Quantum-Hall to insulator transition

Дата и время публикации : 1998-08-18T08:56:34Z

Авторы публикации и институты :
H. Potempa (PTB Braunschweig, Germany)
A. Bäker (PTB Braunschweig, Germany)
L. Schweitzer (PTB Braunschweig, Germany)

Ссылка на журнал-издание: Physica B 256-258 (1998) 591-594
Коментарии к cтатье: 5 pages LaTeX2e, 5 ps-figures included. Proceedings SemiMag13, Nijmegen 1998; to appear in Physica B
Первичная категория: cond-mat.dis-nn

Все категории : cond-mat.dis-nn, cond-mat.mes-hall

Краткий обзор статьи: The crossover from the quantum Hall regime to the Hall-insulator is investigated by varying the strength of the diagonal disorder in a 2d tight-binding model. The Hall and longitudinal conductivities and the behavior of the critical states are calculated numerically. We find that with increasing disorder the current carrying states close to the band center disappear first. Simultaneously, the quantized Hall conductivity drops monotonically to zero also from higher quantized values.

Category: Physics