Mobile small polaron

被引：193

作者：

Alexandrov, AS ^{[1
]}

Kornilovitch, PE

机构：

[1] Loughborough Univ Technol, Dept Phys, Loughborough LE11 3TU, Leics, England

[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.82.807

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Extending the Frohlich polaron problem to a discrete ionic lattice we study a polaronic state with a small radius of the wave function but a large size of the lattice distortion. We calculate the energy dispersion and the effective mass of the polaron with the 1/lambda perturbation theory and with the exact Monte Carlo method in the nonadiabatic and adiabatic regimes, respectively. The "small" Frohlich polaron is found to be lighter than the small Holstein polaron by 1 or more orders of magnitude.

引用

页码：807 / 810

页数：4

共 32 条

[1]

Alexandrov A. S., 1995, POLARONS BIPOLARONS

[2] Bipolaron anisotropic flat bands, Hall mobility edge, and metal-semiconductor duality of overdoped high-T-c oxides [J].

Alexandrov, AS .

PHYSICAL REVIEW B, 1996, 53 (05) :2863-2869

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

ALEXANDROV, AS ;

KABANOV, VV ;

RAY, DK .

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

[4]

ALEXANDROV AS, CONDMAT9807185

[5]

APPEL J, 1968, SOLID STATE PHYSICS, V21

[6]

Bottger H., 1985, Hopping conduction in solids, DOI [10.1515/9783112618189, DOI 10.1515/9783112618189]

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

DERAEDT, H ;

LAGENDIJK, A .

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

[8]

Devreese J. T., 1996, ENCY APPL PHYS, V14, P383, DOI DOI 10.1002/3527600434.EAP347

[9] THEORY OF TRANSITIONS FROM LARGE TO NEARLY-SMALL POLARONS, WITH APPLICATION TO ZR-DOPED SUPERCONDUCTING SRTIO3 [J].

EAGLES, DM .

PHYSICAL REVIEW, 1969, 181 (03) :1278-&

[10] OPTICAL-ABSORPTION BY MIXED POLARONS .1. THEORY [J].

EAGLES, DM .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (04) :637-653

← 1 2 3 4 →