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

C. Dillard; X. Lin; M. A. Kastner; L. N. Pfeiffer; K. W. West

doi:10.1016/j.physe.2012.10.003

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

C. Dillard, X. Lin, M. A. Kastner, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

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 n = 2, 3, 4, 5 integer and the n=4/3 and 5/3 fractional states in a quantum point contact (QPC) of lithographic width ~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.

Original language	English (US)
Pages (from-to)	290-296
Number of pages	7
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	47
DOIs	https://doi.org/10.1016/j.physe.2012.10.003
State	Published - 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

Access to Document

10.1016/j.physe.2012.10.003

Cite this

@article{e7022c7e23374e05baff4c0ebcf04c38,

title = "Breakdown of the integer and fractional quantum Hall states in a quantum point contact",

abstract = "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 n = 2, 3, 4, 5 integer and the n=4/3 and 5/3 fractional states in a quantum point contact (QPC) of lithographic width ~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.",

author = "C. Dillard and X. Lin and Kastner, {M. A.} and Pfeiffer, {L. N.} and West, {K. W.}",

year = "2013",

doi = "10.1016/j.physe.2012.10.003",

language = "English (US)",

volume = "47",

pages = "290--296",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier",

}

TY - JOUR

T1 - Breakdown of the integer and fractional quantum Hall states in a quantum point contact

AU - Dillard, C.

AU - Lin, X.

AU - Kastner, M. A.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2013

Y1 - 2013

N2 - 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 n = 2, 3, 4, 5 integer and the n=4/3 and 5/3 fractional states in a quantum point contact (QPC) of lithographic width ~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.

AB - 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 n = 2, 3, 4, 5 integer and the n=4/3 and 5/3 fractional states in a quantum point contact (QPC) of lithographic width ~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.

UR - http://www.scopus.com/inward/record.url?scp=84874949194&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874949194&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2012.10.003

DO - 10.1016/j.physe.2012.10.003

M3 - Article

AN - SCOPUS:84874949194

SN - 1386-9477

VL - 47

SP - 290

EP - 296

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this