Two- and three-electron bubbles in AlxGa1-xAs / Al0.24Ga0.76As quantum wells

X. Fu; Q. Shi; Michael Zudov; G. C. Gardner; J. D. Watson; M. J. Manfra

doi:10.1103/PhysRevB.99.161402

Two- and three-electron bubbles in AlxGa1-xAs / Al0.24Ga0.76As quantum wells

X. Fu, Q. Shi, Michael Zudov, G. C. Gardner, J. D. Watson, M. J. Manfra

Physics and Astronomy (Twin Cities)

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

12 Scopus citations

Abstract

We report on transport signatures of eight distinct bubble phases in the N=3 Landau level of an AlxGa1-xAs/Al0.24Ga0.76As quantum well with x=0.0015. These phases occur near partial filling factors ν≈0.2(0.8) and ν≈0.3(0.7) and have M=2 and M=3 electrons (holes) per bubble, respectively. We speculate that a small amount of alloy disorder in our sample helps to distinguish these broken symmetry states in low-temperature transport measurements.

Original language	English (US)
Article number	161402
Journal	Physical Review B
Volume	99
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.99.161402
State	Published - Apr 3 2019

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© 2019 American Physical Society.

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title = "Two- and three-electron bubbles in AlxGa1-xAs / Al0.24Ga0.76As quantum wells",

abstract = "We report on transport signatures of eight distinct bubble phases in the N=3 Landau level of an AlxGa1-xAs/Al0.24Ga0.76As quantum well with x=0.0015. These phases occur near partial filling factors ν≈0.2(0.8) and ν≈0.3(0.7) and have M=2 and M=3 electrons (holes) per bubble, respectively. We speculate that a small amount of alloy disorder in our sample helps to distinguish these broken symmetry states in low-temperature transport measurements.",

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AU - Shi, Q.

AU - Zudov, Michael

AU - Gardner, G. C.

AU - Watson, J. D.

AU - Manfra, M. J.

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N2 - We report on transport signatures of eight distinct bubble phases in the N=3 Landau level of an AlxGa1-xAs/Al0.24Ga0.76As quantum well with x=0.0015. These phases occur near partial filling factors ν≈0.2(0.8) and ν≈0.3(0.7) and have M=2 and M=3 electrons (holes) per bubble, respectively. We speculate that a small amount of alloy disorder in our sample helps to distinguish these broken symmetry states in low-temperature transport measurements.

AB - We report on transport signatures of eight distinct bubble phases in the N=3 Landau level of an AlxGa1-xAs/Al0.24Ga0.76As quantum well with x=0.0015. These phases occur near partial filling factors ν≈0.2(0.8) and ν≈0.3(0.7) and have M=2 and M=3 electrons (holes) per bubble, respectively. We speculate that a small amount of alloy disorder in our sample helps to distinguish these broken symmetry states in low-temperature transport measurements.

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Two- and three-electron bubbles in AlxGa1-xAs / Al0.24Ga0.76As quantum wells

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