Resonant Raman scattering from superconducting single crystals of (BEDT-TTF)2I3

作者: K. I. Pokhodnia , A. Graja , M. Weger , D. Schweitzer

DOI: 10.1007/BF02198145

关键词:

摘要: A study of low energetic resonant Raman scattering (BEDT-TTF)2I3 superconducors was performed. The vanishing phonon bands accompanied by a decrease the electronic background observed belowTc. We propose theoretical explanation for this novel effect in terms Balseiro-Falicov model phonon-superconducting amplitude mode interaction.

参考文章(28)
B. Friedl, C. Thomsen, M. Cardona, Determination of the superconducting gap in R Ba 2 Cu 3 O 7 − δ Physical Review Letters. ,vol. 65, pp. 915- 918 ,(1990) , 10.1103/PHYSREVLETT.65.915
S. L. Cooper, F. Slakey, M. V. Klein, J. P. Rice, E. D. Bukowski, D. M. Ginsberg, Gap anisotropy and phonon self-energy effects in single-crystal YBa2Cu3O7- delta. Physical Review B. ,vol. 38, pp. 11934- 11937 ,(1988) , 10.1103/PHYSREVB.38.11934
C. Thomsen, M. Cardona, B. Gegenheimer, R. Liu, A. Simon, Untwinned single crystals of YBa2Cu3O7- delta : An optical investigation of the a-b anisotropy. Physical Review B. ,vol. 37, pp. 9860- 9863 ,(1988) , 10.1103/PHYSREVB.37.9860
Helmut Schwenk, Frieder Gross, Claus-Peter Heidmann, Klaus Andres, Dieter Schweitzer, Heimo Keller, α- And β-(Bedt-TTF)2I3 – Two Modifications With Contrasting Groundstate Properties: Insulator and Volume Superconductor Molecular Crystals and Liquid Crystals. ,vol. 119, pp. 329- 335 ,(1985) , 10.1080/00268948508075181
T. Ruf, C. Thomsen, R. Liu, M. Cardona, Raman study of the phonon anomaly in single-crystal Y Ba 2 Cu 3 O 7 − δ in the presence of a magnetic field Physical Review B. ,vol. 38, pp. 11985- 11987 ,(1988) , 10.1103/PHYSREVB.38.11985
H. Schwenk, C. P. Heidmann, F. Gross, E. Hess, K. Andres, D. Schweitzer, H. J. Keller, New, organic, volume superconductor at ambient pressure Physical Review B. ,vol. 31, pp. 3138- 3140 ,(1985) , 10.1103/PHYSREVB.31.3138
C. Hartzstein, V. Zevin, M. Weger, The phase diagram of TTF-TCNQ under pressure Solid State Communications. ,vol. 36, pp. 545- 549 ,(1980) , 10.1016/0038-1098(80)90384-1
Keizo Murata, Madoka Tokumoto, Hiroyuki Anzai, Hiroshi Bando, Gunzi Saito, Koji Kajimura, Takehiko Ishiguro, Superconductivity with the Onset at 8 K in the Organic Conductor β-(BEDT-TTF)2I3under Pressure Journal of the Physical Society of Japan. ,vol. 54, pp. 1236- 1239 ,(1985) , 10.1143/JPSJ.54.1236
D. Schweitzer, P. Bele, H. Brunner, E. Gogu, U. Haeberlen, I. Hennig, I. Klutz, R. Świetlik, H. J. Keller, A stable superconducting state at 8 K and ambient pressure in $$\alpha _t - (BEDT - TTF^ \star )_2 I_3 ^1 $$ European Physical Journal B. ,vol. 67, pp. 489- 495 ,(1987) , 10.1007/BF01304118