Shifted Landau ladders and low field magneto-oscillations in high-mobility GaAs 2D hole systems

Po Zhang; Jianli Wang; Chi Zhang; Rui Rui Du; L. N. Pfeiffer; K. W. West

doi:10.1063/1.4978673

Shifted Landau ladders and low field magneto-oscillations in high-mobility GaAs 2D hole systems

Po Zhang, Jianli Wang, Chi Zhang, Rui Rui Du, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

Abstract

We present well-developed low-field magneto-resistance oscillations originating from zero-field spin splitting (ZFSS) of heavy holes in high mobility GaAs/AlGaAs quantum wells. This low field oscillation is 1/B-periodic and emerges before the onset of Shubnikov-de Haas oscillations. The effect can be explained by resonant scattering between two Landau ladders shifted by the ZFSS gap, which in turn can be measured by comparing with the hole cyclotron energy. A front gate is fabricated to tune the ZFSS and hence the oscillation period.

Original language	English (US)
Article number	112103
Journal	Applied Physics Letters
Volume	110
Issue number	11
DOIs	https://doi.org/10.1063/1.4978673
State	Published - Mar 13 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4978673

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title = "Shifted Landau ladders and low field magneto-oscillations in high-mobility GaAs 2D hole systems",

abstract = "We present well-developed low-field magneto-resistance oscillations originating from zero-field spin splitting (ZFSS) of heavy holes in high mobility GaAs/AlGaAs quantum wells. This low field oscillation is 1/B-periodic and emerges before the onset of Shubnikov-de Haas oscillations. The effect can be explained by resonant scattering between two Landau ladders shifted by the ZFSS gap, which in turn can be measured by comparing with the hole cyclotron energy. A front gate is fabricated to tune the ZFSS and hence the oscillation period.",

author = "Po Zhang and Jianli Wang and Chi Zhang and Du, {Rui Rui} and Pfeiffer, {L. N.} and West, {K. W.}",

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doi = "10.1063/1.4978673",

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T1 - Shifted Landau ladders and low field magneto-oscillations in high-mobility GaAs 2D hole systems

AU - Zhang, Po

AU - Wang, Jianli

AU - Zhang, Chi

AU - Du, Rui Rui

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2017/3/13

Y1 - 2017/3/13

N2 - We present well-developed low-field magneto-resistance oscillations originating from zero-field spin splitting (ZFSS) of heavy holes in high mobility GaAs/AlGaAs quantum wells. This low field oscillation is 1/B-periodic and emerges before the onset of Shubnikov-de Haas oscillations. The effect can be explained by resonant scattering between two Landau ladders shifted by the ZFSS gap, which in turn can be measured by comparing with the hole cyclotron energy. A front gate is fabricated to tune the ZFSS and hence the oscillation period.

AB - We present well-developed low-field magneto-resistance oscillations originating from zero-field spin splitting (ZFSS) of heavy holes in high mobility GaAs/AlGaAs quantum wells. This low field oscillation is 1/B-periodic and emerges before the onset of Shubnikov-de Haas oscillations. The effect can be explained by resonant scattering between two Landau ladders shifted by the ZFSS gap, which in turn can be measured by comparing with the hole cyclotron energy. A front gate is fabricated to tune the ZFSS and hence the oscillation period.

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JF - Applied Physics Letters

IS - 11

M1 - 112103

ER -

Shifted Landau ladders and low field magneto-oscillations in high-mobility GaAs 2D hole systems

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