Nonmagnetic impurity scattering in a d(x(2)-y(2)) superconductor near a Van Hove point: Zn versus Ni in the cuprates

被引：54

作者：

Fehrenbacher, R

机构：

[1] Max-Planck-Institut für Festköperforschung, Stuttgart, D-70569

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.77.1849

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the effect of nonmagnetic impurities in a d(x2-y2) superconductor with epsilon(F) close to a Van Hove singularity. It is shown that the nontrivial density of states (DOS) allows for resonant scattering already at intermediate potential strengths \u\ = 1-2 eV. The residual DOS at epsilon(F) and the T-c suppression rate are found to depend strongly on the carrier concentration. Quantitative agreement with experiments on Zn and Ni doped cuprates is obtained by adjusting a single parameter, u.

引用

页码：1849 / 1852

页数：4

共 31 条

[1]

ABRIKOSOV A, 1960, SOV PHYS JETP, V10, P593

[2] THEORY OF DIRTY SUPERCONDUCTORS [J].

ANDERSON, PW .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1959, 11 (1-2) :26-30

[3] EFFECT OF ZN IMPURITIES ON THE NORMAL-STATE HALL ANGLE IN SINGLE-CRYSTAL YBA2CU3-XZNXO7-DELTA [J].

CHIEN, TR ;

WANG, ZZ ;

ONG, NP .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :2088-2091

[4] KEY FEATURES IN THE MEASURED BAND-STRUCTURE OF BI2SR2CACU2O8+DELTA - FLAT BANDS AT E(F) AND FERMI-SURFACE NESTING [J].

DESSAU, DS ;

SHEN, ZX ;

KING, DM ;

MARSHALL, DS ;

LOMBARDO, LW ;

DICKINSON, PH ;

LOESER, AG ;

DICARLO, J ;

PARK, CH ;

KAPITULNIK, A ;

SPICER, WE .

PHYSICAL REVIEW LETTERS, 1993, 71 (17) :2781-2784

[5] MOMENTUM DEPENDENCE OF THE SUPERCONDUCTING GAP IN BI2SR2CACU2O8 [J].

DING, H ;

CAMPUZANO, JC ;

BELLMAN, AF ;

YOKOYA, T ;

NORMAN, MR ;

RANDERIA, M ;

TAKAHASHI, T ;

KATAYAMAYOSHIDA, H ;

MOCHIKU, T ;

KADOWAKI, K .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2784-2787

[6] PHENOMENOLOGICAL BCS THEORY OF THE HIGH-T-C CUPRATES [J].

FEHRENBACHER, R ;

NORMAN, MR .

PHYSICAL REVIEW LETTERS, 1995, 74 (19) :3884-3887

[7] GAP RENORMALIZATION IN DIRTY ANISOTROPIC SUPERCONDUCTORS - IMPLICATIONS FOR THE ORDER-PARAMETER OF THE CUPRATES [J].

FEHRENBACHER, R ;

NORMAN, MR .

PHYSICAL REVIEW B, 1994, 50 (05) :3495-3498

[8] HIGH FIELD MAGNETORESISTANCE AT LOW TEMPERATURES [J].

GERHARDTS, R ;

HAJDU, J .

ZEITSCHRIFT FUR PHYSIK, 1971, 245 (02) :126-+

[9] OCCURRENCE OF VANHOVE SINGULARITIES IN YBA2CU4O8 AND YBA2CU3O6.9 [J].

GOFRON, K ;

CAMPUZANO, JC ;

DING, H ;

GU, C ;

LIU, R ;

DABROWSKI, B ;

VEAL, BW ;

CRAMER, W ;

JENNINGS, G .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1993, 54 (10) :1193-1198

[10]

GORKOV LP, 1985, JETP LETT, V40, P1155

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