Avoided band crossings: Tuning metal-insulator transitions in chaotic systems

被引：23

作者：

Ketzmerick, R ^{[1
]}

Kruse, K

Geisel, T

机构：

[1] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA

[2] Max Planck Inst Stromungsforsch, D-37073 Gottingen, Germany

[3] Univ Gottingen, Inst Nichtlineare Dynam, D-37073 Gottingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.80.137

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that avoided crossings of energy bands may give rise to a variety of phenomena such as transitions from metal to insulator and vice versa, changes in localization lengths, and changes in the fractal dimension of energy spectra. We explain the occurrence of these phenomena in the kicked Harper model under classically chaotic conditions and predict them to occur in other systems.

引用

页码：137 / 140

页数：4

共 26 条

[1] ABSENCE OF DIFFUSION IN CERTAIN RANDOM LATTICES [J].

ANDERSON, PW .

PHYSICAL REVIEW, 1958, 109 (05) :1492-1505

[2] PHASE-DIAGRAM IN THE KICKED HARPER MODEL [J].

ARTUSO, R ;

BORGONOVI, F ;

GUARNERI, I ;

REBUZZINI, L ;

CASATI, G .

PHYSICAL REVIEW LETTERS, 1992, 69 (23) :3302-3305

[3] FRACTAL AND DYNAMICAL PROPERTIES OF THE KICKED HARPER MODEL [J].

ARTUSO, R ;

CASATI, G ;

BORGONOVI, F ;

REBUZZINI, L ;

GUARNERI, I .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1994, 8 (03) :207-235

[4] FRACTAL SPECTRUM AND ANOMALOUS DIFFUSION IN THE KICKED HARPER MODEL [J].

ARTUSO, R ;

CASATI, G ;

SHEPELYANSKY, D .

PHYSICAL REVIEW LETTERS, 1992, 68 (26) :3826-3829

[5]

Aubry S., 1980, Annals of the Israel Physical Society, V3, P133

[6]

AZBEL MY, 1964, SOV PHYS JETP-USSR, V19, P634

[7] SPECIAL VARIETY IN THE KICKED HARPER MODEL [J].

BORGONOVI, F ;

SHEPELYANSKY, D .

EUROPHYSICS LETTERS, 1995, 29 (02) :117-122

[8] QUANTUM SUPPRESSION OF DIFFUSION ON STOCHASTIC WEBS [J].

DANA, I .

PHYSICAL REVIEW LETTERS, 1994, 73 (12) :1609-1612

[9] Exploring a metal-insulator transition with ultracold atoms in standing light waves? [J].

Drese, K ;

Holthaus, M .

PHYSICAL REVIEW LETTERS, 1997, 78 (15) :2932-2935

[10]

GEISEL T, 1992, NATO ADV SCI I C-MAT, V358, P43

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