SUPERCONDUCTIVE SOLUTIONS FOR A 2-BAND HAMILTONIAN

被引:36
作者
CHAKRAVERTY, BK
机构
[1] Laboratoire d'Etudes des Propriétés Electroniques des Solides, Université Joseph Fourier, 38042 Grenoble Cedex 9
来源
PHYSICAL REVIEW B | 1993年 / 48卷 / 06期
关键词
D O I
10.1103/PhysRevB.48.4047
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A canonical two-band BCS Hamiltonian containing a Fermi surface of d holes and p holes for the high-T(c) cuprate oxides is examined and is shown to possess two superconducting gaps. It is also pointed out that the system admits a precursor phase of Cooper-pair droplets that undergoes a phase-locking transition at a critical temperature below the mean-field solution. Recent NMR and neutron-scattering results are discussed.
引用
收藏
页码:4047 / 4053
页数:7
相关论文
共 27 条
[1]  
AFFRONTE M, 1991, THESIS ECOLE POLYTEC
[2]  
ALLEN PB, 1980, MODERN TRENDS THEORY, P338
[3]   TUNNELING BETWEEN SUPERCONDUCTORS [J].
AMBEGAOKAR, V ;
BARATOFF, A .
PHYSICAL REVIEW LETTERS, 1963, 10 (11) :486-&
[4]   MODEL FOR LOCAL PARA-COOPERONS POSSIBLY RELEVANT FOR HIGH-TEMPERATURE SUPERCONDUCTORS [J].
BEALMONOD, MT .
PHYSICAL REVIEW B, 1989, 39 (16) :12293-12296
[5]   SUSCEPTIBILITY MEASUREMENTS SUPPORT HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].
BEDNORZ, JG ;
TAKASHIGE, M ;
MULLER, KA .
EUROPHYSICS LETTERS, 1987, 3 (03) :379-385
[6]   POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].
BEDNORZ, JG ;
MULLER, KA .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193
[7]   NMR-STUDY OF SPIN FLUCTUATIONS IN YBA2CU3O6+X [J].
BERTHIER, C ;
BERTHIER, Y ;
BUTAUD, P ;
CLARK, WG ;
GILLET, JA ;
HORVATIC, M ;
SEGRANSAN, P ;
HENRY, JY .
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1991, 185 :1141-1142
[8]  
CAI X, 1987, PHYS REV LETT, V2798
[9]   THEORY OF HIGH-TC SUPERCONDUCTIVITY IN OXIDES [J].
EMERY, VJ .
PHYSICAL REVIEW LETTERS, 1987, 58 (26) :2794-2797
[10]   GAP ENERGY AND LONG-RANGE ORDER IN THE BOSON-FERMION MODEL OF SUPERCONDUCTIVITY [J].
FRIEDBERG, R ;
LEE, TD .
PHYSICAL REVIEW B, 1989, 40 (10) :6745-6762