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Titolo:
Three-dimensional quantum percolation studied by level statistics
Autore:
Kaneko, A; Ohtsuki, T;
Indirizzi:
Sophia Univ, Dept Phys, Chiyoda Ku, Tokyo 1028554, Japan Sophia Univ Tokyo Japan 1028554 t Phys, Chiyoda Ku, Tokyo 1028554, Japan
Titolo Testata:
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
fascicolo: 5, volume: 68, anno: 1999,
pagine: 1488 - 1491
SICI:
0031-9015(199905)68:5<1488:TQPSBL>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
METAL-INSULATOR-TRANSITION; 2-DIMENSIONAL DISORDERED ELECTRONS; ANDERSON TRANSITION; RENORMALIZATION-GROUP; SPACING DISTRIBUTION; CRITICAL CONDUCTANCE; LOCALIZATION LENGTH; SCALING THEORY; MOBILITY EDGE; SYSTEMS;
Keywords:
quantum percolation; Anderson transition; universality class; critical exponent;
Tipo documento:
Letter
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Kaneko, A Sophia Univ, Dept Phys, Chiyoda Ku, Kioi Cho 7-1, Tokyo 1028554,Japan Sophia Univ Kioi Cho 7-1 Tokyo Japan 1028554 kyo 1028554, Japan
Citazione:
A. Kaneko e T. Ohtsuki, "Three-dimensional quantum percolation studied by level statistics", J PHYS JPN, 68(5), 1999, pp. 1488-1491

Abstract

Three-dimensional quantum percolation problems are studied by analyzing energy level statistics of electrons on maximally connected percolating clusters. The quantum percolation threshold p(q), which is larger than the classical percolation threshold p(c), becomes smaller when magnetic fields are applied, i.e., p(q)(B = 0) > p(q)(B not equal 0) > p(c). The critical exponents are found to be consistent. with the recently obtained values of the Anderson model, supporting the conjecture that the quantum percolation is classified onto the same universality classes of the Anderson transition. Novel critical level statistics at the percolation threshold is also reported.

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Documento generato il 04/04/20 alle ore 08:49:53