PREDICTION AND OBSERVATION OF POCKET VIBRATIONAL-MODES IN CRYSTALS

被引：10

作者：

SANDUSKY, KW

PAGE, JB

ROSENBERG, A

MUNGAN, CE

SIEVERS, AJ

机构：

[1] CORNELL UNIV,ATOM & SOLID STATE PHYS LAB,ITHACA,NY 14853

[2] CORNELL UNIV,CTR MAT SCI,ITHACA,NY 14853

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.67.871

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A perturbed-shell-model calculation for the impurity system KI:Ag+ predicts three nearly-degenerate localized gap modes of different symmetry and unusual amplitude patterns: The displacements of the defect's fourth-nearest neighbors are more than an order of magnitude larger than those of the impurity or its nearest neighbors. Far-infrared isotope-effect measurements directly confirm the existence of these localized pocket modes.

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收藏

页码：871 / 874

页数：4

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