Isotope effect and resistivity in the Hubbard model for d-wave superconductivity

被引:31
作者
Dahm, T [1 ]
Manske, D [1 ]
Fay, D [1 ]
Tewordt, L [1 ]
机构
[1] UNIV HAMBURG,ABT THEORET FESTKORPERPHYS,D-20355 HAMBURG,GERMANY
来源
PHYSICAL REVIEW B | 1996年 / 54卷 / 17期
关键词
D O I
10.1103/PhysRevB.54.12006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
For spin-fluctuation-induced d-wave superconductivity in a two-dimensional Hubbard model we calculate the suppression of T-c, the isotope exponent alpha, and the enhancement of the resistivity rho due to additional phonon interaction. The smallest T-c suppression and the largest alpha values are obtained for interactions alpha(2)F(q, omega) which are enhanced at q = 0. For a reasonably large coupling constant lambda(p) the enhancement of rho yields qualitative agreement with the data on YBa2Cu3O7. However, the largest values of alpha (similar to 0.2) lie at the lower limit of the measured values for reduced-T-c materials.
引用
收藏
页码:12006 / 12009
页数:4
相关论文
共 13 条
[1]   QUASI-PARTICLE AND SPIN EXCITATION-SPECTRA IN THE NORMAL AND D-WAVE SUPERCONDUCTING STATE OF THE 2-DIMENSIONAL HUBBARD-MODEL [J].
DAHM, T ;
TEWORDT, L .
PHYSICAL REVIEW LETTERS, 1995, 74 (05) :793-796
[2]   PHYSICAL QUANTITIES IN NEARLY ANTIFERROMAGNETIC AND SUPERCONDUCTING STATES OF THE 2-DIMENSIONAL HUBBARD-MODEL AND COMPARISON WITH CUPRATE SUPERCONDUCTORS [J].
DAHM, T ;
TEWORDT, L .
PHYSICAL REVIEW B, 1995, 52 (02) :1297-1308
[3]   PHYSICAL QUANTITIES IN THE NORMAL AND D-WAVE SUPERCONDUCTING STATES OF THE HUBBARD-MODEL FOR YBA2CU3O7-Y [J].
DAHM, T ;
TEWORDT, L .
PHYSICA C, 1995, 246 (1-2) :61-72
[4]   THEORY OF MAGNETIC NEUTRON-SCATTERING FOR S-WAVE AND D-WAVE SUPERCONDUCTIVITY IN CUPRATES [J].
DAHM, T ;
RIECK, CT ;
TEWORDT, L ;
WERMBTER, S .
PHYSICA C, 1994, 223 (1-2) :179-188
[5]  
FRANCK JP, 1994, PHYSICAL PROPERTIES, V4, P189
[6]   TEMPERATURE DEPENDENCES OF THE RESISTIVITY AND HALL-COEFFICIENT OF UNTWINNED SINGLE-CRYSTAL YBA2CU3O7-DELTA AT CONSTANT VOLUME [J].
GINSBERG, DM ;
LEE, WC ;
STUPP, SE .
PHYSICAL REVIEW B, 1993, 47 (18) :12167-12171
[7]   MODEL CALCULATION FOR ELECTRONIC PAIRING IN COPPER OXIDES [J].
LENCK, S ;
CARBOTTE, JP .
PHYSICAL REVIEW B, 1992, 46 (22) :14850-14856
[8]   PHENOMENOLOGICAL MODEL OF NUCLEAR-RELAXATION IN THE NORMAL STATE OF YBA2CU3O7 [J].
MILLIS, AJ ;
MONIEN, H ;
PINES, D .
PHYSICAL REVIEW B, 1990, 42 (01) :167-178
[9]  
Scalapino D. J., 1995, Physics Reports, V250, P329, DOI 10.1016/0370-1573(94)00086-I
[10]   ISOTOPE EFFECT IN D-WAVE SUPERCONDUCTORS [J].
SCHUTTLER, HB ;
PAO, CH .
PHYSICAL REVIEW LETTERS, 1995, 75 (24) :4504-4507