TUNNELING EVIDENCE OF STRONG COOPER-PAIR-BREAKING NEAR TC IN CUPRATE SUPERCONDUCTORS

被引：32

作者：

WOLF, EL

TAO, HJ

SUSLA, B

机构：

[1] CHINESE ACAD SCI, INST PHYS, BEIJING, PEOPLES R CHINA

[2] POZNAN TECH UNIV, DEPT PHYS, PL-60965 POZNAN, POLAND

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 77卷 / 07期

关键词：

D O I：

10.1016/0038-1098(91)90732-B

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The superconductive tunneling density of states obtained from conventional metal film-insulator tunnel junctions on cleaved (ab) basal planes of single crystal Bi2Sr2CaCu2O8+y (2212) reveals a rising pair breaking rate GAMMA-(T) near T(c), as predicted by Lee and Read. We obtain GAMMA-(T) = 2.3 kT(c)(T/T(c))3, which confirms a recent calculation by Coffey and also recent tunneling results of Takada et al on YBa2Cu3O6. This implies a pair lifetime at T(c) of about 40 fs in 2212. The results indicate that the T3 pairbreaking near T(c) is an intrinsic feature of superconductivity in the cuprate planes.

引用

收藏

页码：519 / 523

页数：5

相关论文

共 20 条

[1] ZEEMAN EFFECT ON MAGNETORESISTANCE IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

ARONOV, AG ;

HIKAMI, S ;

LARKIN, AI .

PHYSICAL REVIEW LETTERS, 1989, 62 (08) :965-968

[2] SPIN DYNAMICS AT OXYGEN SITES IN YBA2CU3O7 - COMMENT [J].

COFFEY, L .

PHYSICAL REVIEW LETTERS, 1990, 64 (09) :1071-1071

[3] DIRECT MEASUREMENT OF QUASIPARTICLE-LIFETIME BROADENING IN A STRONG-COUPLED SUPERCONDUCTOR [J].

DYNES, RC ;

NARAYANAMURTI, V ;

GARNO, JP .

PHYSICAL REVIEW LETTERS, 1978, 41 (21) :1509-1512

[4] ENERGY GAPS IN BI-SR-CA-CU-O AND BI-SR-CU-O SYSTEMS BY ELECTRON-TUNNELING [J].

EKINO, T ;

AKIMITSU, J .

PHYSICAL REVIEW B, 1989, 40 (10) :6902-6911

[5] TUNNELING SPECTROSCOPY OF THE 80-K SUPERCONDUCTING PHASE OF THE BI-SR-CA-CU-O SYSTEM [J].

IKUTA, H ;

MAEDA, A ;

UCHINOKURA, K ;

TANAKA, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1988, 27 (06) :L1038-L1040

[6] THEORY OF NUCLEAR-RELAXATION IN SUPERCONDUCTING HIGH-TC OXIDES [J].

KOYAMA, T ;

TACHIKI, M .

PHYSICAL REVIEW B, 1989, 39 (04) :2279-2292

[7] QUASI-PARTICLE TUNNELING IN BI-SR-CA-CU-O THIN-FILMS [J].

KUSSMAUL, A ;

MOODERA, JS ;

ROESLER, GM ;

TEDROW, PM .

PHYSICAL REVIEW B, 1990, 41 (01) :842-845

[8] SYSTEMATIC EFFECTS IN THIN-FILM TUNNEL-JUNCTIONS OF YBA2CU3O7-DELTA [J].

LEE, M ;

NAITO, M ;

KAPITULNIK, A ;

BEASLEY, MR .

SOLID STATE COMMUNICATIONS, 1989, 70 (04) :449-452

[9] WHY IS TC OF THE OXIDE SUPERCONDUCTORS SO LOW [J].

LEE, PA ;

READ, N .

PHYSICAL REVIEW LETTERS, 1987, 58 (25) :2691-2694

[10] TEMPERATURE-DEPENDENCE OF THE RESISTIVITY TENSOR IN SUPERCONDUCTING BI2SR2.2CA0.8CU2O8 CRYSTALS [J].

MARTIN, S ;

FIORY, AT ;

FLEMING, RM ;

SCHNEEMEYER, LF ;

WASZCZAK, JV .

PHYSICAL REVIEW LETTERS, 1988, 60 (21) :2194-2197