Effect of high pressure on the phonon spectra of Bi2223 in Andreev junctions
作者： V. M. Svistunov , V. B. Tarenkov , A. I. D’yachenko , R. Aoki
DOI: 10.1063/1.593497
关键词:
摘要: A “softening” of the high-frequency modes phonon spectrum is detected under pressure. These correspond to breathing oxygen and other vibrational Cu–O. The obtained results explain observed increase in ratio 2Δ/kTc within framework strong electron–phonon interaction model.
scitation.org
harvard.edu
aip.org
sci-hub.se 参考文章(9)
K. Langfeld, E. Frey, Anisotropic electron coupling as a phenomenological model for high-Tc superconductors. Physical Review B. ,vol. 48, pp. 4176- 4179 ,(1993) , 10.1103/PHYSREVB.48.4176
B. Renker, F. Gompf, E. Gering, N. Nücker, D. Ewert, W. Reichardt, H. Rietschel, Phonon Density-of-States for the High-TcSuperconductor La1.85Sr0.15CuO4, its Non-Superconducting Reference La2CuO4and for YBa2Cu3O7 Japanese Journal of Applied Physics. ,vol. 26, pp. 2143- 2144 ,(1987) , 10.7567/JJAPS.26S3.2143
S. Mase, T. Yasuda, Phonon dispersion curves of Bi2Sr2CaCu2O10−x and Bi2Sr2Ca2Cu3O12−y Solid State Communications. ,vol. 68, pp. 655- 658 ,(1988) , 10.1016/0038-1098(88)90157-3
V M Svistunov, M A Belogolovskiĭ, A I Khachaturov, Electron-phonon interaction in high-temperature superconductors Physics-Uspekhi. ,vol. 36, pp. 65- 80 ,(1993) , 10.1070/PU1993V036N02ABEH002130
O. Hoffman Soerensen, B. Kofoed, N. F. Pedersen, Sidney Shapiro, Microwave dependence of subharmonic gap structure in superconducting junctions Physical Review B. ,vol. 9, pp. 3746- 3756 ,(1974) , 10.1103/PHYSREVB.9.3746
V M Svistunov, M A Belogolovskiĭ, O I Chernyak, Tunnel investigations of metals at high pressures Physics-Uspekhi. ,vol. 30, pp. 1- 22 ,(1987) , 10.1070/PU1987V030N01ABEH002791
Donald M. Ginsberg, Physical properties of high temperature superconductors World Scientific. ,(1989)
R. Aoki, H. Murakami, T. Kita, Tunneling observation of optical-phonon mediation in high Tc superconductivity Physica C-superconductivity and Its Applications. ,vol. 235, pp. 1891- 1892 ,(1994) , 10.1016/0921-4534(94)92167-9
V. M. Svistunov, A. I. D'Yachenko, V. Yu. Tarenkov, Yu. N. Myasoedov, A. V. Abaleshev, R. V. Lutsiv, Andreev reflection and proximity effect in Hg 0.8 Pb 0.2 Ba 2 Ca 2 Cu 3 O 8 + delta ceramics under pressure: anomalously rapid increase in ∆(P) Low Temperature Physics. ,vol. 22, pp. 467- 470 ,(1996)