Mesoscopic charge-density-wave junctions

被引：51

作者：

Visscher, MI

Bauer, GEW

机构：

[1] Delft University of Technology, Faculty of Applied Physics, Delft Institute for Microelectronics and Submicron Technology (DIMES), Department of Theoretical Physics, 2628 CJ Delft

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.54.2798

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate theoretically charge-density waves (CDW's) in mesoscopic heterostructures for the configuration where the one-dimensional chains are oriented normal to the interfaces. Based on Bogoliubov-de Gennes equations and suitable boundary conditions, ground state properties of phase coherent CDW systems are calculated in the mean-field approximation. It is shown that in a charge-density-wave/normal-metal/charge-density-wave junction the CDW condensates couple through the normal metal region by means of Friedel oscillations. Geometrical resonance effects are predicted. We relate the phase-dependent energy of the junction to a momentum current, carried by electron-hole pairs, The effects of pinning potentials at the interfaces are also considered. Finally, we discuss the analogies with superconductor and ferromagnet junctions.

引用

页码：2798 / 2805

页数：8

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