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

页数：8

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