Anderson localization of polaron states

被引：25

作者：

Bronold, FX ^{[1
]}

Fehske, H

机构：

[1] Univ Magdeburg, Inst Theoret Phys, D-39016 Magdeburg, Germany

[2] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany

[3] Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.66.073102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the vanishing of the typical polaron tunneling rate as an indicator of the breakdown of itinerancy, we study the localization of polaron states in a generic model for a disordered polaronic material. We find that extremely small disorder causes an Anderson localization of small polaron states. However, the ratio between the critical disorder strength needed to localize all states in the polaron band and the renormalized bandwidth is not necessarily smaller than for a bare electron.

引用

页码：731021 / 731024

页数：4

共 31 条

[1] SELF-CONSISTENT THEORY OF LOCALIZATION [J].

ABOUCHACRA, R ;

ANDERSON, PW ;

THOULESS, DJ .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1973, 6 (10) :1734-1752

[2] FROM ELECTRON TO SMALL POLARON - AN EXACT CLUSTER SOLUTION [J].

ALEXANDROV, AS ;

KABANOV, VV ;

RAY, DK .

PHYSICAL REVIEW B, 1994, 49 (14) :9915-9923

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

ANDERSON, PW .

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

[4] EFFECT OF FRANCK-CONDON DISPLACEMENTS ON MOBILITY EDGE AND ENERGY-GAP IN DISORDERED MATERIALS [J].

ANDERSON, PW .

NATURE-PHYSICAL SCIENCE, 1972, 235 (61) :163-&

[5] Holstein polaron [J].

Bonca, J ;

Trugman, SA ;

Batistic, I .

PHYSICAL REVIEW B, 1999, 60 (03) :1633-1642

[6] Dynamics of a single electron in the disordered Holstein model [J].

Bronold, FX ;

Saxena, A ;

Bishop, AR .

PHYSICAL REVIEW B, 2001, 63 (23)

[7] Small-polaron formation and optical absorption in Su-Schrieffer-Heeger and Holstein models [J].

Capone, M ;

Stephan, W ;

Grilli, M .

PHYSICAL REVIEW B, 1997, 56 (08) :4484-4493

[8] Dynamical mean-field theory of the small polaron [J].

Ciuchi, S ;

dePasquale, F ;

Fratini, S ;

Feinberg, D .

PHYSICAL REVIEW B, 1997, 56 (08) :4494-4512

[9] POLARON FORMATION NEAR A MOBILITY EDGE [J].

COHEN, MH ;

ECONOMOU, EN ;

SOUKOULIS, CM .

PHYSICAL REVIEW LETTERS, 1983, 51 (13) :1202-1205

[10] NUMERICAL-CALCULATION OF PATH-INTEGRALS - THE SMALL-POLARON MODEL [J].

DERAEDT, H ;

LAGENDIJK, A .

PHYSICAL REVIEW B, 1983, 27 (10) :6097-6109

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