Edge reconstruction in fractional quantum Hall states

被引：0

作者：

Sabo, Ron ^{[1
]}

Gurman, Itamar ^{[1
]}

Rosenblatt, Amir ^{[1
]}

Lafont, Fabien ^{[1
]}

Banitt, Daniel ^{[1
]}

Park, Jinhong ^{[2
]}

Heiblum, Moty ^{[1
]}

Gefen, Yuval ^{[2
]}

Umansky, Vladimir ^{[1
]}

Mahalu, Diana ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, Braun Ctr Submicron Res, IL-76100 Rehovot, Israel

[2] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

来源：

NATURE PHYSICS | 2017年 / 13卷 / 05期

基金：

欧洲研究理事会;

关键词：

NEUTRAL-MODES; EFFECT REGIME; TRANSPORT; CHARGE; NU=2/3;

D O I：

10.1038/NPHYS4010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nature of edge reconstruction in the quantum Hall effect (QHE) and the issue of where the current flows have been debated for years. Moreover, the recent observation of proliferation of 'upstream' neutral modes in the fractional QHE has raised doubts about the present models of edge channels. Here, we present a new picture of the edge reconstruction in two of the hole-conjugate states. For example, while the present model for nu = (2/3) consists of a single downstream chiral charge channel with conductance (2/3)(e(2)/h) and an upstream neutral mode, we show that the current is carried by two separate downstream chiral edge channels, each with conductance (1/3)(e(2)/h). We uncover a novel mechanism of fragmentation of upstream neutral modes into downstream propagating charge modes that induces current fluctuations with zero net current. Our unexpected results underline the need for better understanding of edge reconstruction and energy transport in all fractional QHE states.

引用

页码：491 / 496

页数：6

共 50 条

[1] Edge reconstruction in fractional quantum Hall states
Sabo R.
Gurman I.
Rosenblatt A.
Lafont F.
Banitt D.
Park J.
Heiblum M.
Gefen Y.
Umansky V.
Mahalu D.
[J]. Nature Physics, 1600, Nature Publishing Group (13): : 491 - 496
[2] Edge reconstruction in the fractional quantum Hall regime
Wan, X
Rezayi, EH
Yang, K
[J]. PHYSICAL REVIEW B, 2003, 68 (12)
[3] Edge states in the fractional quantum hall effect
[J]. 1991, American Physical Society, Melville, United States (67)
[4] Fractional edge reconstruction in integer quantum Hall phases
Khanna, Udit
Goldstein, Moshe
Gefen, Yuval
[J]. PHYSICAL REVIEW B, 2021, 103 (12)
[5] Universal structure of the edge states of the fractional quantum Hall states
Lopez, A
Fradkin, E
[J]. PHYSICAL REVIEW B, 1999, 59 (23): : 15323 - 15331
[6] Quantum dot dephasing by fractional quantum Hall edge states
Nguyen, T. K. T.
Crepieux, A.
Jonckheere, T.
Nguyen, A. V.
Levinson, Y.
Martin, T.
[J]. PHYSICAL REVIEW B, 2006, 74 (15):
[7] Universal nonequilibrium states at the fractional quantum Hall edge
Levkivskyi, Ivan P.
[J]. PHYSICAL REVIEW B, 2016, 93 (16)
[8] EDGE STATES IN THE FRACTIONAL QUANTUM HALL-EFFECT
WANG, JK
GOLDMAN, VJ
[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (06) : 749 - 752
[9] REFLECTION OF EDGE STATES IN THE FRACTIONAL QUANTUM HALL REGIME
FROST, JEF
LIANG, CT
MACE, DR
SIMMONS, MY
PEPPER, M
RITCHIE, DA
[J]. SOLID STATE COMMUNICATIONS, 1995, 96 (06) : 327 - 331
[10] Edge excitations of paired fractional quantum Hall states
Milovanovic, M
Read, N
[J]. PHYSICAL REVIEW B, 1996, 53 (20): : 13559 - 13582

← 1 2 3 4 5 →