Published September 1999 | Version v1
Journal article Metadata-only

On the 'Nonuniversal' Conductance of an Almost Ideal Quantum Wire

Creators

  • 1. Pedagogical University, Hradec Kralove (Czech Republic)
  • 2. Nuclear Physics Institute, Czech Academy of Sciences, Rez near Prague (Czech Republic)
  • 3. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow (Poland)

Description

High quality quantum wires conductance measurements have revealed an unexpected feature: the quantization step of the conductance is apparently system dependent. We show that even a single impurity (modelled by a short range potential) in a wire leads to enhanced backscattering and affects the conductance steps. We construct a random matrix model which shows similar behaviour with the size of conductance step dependent on a single parameter. (author)

Additional details

Publishing Information

Journal Title
Acta Physica Polonica. Series B
Journal Volume
30
Journal Issue
9
Journal Page Range
p. 2797-2810
ISSN
0587-4254

INIS

Country of Publication
Poland
Country of Input or Organization
Poland
INIS RN
30056986
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ELECTRIC CONDUCTIVITY; FERMI LEVEL; IMPURITIES; QUANTIZATION; QUANTUM MECHANICS; S MATRIX; SCHROEDINGER EQUATION; WIRES
Descriptors DEC
DIFFERENTIAL EQUATIONS; ELECTRICAL PROPERTIES; ENERGY LEVELS; EQUATIONS; MATRICES; MECHANICS; PARTIAL DIFFERENTIAL EQUATIONS; PHYSICAL PROPERTIES; WAVE EQUATIONS

Optional Information

Contract/Grant/Project number
KBN Grant 2P03B00915; Grant AS GAAV1048804
Notes
17 refs, 5 figs
Funding organization
Polish State Committee for Scientific Research, Warsaw (Poland)