PAIRING SYMMETRY AND FLUX-QUANTIZATION IN A TRICRYSTAL SUPERCONDUCTING RING OF YBA2CU3O7-DELTA

被引：946

作者：

TSUEI, CC ^{[1
]}

KIRTLEY, JR ^{[1
]}

CHI, CC ^{[1
]}

YUJAHNES, LS ^{[1
]}

GUPTA, A ^{[1
]}

SHAW, T ^{[1
]}

SUN, JZ ^{[1
]}

KETCHEN, MB ^{[1
]}

机构：

[1] IBM CORP, THOMAS J WATSON RES CTR, YORKTOWN HTS, NY 10598 USA

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.73.593

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used the concept of flux quantization in superconducting YBa2Cu3O7-delta rings with 0, 2, and 3 grain-boundary Josephson junctions to test the pairing symmetry in high-T(c) superconductors. The magnetic flux threading these rings at 4.2 K is measured by employing a scanning superconducting quantum interference device microscope. Spontaneous magnetization of a half magnetic flux quantum, PHI0/2 = h/4e has been observed in the 3-junction ring, but not in the 2-junction rings. These results are consistent with d-wave pairing symmetry.

引用

页码：593 / 596

页数：4

共 50 条

[1] USE OF TRICRYSTAL JUNCTIONS TO PROBE THE PAIRING STATE SYMMETRY OF YBA2CU3O7-DELTA
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[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (12) : 2347 - 2350
[2] MACROSCOPIC FLUX-QUANTIZATION AND MICROWAVE EXCITATION IN SINGLE-CRYSTAL YBA2CU3O7-DELTA
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[3] FLUX EXPULSION AND PENETRATION IN SUPERCONDUCTING YBA2CU3O7-DELTA
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[4] FLUX-QUANTIZATION IN SINGLE-CRYSTAL YBA2CU3O7-DELTA AS A FUNCTION OF DC AND MICROWAVE MAGNETIC-FIELDS
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[5] MOCVD OF SUPERCONDUCTING YBA2CU3O7-DELTA
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[6] THE SUPERCONDUCTING STATE OF YBA2CU3O7-DELTA
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[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1992, 89 (1-2) : 197 - 206
[7] SPIN EXCITATIONS AND PAIRING GAPS IN THE SUPERCONDUCTING STATE OF YBA2CU3O7-DELTA
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[J]. PHYSICAL REVIEW B, 1990, 41 (10): : 6297 - 6305
[8] OBSERVATION OF FLUX-FLOW IN SUPERCONDUCTING YBA2CU3O7-DELTA FILMS
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[9] ACOUSTOEMISSION IN THE SUPERCONDUCTING CERAMIC YBA2CU3O7-DELTA
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[10] DEFECT STRUCTURE OF SUPERCONDUCTING YBA2CU3O7-DELTA
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[J]. JOURNAL OF ELECTRON MICROSCOPY TECHNIQUE, 1988, 8 (03): : 285 - 295

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