COLLECTIVE EXCITATIONS IN THE ANHARMONIC CRYSTAL

被引：1
|
作者：
VERBEURE, A
ZAGREBNOV, VA
机构：
[1] UNIV AIX MARSEILLE 2,DEPT PHYS,F-13288 MARSEILLE 9,FRANCE
[2] CNRS,CTR PHYS THEOR,F-13288 MARSEILLE 9,FRANCE
来源：
PHYSICA A | 1995年 / 215卷 / 03期
关键词：
D O I：
10.1016/0378-4371(94)00260-Z
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We consider a lattice model of an anharmonic crystal and compute the isothermal (chi(T)) and adiabatic (chi(S)) susceptibilities for the lattice displacement below T-c. A detailed analysis is given in terms of the dimension of the lattice and a decay parameter of the harmonic force. It turns out that there is a phase-space region for which 0 < chi(T)/chi(S) < 1, indicating breaking of ergodicity, and a region for which chi(T) is finite, indicating the presence of a plasmon frequency due to the anharmonicity.
引用
收藏
页码：394 / 404
页数：11
相关论文
共 50 条
  • [21] Fano resonance of collective excitations in 1D plasmonic crystal
    Akbari-Moghanjoughi, M.
    PHYSICS OF PLASMAS, 2019, 26 (06)
  • [22] Anharmonic excitations in the FPU and FK models
    J. Szeftel
    G. Huang
    The European Physical Journal B - Condensed Matter and Complex Systems, 2002, 27 : 329 - 334
  • [23] Anharmonic excitations in high Tc materials
    Russell, F.M.
    Collins, D.R.
    Physics Letters, Section A: General, Atomic and Solid State Physics, 1996, 216 (1-5): : 197 - 202
  • [24] Transport of vibrational excitations in anharmonic lattices
    Nevedrov, D
    JOURNAL OF LUMINESCENCE, 1998, 76-7 : 575 - 580
  • [25] THEORY OF ANHARMONIC COLLECTIVE OSCILLATIONS
    FERREIRA, LS
    CALDEIRA, MH
    NUCLEAR PHYSICS A, 1972, A189 (02) : 250 - &
  • [26] Anharmonic excitations in the FPU and FK models
    Szeftel, J
    Huang, G
    EUROPEAN PHYSICAL JOURNAL B, 2002, 27 (03): : 329 - 334
  • [27] LOCALIZED EXCITATIONS OF UNIFORM ANHARMONIC LATTICES
    BURLAKOV, VM
    KISELEV, SA
    RUPASOV, VI
    JETP LETTERS, 1990, 51 (09) : 544 - 547
  • [28] MAGNETOPLASMA EXCITATIONS IN ANHARMONIC ELECTRON DOTS
    YE, ZL
    ZAREMBA, E
    PHYSICAL REVIEW B, 1994, 50 (23): : 17217 - 17229
  • [29] COLLECTIVE EXCITATIONS IN SUPERCONDUCTORS
    YOSIDA, K
    PROGRESS OF THEORETICAL PHYSICS, 1959, 21 (05): : 731 - 744
  • [30] COLLECTIVE EXCITATIONS IN ANTIDOTS
    KERN, K
    HEITMANN, D
    GRAMBOW, P
    ZHANG, YH
    PLOOG, K
    PHYSICAL REVIEW LETTERS, 1991, 66 (12) : 1618 - 1621
12345