Design and applications of a scanning SQUID microscope

被引：43

作者：

Kirtley, JR ^{[1
]}

Ketchen, MB ^{[1
]}

Tsuei, CC ^{[1
]}

Sun, JZ ^{[1
]}

Gallagher, WJ ^{[1
]}

YuJahnes, LS ^{[1
]}

Gupta, A ^{[1
]}

Stawiasz, KG ^{[1
]}

Wind, SJ ^{[1
]}

机构：

[1] COOPER & DUNHAM LLP, NEW YORK, NY 10036 USA

来源：

IBM JOURNAL OF RESEARCH AND DEVELOPMENT | 1995年 / 39卷 / 06期

关键词：

D O I：

10.1147/rd.396.0655

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The scanning SQUID (Superconducting Quantum Interference Device) microscope is an extremely sensitive instrument for imaging local magnetic fields. We describe one such instrument which combines a novel pivoting lever mechanism for coarse-scale imaging with a piezoelectric tube scanner for fine-scale scans. The magnetic field sensor is an integrated miniature SQUID magnetometer. This instrument has a demonstrated magnetic field sensitivity of <10(-6) gauss/root Hz at a spatial resolution of similar to 10 mu m. The design and operation of this scanning SQUID microscope are described, and several illustrations of the capabilities of this technique are presented. The absolute calibration of this instrument with an ideal point source, a single vortex trapped in a superconducting film, is shown. The use of this instrument for the first observation of half-integer flux quanta, in tricrystal thin-film rings of YBa2Cu3O7-8, is described. The half-integer flux quantum effect is a general test of the symmetry of the superconducting order parameter. One such test rules out symmetry-independent mechanisms for the half-integer flux quantum effect, and proves that the order parameter in YBa2Cu3O7-8 has lobes and nodes consistent with d-wave symmetry.

引用

页码：655 / 668

页数：14

共 35 条

[11] VORTICES WITH HALF MAGNETIC-FLUX QUANTA IN HEAVY-FERMION SUPERCONDUCTORS
GESHKENBEIN, VB
LARKIN, AI
BARONE, A
[J]. PHYSICAL REVIEW B, 1987, 36 (01): : 235 - 238
[12] DIRECT OBSERVATION OF MAGNETIC-FLUX BEHAVIOR IN HIGH-TC YBA2CU3OX SUPERCONDUCTORS USING THE MAGNETOOPTICAL EFFECT OF IRON-GARNET FILMS
GOTOH, S
KOSHIZUKA, N
[J]. PHYSICA C, 1991, 176 (1-3): : 300 - 316
[13] REAL-TIME OBSERVATION OF VORTEX LATTICES IN A SUPERCONDUCTOR BY ELECTRON-MICROSCOPY
HARADA, K
MATSUDA, T
BONEVICH, J
IGARASHI, M
KONDO, S
POZZI, G
KAWABE, U
TONOMURA, A
[J]. NATURE, 1992, 360 (6399) : 51 - 53
[14] OCTAGONAL WASHER dc SQUIDs AND INTEGRATED SUSCEPTOMETERS FABRICATED IN A PLANARIZED SUB-mu m Nb - AlOx - Nb TECHNOLOGY
Ketchen, M.
Pearson, D. J.
Stawiasz, K.
Hu, C-K.
Kleinsasser, A. W.
Brunner, T.
Cabral, C.
Chandrashelchar, V.
Jaso, M.
Manny, M.
Stein, K.
Bhushan, M.
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) : 1795 - 1799
[15] HIGH-RESOLUTION SCANNING SQUID MICROSCOPE
KIRTLEY, JR
KETCHEN, MB
STAWIASZ, KG
SUN, JZ
GALLAGHER, WJ
BLANTON, SH
WIND, SJ
[J]. APPLIED PHYSICS LETTERS, 1995, 66 (09) : 1138 - 1140
[16] SYMMETRY OF THE ORDER-PARAMETER IN THE HIGH-T-C SUPERCONDUCTOR YBA2CU3O7-DELTA
KIRTLEY, JR
TSUEI, CC
SUN, JZ
CHI, CC
YUJAHNES, LS
GUPTA, A
RUPP, M
KETCHEN, MB
[J]. NATURE, 1995, 373 (6511) : 225 - 228
[17] LEVI BG, 1993, PHYSICS TODAY MAY, P17
[18] High resolution imaging susceptometer
Ma, Y.P.
Thomas, I.M.
Lauder, A.
Wikswo Jr., J.P.
[J]. IEEE Transactions on Applied Superconductivity, 1993, 3 (1 pt 4) : 1941 - 1944
[19] ONE-DIMENSIONAL MAGNETIC-FLUX MICROSCOPE BASED ON THE DC SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE
MATHAI, A
SONG, D
GIM, Y
WELLSTOOD, FC
[J]. APPLIED PHYSICS LETTERS, 1992, 61 (05) : 598 - 600
[20] EXPERIMENTAL PROOF OF A TIME-REVERSAL-INVARIANT ORDER-PARAMETER WITH A PI-SHIFT IN YBA2CU3O7-DELTA
MATHAI, A
GIM, Y
BLACK, RC
AMAR, A
WELLSTOOD, FC
[J]. PHYSICAL REVIEW LETTERS, 1995, 74 (22) : 4523 - 4526

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