Boson-Fermion Mixtures, d-Wave Condensate, and Tunneling in Cuprates
作者： A. S. Alexandrov
关键词:
摘要: We argue that local pairs (bipolarons), formed by any short-range attraction are localized and cannot give rise to high-Tc no matter whether they hybridized with Fermions. However, a long-range Frohlich electron-phonon interaction can provide mobile intersite bipolarons in the CuO2 plane condensing at high Tc. The ground state of cuprates is thought be charged Bose-liquid single polarons existing only as thermal excitations. show some bipolaron configurations lead d wave Bose-Einstein condensate cuprates. It energy dispersion rather than particular pairing responsible for symmetry. Single-particle spectral density derived, taking into account realistic band structure disorder. tunneling photoemission (PES) spectra described.
springer.com
springerlink.com参考文章(27)
Y. DeWilde, N. Miyakawa, P. Guptasarma, M. Iavarone, L. Ozyuzer, J. F. Zasadzinski, P. Romano, D. G. Hinks, C. Kendziora, G. W. Crabtree, K. E. Gray, Unusual Strong-Coupling Effects in the Tunneling Spectroscopy of Optimally Doped and Overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ Physical Review Letters. ,vol. 80, pp. 153- 156 ,(1998) , 10.1103/PHYSREVLETT.80.153
A S Alexandrov, Nevill Mott, High Temperature Superconductors And Other Superfluids ,(1994)
Ch. Renner, B. Revaz, J.-Y. Genoud, K. Kadowaki, Ø. Fischer, Pseudogap Precursor of the Superconducting Gap in Under- and Overdoped Bi2Sr2CaCu2O8+δ Physical Review Letters. ,vol. 80, pp. 149- 152 ,(1998) , 10.1103/PHYSREVLETT.80.149
Peter Fulde, Peter Fulde, Strongly Correlated Electrons Electron Correlations in Molecules and Solids. ,vol. 60, pp. 267- 307 ,(1993) , 10.1007/978-3-642-97477-9_12
U Müller, H Stolz, W von der Osten, Picosecond magneto-quantum beats of free excitons in CdS Journal of Physics: Condensed Matter. ,vol. 10, pp. 2973- 2982 ,(1998) , 10.1088/0953-8984/10/13/014
H. L. Frisch, S. P. Lloyd, Electron Levels in a One-Dimensional Random Lattice Physical Review. ,vol. 120, pp. 1175- 1189 ,(1960) , 10.1103/PHYSREV.120.1175
Hiroshi Kamimura, Shunichi Matsuno, Yuji Suwa, Hideki Ushio, Occurrence of d-Wave Pairing in the Phonon-Mediated Mechanism of High Temperature Superconductivity in Cuprates. Physical Review Letters. ,vol. 77, pp. 723- 726 ,(1996) , 10.1103/PHYSREVLETT.77.723
D. A. Wollman, D. J. Van Harlingen, W. C. Lee, D. M. Ginsberg, A. J. Leggett, Experimental determination of the superconducting pairing state in YBCO from the phase coherence of YBCO-Pb dc SQUIDs. Physical Review Letters. ,vol. 71, pp. 2134- 2137 ,(1993) , 10.1103/PHYSREVLETT.71.2134
Bertrand I. Halperin, Green's Functions for a Particle in a One-Dimensional Random Potential Physical Review. ,vol. 139, pp. 104- 117 ,(1965) , 10.1103/PHYSREV.139.A104
Z.-X. Shen, J. R. Schrieffer, Momentum, Temperature, and Doping Dependence of Photoemission Lineshape and Implications for the Nature of the Pairing Potential in High-TcSuperconducting Materials Physical Review Letters. ,vol. 78, pp. 1771- 1774 ,(1997) , 10.1103/PHYSREVLETT.78.1771