Systematic study of nonideal contacts in integer quantum Hall systems
作者： Christoph Uiberacker , Christian Stecher , Josef Oswald
DOI: 10.1103/PHYSREVB.80.235331
关键词:
摘要: In the present paper we investigate influence of contact region on distribution chemical potential in integer quantum Hall samples as well longitudinal and resistance a function magnetic field. First use standard sample geometry analyze length leads where current enters/leaves ratio width to these leads. Furthermore barriers current-injecting measurement arms order simulate nonideal contacts. Second nonlocal with applied gating voltage at metallic For such it has been found experimentally that both field can change significantly. Using nonequilibrium network model are able reproduce most qualitative features experiments.
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128.84.21.199参考文章(39)
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