Quantum Hall stripes in high-density GaAs/AlGaAs quantum wells

X. Fu, Q. Shi, M. A. Zudov, Y. J. Chung, K. W. Baldwin, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticle

Abstract

We report on quantum Hall stripes (QHSs) formed in higher Landau levels of GaAs/AlGaAs quantum wells with high carrier density (ne>4×1011cm-2) which is expected to favor QHS orientation along the unconventional 110 crystal axis and along the in-plane magnetic field B. Surprisingly, we find that at B=0 QHSs in our samples are aligned along the 110 direction and can be reoriented only perpendicular to B. These findings suggest that high density alone is not a decisive factor for either abnormal native QHS orientation or alignment with respect to B, while quantum confinement of the 2DEG likely plays an important role.

Original languageEnglish (US)
Article number205418
JournalPhysical Review B
Volume98
Issue number20
DOIs
StatePublished - Nov 26 2018

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Quantum confinement
Two dimensional electron gas
Crystal orientation
Semiconductor quantum wells
Carrier concentration
aluminum gallium arsenides
quantum wells
Magnetic fields
Crystals
alignment
magnetic fields
crystals
Direction compound
gallium arsenide

Cite this

Fu, X., Shi, Q., Zudov, M. A., Chung, Y. J., Baldwin, K. W., Pfeiffer, L. N., & West, K. W. (2018). Quantum Hall stripes in high-density GaAs/AlGaAs quantum wells. Physical Review B, 98(20), [205418]. https://doi.org/10.1103/PhysRevB.98.205418

Quantum Hall stripes in high-density GaAs/AlGaAs quantum wells. / Fu, X.; Shi, Q.; Zudov, M. A.; Chung, Y. J.; Baldwin, K. W.; Pfeiffer, L. N.; West, K. W.

In: Physical Review B, Vol. 98, No. 20, 205418, 26.11.2018.

Research output: Contribution to journalArticle

Fu, X, Shi, Q, Zudov, MA, Chung, YJ, Baldwin, KW, Pfeiffer, LN & West, KW 2018, 'Quantum Hall stripes in high-density GaAs/AlGaAs quantum wells', Physical Review B, vol. 98, no. 20, 205418. https://doi.org/10.1103/PhysRevB.98.205418
Fu, X. ; Shi, Q. ; Zudov, M. A. ; Chung, Y. J. ; Baldwin, K. W. ; Pfeiffer, L. N. ; West, K. W. / Quantum Hall stripes in high-density GaAs/AlGaAs quantum wells. In: Physical Review B. 2018 ; Vol. 98, No. 20.
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