摘要:

AbstractWe provide a semiclassical description of the shell structure in large prolate cavities. Level densities and shell‐correction energies are obtained from periodic orbit theory, using a version of Gutzwiller's trace formula that takes into account continuous symmetries. The semiclassical results are compared to their quantum‐mechanical counterpa

ISSN:0003-3804    

DOI:10.1002/andp.19975090802

出版商:WILEY‐VCH Verlag    

年代:1997

数据来源: WILEY

摘要:

AbstractWe consider the problem of sliding motion of a charge‐density‐wave subject to static disorder within an elastic medium model. Starting with a field‐theoretical formulation, which allows exact disorder averaging, we propose a self‐consistent approximation scheme to obtain results beyond the standard large‐velocity expansion. Explicit calculations are carried out in three spatial dimensions. For the conductivity, we find a strong‐coupling regime at electrical fields just above the pinning threshold. Phase and velocity correlation functions scale differently from the high‐field regime, and static phase correlations converge to the pinned‐phase behaviour. The sliding charge‐density‐wave is accompanied b

ISSN:0003-3804    

DOI:10.1002/andp.19975090803

出版商:WILEY‐VCH Verlag    

年代:1997

数据来源: WILEY

ISSN:0003-3804    

DOI:10.1002/andp.19975090801

出版商:WILEY‐VCH Verlag    

年代:1997

数据来源: WILEY