From insulator to quantum Hall liquid at low magnetic fields

Tsai-Yu Huang; C. -T. Liang; Gil-Ho Kim; C. F. Huang; Chao-Ping Huang; Jyun-Ying Lin; Hsi-Sheng Goan; D. A. Ritchie

doi:10.1103/PhysRevB.78.113305

From insulator to quantum Hall liquid at low magnetic fields

Mesoscale and Nanoscale Physics 2008-09-08 v2

Authors: Tsai-Yu Huang , C. -T. Liang , Gil-Ho Kim , C. F. Huang , Chao-Ping Huang , Jyun-Ying Lin , Hsi-Sheng Goan , D. A. Ritchie

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Abstract

We have performed low-temperature transport measurements on a GaAs two-dimensional electron system at low magnetic fields. Multiple temperature-independent points and accompanying oscillations are observed in the longitudinal resistivity between the low-field insulator and the quantum Hall (QH) liquid. Our results support the existence of an intermediate regime, where the amplitudes of magneto-oscillations can be well described by conventional Shubnikov-de Haas theory, between the low-field insulator and QH liquid.

Keywords

quantum hall effect quantum wells

Cite

@article{arxiv.cond-mat/0601490,
  title  = {From insulator to quantum Hall liquid at low magnetic fields},
  author = {Tsai-Yu Huang and C. -T. Liang and Gil-Ho Kim and C. F. Huang and Chao-Ping Huang and Jyun-Ying Lin and Hsi-Sheng Goan and D. A. Ritchie},
  journal= {arXiv preprint arXiv:cond-mat/0601490},
  year   = {2008}
}

Comments

Magneto-oscillations governed by Shubnikov-de Haas theory are observed between the low-field insulator and quantum Hall liquid

From insulator to quantum Hall liquid at low magnetic fields

Abstract

Keywords

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