article original article publishedVersion |
