Mobility edge of Stark many-body localization

被引：24
|
作者：
Zhang, Li [1 ,2 ,3 ]
Ke, Yongguan [1 ,2 ,4 ]
Liu, Wenjie [1 ,2 ,3 ]
Lee, Chaohong [1 ,2 ,3 ]
机构：
[1] Sun Yat Sen Univ, Guangdong Prov Key Lab Quantum Metrol & Sensing, Zhuhai Campus, Zhuhai 519082, Peoples R China
[2] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai Campus, Zhuhai 519082, Peoples R China
[3] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou Campus, Guangzhou 510275, Peoples R China
[4] Australian Natl Univ, Nonlinear Phys Ctr, Res Sch Phys, Canberra, ACT 2601, Australia
来源：
PHYSICAL REVIEW A | 2021年 / 103卷 / 02期
基金：
中国国家自然科学基金;
关键词：
ELECTRONS; DIFFUSION; DYNAMICS; FERMIONS; ABSENCE;
D O I：
10.1103/PhysRevA.103.023323
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate many-body localization of interacting spinless fermions in a one-dimensional disordered and tilted lattice. The fermions undergo energy-dependent transitions from ergodic to Stark many-body localization driven by the tilted potential, which are manifested by the appearance of mobility edges between delocalized states and Stark many-body localized states even when the disorder is weak. We can concretely diagnose these transitions rather than crossovers by finite-size scaling of energy-level statistics. Moreover, in the Stark many-body localization, the entanglement entropy obeys the area law scaling, in analogy to that in the conventional many-body localization.
引用
收藏
页数：8
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