Topological Exciton Fermi Surfaces in Two-Component Fractional Quantized Hall Insulators.
Topological Exciton Fermi Surfaces in Two-Component Fractional Quantized Hall Insulators.
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二分量分数量子化霍尔绝缘体中的拓扑激子费米面。
DOI:
10.1103/physrevlett.121.026603
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发表时间:
2018
影响因子:
8.6
通讯作者:
Barkeshli M
中科院分区:
文献类型:
--
作者:
Barkeshli M
A wide variety of two-dimensional electron systems allow for independent control of the total and relative charge density of two-component fractional quantum Hall (FQH) states. In particular, a recent experiment on bilayer graphene (BLG) observed a continuous transition between a compressible and incompressible phase at total fillingas charge is transferred between the layers, with the remarkable property that the incompressible phase has a finite interlayer polarizability. We argue that this occurs because the topological order ofsystems supports a novel type of interlayer exciton that carries Fermi statistics. If the fermionic excitons are lower in energy than the conventional bosonic excitons (i.e., electron-hole pairs), they can form an emergent neutral Fermi surface, providing a possible explanation of an incompressible yet polarizable state at. We perform exact diagonalization studies that demonstrate that fermionic excitons are indeed lower in energy than bosonic excitons. This suggests that a “topological exciton metal” hidden inside a FQH insulator may have been realized experimentally in BLG. We discuss several detection schemes by which the topological exciton metal can be experimentally probed.
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影响因子:
1.9
作者:
R. Willett
通讯作者:
R. Willett
影响因子:
64.8
作者:
A. Zibrov;C. Kometter;Haoxin Zhou;E. Spanton;T. Taniguchi;Kenji Watanabe;M. Zaletel;A. Young
通讯作者:
A. Zibrov;C. Kometter;Haoxin Zhou;E. Spanton;T. Taniguchi;Kenji Watanabe;M. Zaletel;A. Young
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Hantao Lu;S. Sarma;Kwon Park
通讯作者:
Kwon Park
影响因子:
8.6
作者:
Jamei, R;Kivelson, S;Spivak, B
通讯作者:
Spivak, B
影响因子:
8.6
作者:
EISENSTEIN, JP;STORMER, HL;WEST, KW
通讯作者:
WEST, KW