Breakdown of the integer and fractional quantum Hall states in a quantum point contact

被引：9

作者：

Dillard, C. ^{[1
]}

Lin, X. ^{[1
]}

Kastner, M. A. ^{[1
]}

Pfeiffer, L. N. ^{[2
]}

West, K. W. ^{[2
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2013年 / 47卷

基金：

美国国家科学基金会;

关键词：

GAAS/ALGAAS HETEROSTRUCTURES; CRITICAL CURRENTS; RESISTANCE; DENSITY;

D O I：

10.1016/j.physe.2012.10.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The integer and fractional quantum Hall states are known to breakdown at high dc bias, exhibiting deviation from the ideal incompressible behavior. We measure breakdown of the nu=2, 3, 4, 5 integer and the nu=4/3 and 5/3 fractional states in a quantum point contact (QPC) of lithographic width similar to 600 nm. Dependence of the critical current on magnetic field, QPC gate voltage, and QPC width are presented. Of particular interest, the critical current of the 4/3 and 5/3 fractional states shows the opposite dependence on QPC width compared to the integer states. This previously unobserved result is not explained by current theories of breakdown. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：290 / 296

页数：7

共 50 条

[1] Half-Integer Conductance Plateau at the ν=2/3 Fractional Quantum Hall State in a Quantum Point Contact
Nakamura, J.
Liang, S.
Gardner, G. C.
Manfra, M. J.
PHYSICAL REVIEW LETTERS, 2023, 130 (07)
[2] The contact hyperfine interaction and the integer and fractional quantum Hall effects
Maude, Duncan K.
Piot, Benjamin A.
Desrat, Wilfried
2014 11TH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE ELECTRONICS (WOLTE), 2014, : 49 - 52
[3] Imaging the Conductance of Integer and Fractional Quantum Hall Edge States
Pascher, Nikola
Roessler, Clemens
Ihn, Thomas
Ensslin, Klaus
Reichl, Christian
Wegscheider, Werner
PHYSICAL REVIEW X, 2014, 4 (01):
[4] Edge states in the regimes of integer and fractional quantum Hall effects
Deviatov, E. V.
PHYSICS-USPEKHI, 2007, 50 (02) : 197 - 218
[5] Interplay of fractional quantum Hall states and localization in quantum point contacts
Baer, S.
Roessler, C.
de Wiljes, E. C.
Ardelt, P. -L.
Ihn, T.
Ensslin, K.
Reichl, C.
Wegscheider, W.
PHYSICAL REVIEW B, 2014, 89 (08)
[6] Andreev reflection of quantum Hall states through a quantum point contact
Hatefipour, Mehdi
Cuozzo, Joseph J.
Levy, Ido
Strickland, William M.
Langone, Dylan
Rossi, Enrico
Shabani, Javad
PHYSICAL REVIEW B, 2024, 109 (03)
[7] Current breakdown of the integer and fractional quantum Hall effects detected by torque magnetometry
Matthews, AJ
Watts, JP
Zhu, M
Usher, A
Elliott, M
Herrenden-Harker, WG
Morris, PR
Simmons, MY
Ritchie, DA
PHYSICA E, 2000, 6 (1-4): : 140 - 143
[8] The connection between integer quantum hall effect and fractional quantum hall effect
Koo, Je Huan
Cho, Guangsup
MODERN PHYSICS LETTERS B, 2007, 21 (2-3): : 109 - 113
[9] Fractional quantum Hall effect in a quantum point contact at filling fraction 5/2
Jeffrey B. Miller
Iuliana P. Radu
Dominik M. Zumbühl
Eli M. Levenson-Falk
Marc A. Kastner
Charles M. Marcus
Loren N. Pfeiffer
Ken W. West
Nature Physics, 2007, 3 : 561 - 565
[10] Fractional quantum Hall effect in a quantum point contact at filling fraction 5/2
Miller, Jeffrey B.
Radu, Iuliana P.
Zumbuehl, Dominik M.
Levenson-Falk, Eli M.
Kastner, Marc A.
Marcus, Charles M.
Pfeiffer, Loren N.
West, Ken W.
NATURE PHYSICS, 2007, 3 (08) : 561 - 565

← 1 2 3 4 5 →