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

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

Journal Article (2019)

Author(s)

X. Fu (University of Minnesota)

Q. Shi (University of Minnesota, Columbia University)

M. A. Zudov (University of Minnesota)

G. C. Gardner (Purdue University)

J. D. Watson (TU Delft - BUS/Quantum Delft, Purdue University)

M. J. Manfra (Purdue University)

DOI related publication

https://doi.org/10.1103/PhysRevB.99.161402 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:b598881a-9288-486d-85c0-547a08e630f8

More Info

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Publication Year

2019

Language

English

Journal title

Physical Review B

Issue number

16

Volume number

99

Article number

161402

Downloads counter

140

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.