Magnetic breakdown and Landau level spectra of a tunable double-quantum-well Fermi surface

J. A. Simmons; N. E. Harff; S. K. Lyo; G. S. Boebinger; J. F. Klem; L. N. Pfeiffer; K. W. West

doi:10.1016/S0921-4526(98)00328-7

Magnetic breakdown and Landau level spectra of a tunable double-quantum-well Fermi surface

J. A. Simmons, N. E. Harff, S. K. Lyo, G. S. Boebinger, J. F. Klem, L. N. Pfeiffer, K. W. West

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

Abstract

By measuring longitudinal resistance, we map the Landau level spectra of double quantum wells as a function of both parallel (B_∥) and perpendicular (B_⊥) magnetic fields. In this continuously tunable highly non-parabolic system, the cyclotron masses of the two Fermi surface orbits change in opposite directions with B_∥. This causes the two corresponding ladders of Landau levels formed at finite B_⊥ to exhibit multiple crossings. We also observe a third set of Landau levels, independent of B_∥, which arise from magnetic breakdown of the Fermi surface. Both semiclassical and full-quantum mechanical calculations show good agreement with the data.

Original language	English (US)
Pages (from-to)	845-849
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	249-251
DOIs	https://doi.org/10.1016/S0921-4526(98)00328-7
State	Published - Jun 17 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Double-quantum well
Fermi surface
Landau level
Magnetotransport

Access to Document

10.1016/S0921-4526(98)00328-7

Cite this

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title = "Magnetic breakdown and Landau level spectra of a tunable double-quantum-well Fermi surface",

abstract = "By measuring longitudinal resistance, we map the Landau level spectra of double quantum wells as a function of both parallel (B∥) and perpendicular (B⊥) magnetic fields. In this continuously tunable highly non-parabolic system, the cyclotron masses of the two Fermi surface orbits change in opposite directions with B∥. This causes the two corresponding ladders of Landau levels formed at finite B⊥ to exhibit multiple crossings. We also observe a third set of Landau levels, independent of B∥, which arise from magnetic breakdown of the Fermi surface. Both semiclassical and full-quantum mechanical calculations show good agreement with the data.",

keywords = "Double-quantum well, Fermi surface, Landau level, Magnetotransport",

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TY - JOUR

T1 - Magnetic breakdown and Landau level spectra of a tunable double-quantum-well Fermi surface

AU - Simmons, J. A.

AU - Harff, N. E.

AU - Lyo, S. K.

AU - Boebinger, G. S.

AU - Klem, J. F.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1998/6/17

Y1 - 1998/6/17

N2 - By measuring longitudinal resistance, we map the Landau level spectra of double quantum wells as a function of both parallel (B∥) and perpendicular (B⊥) magnetic fields. In this continuously tunable highly non-parabolic system, the cyclotron masses of the two Fermi surface orbits change in opposite directions with B∥. This causes the two corresponding ladders of Landau levels formed at finite B⊥ to exhibit multiple crossings. We also observe a third set of Landau levels, independent of B∥, which arise from magnetic breakdown of the Fermi surface. Both semiclassical and full-quantum mechanical calculations show good agreement with the data.

AB - By measuring longitudinal resistance, we map the Landau level spectra of double quantum wells as a function of both parallel (B∥) and perpendicular (B⊥) magnetic fields. In this continuously tunable highly non-parabolic system, the cyclotron masses of the two Fermi surface orbits change in opposite directions with B∥. This causes the two corresponding ladders of Landau levels formed at finite B⊥ to exhibit multiple crossings. We also observe a third set of Landau levels, independent of B∥, which arise from magnetic breakdown of the Fermi surface. Both semiclassical and full-quantum mechanical calculations show good agreement with the data.

KW - Double-quantum well

KW - Fermi surface

KW - Landau level

KW - Magnetotransport

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Magnetic breakdown and Landau level spectra of a tunable double-quantum-well Fermi surface

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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