Magnetoresistance study for systems of interacting electrons in two dimensions

Jan W. Kantelhardt; Richard Berkovits; Yshai Avishai

doi:10.1016/S0378-4371(01)00454-X

Magnetoresistance study for systems of interacting electrons in two dimensions

Jan W. Kantelhardt, Richard Berkovits, Yshai Avishai

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

The influence of Coulomb interaction and weak perpendicular magnetic field on the transport properties of spinless electrons in small disordered two dimensional systems is studied within a tight binding model. We trace the participation ratio of the renormalized zero-temperature tunneling amplitude as function of interaction strength U and magnetic field H, and find typical negative magnetoresistance for small disorder, while the behavior is more complicated for stronger disorder. The results suggest an effective weakening of the magnetic field for stronger Coulomb interaction in agreement with previous results for quantum dots.

Original language	English
Pages (from-to)	359-367
Number of pages	9
Journal	Physica A: Statistical Mechanics and its Applications
Volume	302
Issue number	1-4
DOIs	https://doi.org/10.1016/S0378-4371(01)00454-X
State	Published - 15 Dec 2001
Externally published	Yes
Event	International Workshop on Frontiers in the Physics of Complex Systems - Ramat-Gan, Israel Duration: 25 Mar 2001 → 28 Mar 2001

Keywords

Coulomb interaction
Exact diagonalization
Magnetoresistance
Tunneling amplitude
Weak localization

ASJC Scopus subject areas

Statistics and Probability
Condensed Matter Physics

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10.1016/S0378-4371(01)00454-X

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@article{06d45210ea3741d690467e85c7a887ed,

title = "Magnetoresistance study for systems of interacting electrons in two dimensions",

abstract = "The influence of Coulomb interaction and weak perpendicular magnetic field on the transport properties of spinless electrons in small disordered two dimensional systems is studied within a tight binding model. We trace the participation ratio of the renormalized zero-temperature tunneling amplitude as function of interaction strength U and magnetic field H, and find typical negative magnetoresistance for small disorder, while the behavior is more complicated for stronger disorder. The results suggest an effective weakening of the magnetic field for stronger Coulomb interaction in agreement with previous results for quantum dots.",

keywords = "Coulomb interaction, Exact diagonalization, Magnetoresistance, Tunneling amplitude, Weak localization",

author = "Kantelhardt, {Jan W.} and Richard Berkovits and Yshai Avishai",

note = "Funding Information: We would like to thank the Minerva Foundation for financial support. JK and RB are indebted to the NEC Research Institute, Princeton, and Prof. B. Altshuler for hospitality during a visit.; International Workshop on Frontiers in the Physics of Complex Systems ; Conference date: 25-03-2001 Through 28-03-2001",

year = "2001",

month = dec,

day = "15",

doi = "10.1016/S0378-4371(01)00454-X",

language = "English",

volume = "302",

pages = "359--367",

journal = "Physica A: Statistical Mechanics and its Applications",

issn = "0378-4371",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Magnetoresistance study for systems of interacting electrons in two dimensions

AU - Kantelhardt, Jan W.

AU - Berkovits, Richard

AU - Avishai, Yshai

N1 - Funding Information: We would like to thank the Minerva Foundation for financial support. JK and RB are indebted to the NEC Research Institute, Princeton, and Prof. B. Altshuler for hospitality during a visit.

PY - 2001/12/15

Y1 - 2001/12/15

N2 - The influence of Coulomb interaction and weak perpendicular magnetic field on the transport properties of spinless electrons in small disordered two dimensional systems is studied within a tight binding model. We trace the participation ratio of the renormalized zero-temperature tunneling amplitude as function of interaction strength U and magnetic field H, and find typical negative magnetoresistance for small disorder, while the behavior is more complicated for stronger disorder. The results suggest an effective weakening of the magnetic field for stronger Coulomb interaction in agreement with previous results for quantum dots.

AB - The influence of Coulomb interaction and weak perpendicular magnetic field on the transport properties of spinless electrons in small disordered two dimensional systems is studied within a tight binding model. We trace the participation ratio of the renormalized zero-temperature tunneling amplitude as function of interaction strength U and magnetic field H, and find typical negative magnetoresistance for small disorder, while the behavior is more complicated for stronger disorder. The results suggest an effective weakening of the magnetic field for stronger Coulomb interaction in agreement with previous results for quantum dots.

KW - Coulomb interaction

KW - Exact diagonalization

KW - Magnetoresistance

KW - Tunneling amplitude

KW - Weak localization

UR - http://www.scopus.com/inward/record.url?scp=0035894677&partnerID=8YFLogxK

U2 - 10.1016/S0378-4371(01)00454-X

DO - 10.1016/S0378-4371(01)00454-X

M3 - Conference article

AN - SCOPUS:0035894677

SN - 0378-4371

VL - 302

SP - 359

EP - 367

JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

IS - 1-4

T2 - International Workshop on Frontiers in the Physics of Complex Systems

Y2 - 25 March 2001 through 28 March 2001

ER -

Magnetoresistance study for systems of interacting electrons in two dimensions

Abstract

Keywords

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