DC SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE UTILIZING THE HIGH-TC STEP-EDGE JUNCTION

被引：3

作者：

ENPUKU, K

UDOMOTO, J

KISU, T

ERAMI, A

KUROMIZU, Y

YOSHIDA, K

机构：

[1] Department of Electronics, Kyushu University, Fukuoka

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1991年 / 30卷 / 6B期

关键词：

DC SQUID; STEP-EDGE JUNCTION; WEAK LINK; HIGH-TC SUPERCONDUCTOR; YBACUO FILM;

D O I：

10.1143/JJAP.30.L1121

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An artificial step-edge junction for developing the high T(c) weak links is presented. The step-edge junction is fabricated by using the step edge of the double layer of the epitaxial YBaCuO films. The dc superconducting quantum interference device (SQUID) made of the junction shows a clear voltage-vs-flux (V - PHI) relation up to T = 81.3 K. The voltage modulation depth DELTA-V of the V - PHI-relation is DELTA-V = 1.6-mu-V at T = 77 K. A preliminary experiment shows that the magnetic-flux noise of the SQUID at T = 77 K is, at most, PHI-n = 4.4 x 10(-4) PHI-0/square-root Hz at f = 10 Hz. These results show the promising properties of the step-edge junction for the weak link of high T(c) superconductors.

引用

收藏

页码：L1121 / L1124

页数：4

相关论文

共 11 条

[1] EFFECT OF DAMPING RESISTANCE ON VOLTAGE VERSUS FLUX RELATION OF A DC SQUID WITH LARGE INDUCTANCE AND CRITICAL CURRENT [J].

ENPUKU, K ;

SUEOKA, K ;

YOSHIDA, K ;

IRIE, F .

JOURNAL OF APPLIED PHYSICS, 1985, 57 (05) :1691-1697

[2] NOISE AND DC CHARACTERISTICS OF THIN-FILM BI-SR-CA-CU-OXIDE DC SQUIDS [J].

FACE, DW ;

GRAYBEAL, JM ;

ORLANDO, TP ;

RUDMAN, DA .

APPLIED PHYSICS LETTERS, 1990, 56 (15) :1493-1495

[3] MAGNETIC-FLUX NOISE IN THIN-FILM RINGS OF YBA2CU3O7-DELTA [J].

FERRARI, MJ ;

JOHNSON, M ;

WELLSTOOD, FC ;

CLARKE, J ;

ROSENTHAL, PA ;

HAMMOND, RH ;

BEASLEY, MR .

APPLIED PHYSICS LETTERS, 1988, 53 (08) :695-697

[4] LOW-NOISE YBA2CU3O7-DELTA GRAIN-BOUNDARY JUNCTION DC SQUIDS [J].

GROSS, R ;

CHAUDHARI, P ;

KAWASAKI, M ;

KETCHEN, MB ;

GUPTA, A .

APPLIED PHYSICS LETTERS, 1990, 57 (07) :727-729

[5] PLANAR COUPLING SCHEME FOR ULTRA LOW-NOISE DC SQUIDS [J].

JAYCOX, JM ;

KETCHEN, MB .

IEEE TRANSACTIONS ON MAGNETICS, 1981, 17 (01) :400-403

[6] A NEW ANODE-ELECTRODE STRUCTURE FOR SPUTTER DEPOSITION OF HIGH-QUALITY Y-BA-CU-O THIN-FILMS [J].

KISU, T ;

ARIYOSHI, Y ;

ENPUKU, K ;

YOSHIDA, K ;

TAKEO, M ;

YAMAFUJI, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1989, 28 (08) :L1385-L1388

[7] QUANTUM INTERFERENCE DEVICES MADE FROM SUPERCONDUCTING OXIDE THIN-FILMS [J].

KOCH, RH ;

UMBACH, CP ;

CLARK, GJ ;

CHAUDHARI, P ;

LAIBOWITZ, RB .

APPLIED PHYSICS LETTERS, 1987, 51 (03) :200-202

[8] LOW-NOISE THIN-FILM TIBACACUO DC SQUIDS OPERATED AT 77-K [J].

KOCH, RH ;

GALLAGHER, WJ ;

BUMBLE, B ;

LEE, WY .

APPLIED PHYSICS LETTERS, 1989, 54 (10) :951-953

[9] ALL HIGH-TC EDGE JUNCTIONS AND SQUIDS [J].

LAIBOWITZ, RB ;

KOCH, RH ;

GUPTA, A ;

KOREN, G ;

GALLAGHER, WJ ;

FOGLIETTI, V ;

OH, B ;

VIGGIANO, JM .

APPLIED PHYSICS LETTERS, 1990, 56 (07) :686-688

[10] SUPERCONDUCTING WEAK LINKS [J].

LIKHAREV, KK .

REVIEWS OF MODERN PHYSICS, 1979, 51 (01) :101-159