RAMAN-SCATTERING IN ORGANIC SUPERCONDUCTOR (BEDT-TTF)2I3 - A MODEL STUDY

被引:10
作者
BEHERA, SN
GHOSH, H
机构
[1] Institute of Physics, Bhubaneswar, 751005, Sachivalaya Marg
来源
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1994年 / 95卷 / 03期
关键词
D O I
10.1007/BF01343952
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
An interpretation of the Raman data of the organic superconductor (BEDT-TTF)2I3 is given, based on the modified charge bag model for superconductivity. The Raman intensities are calculated at zero temperature both in the normal as well as the superconducting (SC) states. The scattering due to charge carriers as well as the phonons are taken into account. The results show a constant intensity background which reduces on going from the normal to the superconducting state. Similarly, the loss of intensity, broadening and softening of the frequency of a low lying phonon on going from the normal to the SC state are predicted. All these features are in qualitative agreement with the observed Raman data.
引用
收藏
页码:275 / 280
页数:6
相关论文
共 14 条
[1]   PHONON RAMAN-SCATTERING IN SUPERCONDUCTORS [J].
BALSEIRO, CA ;
FALICOV, LM .
PHYSICAL REVIEW LETTERS, 1980, 45 (08) :662-665
[2]   ELECTRON-PHONON INTERACTION IN CHARGE-DENSITY-WAVE SUPERCONDUCTORS [J].
BEHERA, SN ;
MISHRA, SG .
PHYSICAL REVIEW B, 1985, 31 (05) :2773-2775
[3]  
Cooper S. L., 1990, Comments on Condensed Matter Physics, V15, P99
[4]   THE CHARGE BAG MECHANISM OF SUPERCONDUCTIVITY IN CARRIER INJECTED CHARGE-DENSITY WAVE SYSTEMS [J].
GAITONDE, DM ;
BEHERA, SN .
PHYSICA C, 1991, 173 (3-4) :293-303
[5]  
GHOSH HP, IN PRESS
[6]  
ISHIGURO T, 1990, SPRINGER SERIES SOLI, V48, P99
[7]   RESONANT RAMAN-SCATTERING FROM SUPERCONDUCTING SINGLE-CRYSTALS OF (BEDT-TTF)2I3 [J].
POKHODNIA, KI ;
GRAJA, A ;
WEGER, M ;
SCHWEITZER, D .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1993, 90 (02) :127-133
[8]   PHONON-RAMAN SCATTERING IN A CORRELATED SUPERCONDUCTOR [J].
SA, D ;
BEHERA, SN .
PHYSICA C, 1992, 203 (3-4) :347-368
[9]   A STABLE SUPERCONDUCTING STATE AT 8 K AND AMBIENT PRESSURE IN ALPHA-T-(BEDT-TTF)2I3(1) [J].
SCHWEITZER, D ;
BELE, P ;
BRUNNER, H ;
GOGU, E ;
HAEBERLEN, U ;
HENNIG, I ;
KLUTZ, I ;
SWIETLIK, R ;
KELLER, HJ .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 67 (04) :489-495
[10]  
TUTO I, 1992, PHYS REV B, V45, P4842