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Xiaoxue Liu
Researcher at Brown University
Publications - 14
Citations - 654
Xiaoxue Liu is an academic researcher from Brown University. The author has contributed to research in topics: Bilayer graphene & Landau quantization. The author has an hindex of 7, co-authored 13 publications receiving 330 citations. Previous affiliations of Xiaoxue Liu include Rice University & Peking University.
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Journal ArticleDOI
Tuning electron correlation in magic-angle twisted bilayer graphene using Coulomb screening
TL;DR: In this article, the authors introduce a device geometry whereby magic-angle twisted bilayer graphene is placed in close proximity to a Bernal bilayer, separated by a 3-nanometer-thick barrier.
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Observation of a Helical Luttinger Liquid in InAs/GaSb Quantum Spin Hall Edges.
Tingxin Li,Pengjie Wang,Hailong Fu,Lingjie Du,Kate Schreiber,Xiaoyang Mu,Xiaoxue Liu,Gerard Sullivan,Gabor Csathy,Xi Lin,Rui-Rui Du,Rui-Rui Du +11 more
TL;DR: Realization of a tunable Luttinger liquid offers a one-dimensional model system for future studies of predicted correlation effects and underscores the strong electron-electron interaction effect in transport of InAs/GaSb edge states.
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Isospin Pomeranchuk effect in twisted bilayer graphene
Yu Saito,Fangyuan Yang,Jingyuan Ge,Xiaoxue Liu,Takashi Taniguchi,Kenji Watanabe,Jia Li,Erez Berg,Andrea Young +8 more
TL;DR: In this article, the Pomeranchuk effect was used to explain the spin and valley isospin ordering in twisted bilayer graphene. But, unlike 3He, no discontinuities are observed in the thermodynamic quantities across this transition, and there is no sign of a correlated phase appearing in the low-temperature limit.
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Tuning electron correlation in magic-angle twisted bilayer graphene using Coulomb screening.
TL;DR: Transport measurements show that tuning Coulomb screening has opposite effects on the insulating and superconducting states: As Coulomb interaction is weakened by screening, the insulators states become less robust, whereas the stability of superconductivity at the optimal doping is enhanced.
Journal ArticleDOI
Isospin Pomeranchuk effect and the entropy of collective excitations in twisted bilayer graphene
Yu Saito,Fangyuan Yang,Jingyuan Ge,Xiaoxue Liu,Kenji Watanabe,Takashi Taniguchi,Jia Li,Erez Berg,Andrea Young +8 more
TL;DR: In this paper, the Pomeranchuk effect was used to explain the spin and valley-isospin stiffness of twisted bilayer graphene and showed that the resistivity peak is adiabatically connected to a finite-field magnetic phase transition at which the system develops finite isospin polarization.