Integer quantum Hall effect in a square lattice revisited
نویسندگان
چکیده
منابع مشابه
The integer quantum Hall effect of a square lattice with an array of point defects.
The electronic properties of a square lattice under an applied perpendicular magnetic field in the presence of impurities or vacancies are investigated by the tight-binding method including up to second nearest neighbor interactions. These imperfections result in new gaps and bands in the Hofstadter butterfly even when the second order interactions break the bipartite symmetry. In addition, the...
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Contrary to common belief, the current emitted by a contact embedded in a two-dimensional electron gas (2DEG) is quantized in the presence of electric and magnetic fields. This observation suggests a simple, clearly defined model for the quantum current through a Hall device that does not invoke disorder or interactions as the cause of the integer quantum Hall effect (QHE), but is based on a pr...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 2012
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2012.03.008