Magnetic-field effects on strongly localized electrons

Ernesto Medina; Mehran Kardar; Yonathan Shapir; Xiang Rong Wang

doi:10.1103/PhysRevLett.64.1816

Magnetic-field effects on strongly localized electrons

Ernesto Medina^*
, Mehran Kardar
, Yonathan Shapir
, Xiang Rong Wang

^*Corresponding author for this work

Massachusetts Institute of Technology
University of Rochester

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

58 Scopus citations

Abstract

The magnetic-field response of strongly localized electrons is probed by examining the quantum interference of forward scattering paths. With no disorder, there is a rich structure in the tunneling rate, which is sensitively dependent upon commensurability of the flux per plaquette with the flux quantum. With nonmagnetic impurities, there is a positive magnetoconductance, and the localization length appears to increase as B1/2. With impurities breaking time-reversal symmetry, the distribution of tunneling rates is not changed by the magnetic field.

Original language	English
Pages (from-to)	1816-1819
Number of pages	4
Journal	Physical Review Letters
Volume	64
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.64.1816
State	Published - 1990
Externally published	Yes

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10.1103/PhysRevLett.64.1816

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title = "Magnetic-field effects on strongly localized electrons",

abstract = "The magnetic-field response of strongly localized electrons is probed by examining the quantum interference of forward scattering paths. With no disorder, there is a rich structure in the tunneling rate, which is sensitively dependent upon commensurability of the flux per plaquette with the flux quantum. With nonmagnetic impurities, there is a positive magnetoconductance, and the localization length appears to increase as B1/2. With impurities breaking time-reversal symmetry, the distribution of tunneling rates is not changed by the magnetic field.",

author = "Ernesto Medina and Mehran Kardar and Yonathan Shapir and Wang, \{Xiang Rong\}",

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doi = "10.1103/PhysRevLett.64.1816",

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AU - Medina, Ernesto

AU - Kardar, Mehran

AU - Shapir, Yonathan

AU - Wang, Xiang Rong

PY - 1990

Y1 - 1990

N2 - The magnetic-field response of strongly localized electrons is probed by examining the quantum interference of forward scattering paths. With no disorder, there is a rich structure in the tunneling rate, which is sensitively dependent upon commensurability of the flux per plaquette with the flux quantum. With nonmagnetic impurities, there is a positive magnetoconductance, and the localization length appears to increase as B1/2. With impurities breaking time-reversal symmetry, the distribution of tunneling rates is not changed by the magnetic field.

AB - The magnetic-field response of strongly localized electrons is probed by examining the quantum interference of forward scattering paths. With no disorder, there is a rich structure in the tunneling rate, which is sensitively dependent upon commensurability of the flux per plaquette with the flux quantum. With nonmagnetic impurities, there is a positive magnetoconductance, and the localization length appears to increase as B1/2. With impurities breaking time-reversal symmetry, the distribution of tunneling rates is not changed by the magnetic field.

UR - https://www.scopus.com/pages/publications/7444242725

U2 - 10.1103/PhysRevLett.64.1816

DO - 10.1103/PhysRevLett.64.1816

M3 - Artículo

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VL - 64

SP - 1816

EP - 1819

JO - Physical Review Letters

JF - Physical Review Letters

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Magnetic-field effects on strongly localized electrons

Abstract

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