EVIDENCE FOR D(X2-Y2) PAIRING FROM THE MAGNETIC-FIELD MODULATION OF YBA2CU3O7-PB JOSEPHSON-JUNCTIONS

被引：336

作者：

WOLLMAN, DA ^{[1
]}

VANHARLINGEN, DJ ^{[1
]}

GIAPINTZAKIS, J ^{[1
]}

GINSBERG, DM ^{[1
]}

机构：

[1] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.74.797

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the magnetic field modulation of the critical current of YBCO-Au-Pb Josephson junctions fabricated on the a and b edges and straddling the a-b corners of YBCO single crystals. In corner junctions, the critical current drops sharply at zero applied field and increases as the field is increased in either direction, in sharp contrast to the Fraunhofer diffraction patterns observed for single edge junctions. This behavior signifies a sign change of the order parameter between the a and b directions, strong direct evidence that the superconducting pairing state of YBCO has dx2-y2 symmetry. © 1995 The American Physical Society.

引用

页码：797 / 800

页数：4

共 20 条

[1] PARAMAGNETIC MEISSNER EFFECT IN BI HIGH-TEMPERATURE SUPERCONDUCTORS
BRAUNISCH, W
KNAUF, N
KATAEV, V
NEUHAUSEN, S
GRUTZ, A
KOCK, A
RODEN, B
KHOMSKII, D
WOHLLEBEN, D
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (12) : 1908 - 1911
[2] PARAMAGNETIC MEISSNER EFFECT IN HIGH-TEMPERATURE SUPERCONDUCTORS
BRAUNISCH, W
KNAUF, N
BAUER, G
KOCK, A
BECKER, A
FREITAG, B
GRUTZ, A
KATAEV, V
NEUHAUSEN, S
RODEN, B
KHOMSKII, D
WOHLLEBEN, D
BOCK, J
PREISLER, E
[J]. PHYSICAL REVIEW B, 1993, 48 (06) : 4030 - 4042
[3] EVIDENCE FOR AN UNCONVENTIONAL SUPERCONDUCTING ORDER-PARAMETER IN YBA2CU3O6.9
BRAWNER, DA
OTT, HR
[J]. PHYSICAL REVIEW B, 1994, 50 (09): : 6530 - 6533
[4] INTERLAYER TUNNELING AND GAP ANISOTROPY IN HIGH-TEMPERATURE SUPERCONDUCTORS
CHAKRAVARTY, S
SUDBO, A
ANDERSON, PW
STRONG, S
[J]. SCIENCE, 1993, 261 (5119) : 337 - 340
[5] ELECTRONIC RAMAN-SCATTERING IN HIGH-T(C) SUPERCONDUCTORS - A PROBE OF DX2-Y2 PAIRING
DEVEREAUX, TP
EINZEL, D
STADLOBER, B
HACKL, R
LEACH, DH
NEUMEIER, JJ
[J]. PHYSICAL REVIEW LETTERS, 1994, 72 (03) : 396 - 399
[6] PHENOMENOLOGICAL THEORY OF THE PARAMAGNETIC MEISSNER EFFECT
DOMINGUEZ, D
JAGLA, EA
BALSEIRO, CA
[J]. PHYSICAL REVIEW LETTERS, 1994, 72 (17) : 2773 - 2776
[7] PRECISION-MEASUREMENTS OF THE TEMPERATURE-DEPENDENCE OF LAMBDA IN YBA2CU3O6.95 - STRONG EVIDENCE FOR NODES IN THE GAP FUNCTION
HARDY, WN
BONN, DA
MORGAN, DC
LIANG, RX
ZHANG, K
[J]. PHYSICAL REVIEW LETTERS, 1993, 70 (25) : 3999 - 4002
[8] EXPERIMENTAL-EVIDENCE FOR A D-WAVE PAIRING STATE IN YBA2CU3O7-Y FROM A STUDY OF YBA2CU3O7-Y/INSULATOR/PB JOSEPHSON TUNNEL-JUNCTIONS
IGUCHI, I
WEN, Z
[J]. PHYSICAL REVIEW B, 1994, 49 (17): : 12388 - 12391
[9] OBSERVATION OF A-B PLANE GAP ANISOTROPY IN BI2SR2CACU2O8 WITH A LOW-TEMPERATURE SCANNING TUNNELING MICROSCOPE
KANE, J
CHEN, Q
NG, KW
TAO, HJ
[J]. PHYSICAL REVIEW LETTERS, 1994, 72 (01) : 128 - 131
[10] RESONATING VALENCE BONDS AND D-WAVE SUPERCONDUCTIVITY
KOTLIAR, G
[J]. PHYSICAL REVIEW B, 1988, 37 (07): : 3664 - 3666

← 1 2 →