Topology- and symmetry-protected domain wall conduction in quantum Hall nematics
Topology- and symmetry-protected domain wall conduction in quantum Hall nematics
复制标题
量子霍尔向列中拓扑和对称保护的畴壁传导
DOI:
10.1103/physrevb.100.165103
复制
发表时间:
2019
影响因子:
3.7
通讯作者:
Parameswaran, S. A.
中科院分区:
文献类型:
--
作者:
Agarwal, Kartiek;Randeria, Mallika T.;Yazdani, A.;Sondhi, S. L.;Parameswaran, S. A.
We consider domain walls in nematic quantum Hall ferromagnets predicted to form in multivalley semiconductors, recently probed by scanning tunneling microscopy experiments on Bi(111) surfaces. We show that the domain wall properties depend sensitively on the filling factorof the underlying (integer) quantum Hall states. Forand in the absence of impurity scattering we argue that the wall hosts a single-channel Luttinger liquid whose gaplessness is a consequence of valley and charge conservation. For, it supports a two-channel Luttinger liquid, which for sufficiently strong interactions enters a symmetry-preserving thermal metal phase with a charge gap coexisting with gapless neutral intervalley modes. The domain wall physics in this state is identical to that of a bosonic topological insulator protected bysymmetry, and we provide a formal mapping between these problems. We discuss other unusual properties and experimental signatures of these anomalous one-dimensional systems.
登录
查看更多内容
影响因子:
3.7
作者:
Richard L. Fern;R. Bondesan;S. Simon
通讯作者:
S. Simon
影响因子:
3.7
作者:
T. Gokmen;M. Shayegan
通讯作者:
M. Shayegan
影响因子:
1.7
作者:
M. Shayegan;E. D. Poortere;O. Gunawan;Y. Shkolnikov;E. Tutuc;K. Vakili
通讯作者:
K. Vakili
DOI:
10.1007/s100510050472
发表时间:
1998
期刊:
The European Physical Journal B - Condensed Matter and Complex Systems
影响因子:
--
作者:
J. Voit
通讯作者:
J. Voit
影响因子:
3.7
作者:
A. Mitra;S. Girvin
通讯作者:
S. Girvin