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|Abstract:||A transport study of two-dimensional (2D) holes confined to wide GaAs quantum wells provides a glimpse of a subtle competition between different many-body phases at a Landau level filling ν=3/2 in tilted magnetic fields. At large tilt angles (θ), an anisotropic, stripe (or nematic) phase replaces the isotropic compressible Fermi sea at ν=3/2 if the quantum well has a symmetric charge distribution. When the charge distribution is made asymmetric, instead of the stripe phase, an even-denominator fractional quantum state appears at ν=3/2 in a range of large θ, and reverts back to a compressible state at even higher θ. We attribute this remarkable evolution to the significant mixing of the excited and ground-state Landau levels of 2D hole systems in tilted fields.|
|Electronic Publication Date:||31-Oct-2016|
|Citation:||Liu, Yang, Mueed, MA, Hossain, Md Shafayat, Hasdermir, S, Pfeiffer, LN, West, KW, Baldwin, KW, Shayegan, M. (2016). Morphing of two-dimensional hole systems at in parallel magnetic fields: Compressible, stripe, and fractional quantum Hall phases. Physical Review B, 94 (15), 10.1103/PhysRevB.94.155312|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||Physical Review B|
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