CORRELATIONS BETWEEN THE CRITICAL CURRENT-DENSITY AND MICROWAVE SURFACE IMPEDANCE OF EPITAXIAL YBA2CU3O7-DELTA FILMS

被引：9

作者：

GLADUN, A

CHERPAK, N

GIPPIUS, A

HENSEN, S

LENKENS, M

MULLER, G

ORBACH, S

PIEL, H

机构：

[1] KHARKOV RADIOPHYS & ELECTR INST,KHARKOV,UKRAINE,USSR

[2] INST FESTKOPERPHYS & WERKSTOFFORSCH DRESDEN,O-8027 DRESDEN,GERMANY

[3] MV LOMONOSOV STATE UNIV,MOSCOW 117234,USSR

来源：

CRYOGENICS | 1992年 / 32卷 / 11期

关键词：

HIGH T(C) SUPERCONDUCTORS; THIN FILMS; CRITICAL CURRENTS;

D O I：

10.1016/0011-2275(92)90030-E

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The microwave surface impedance and critical current density of epitaxially grown YBa2Cu3O7-delta films prepared by different techniques on MgO, SrTiO3, LaAlO3 and NdGaO3 have been measured and the correlations between them are discussed. At 77 K, in most cases, the highest J(c) values have been achieved for films with the lowest surface resistance R(s). At 4 K the surface impedance still decreases with improved sample perfection, while the critical current seems to be independent of R(s). The observed critical currents are three to five times lower than the depairing currents.

引用

页码：1071 / 1075

页数：5

共 17 条

[1]

ASLAMAZOV LG, 1983, ZH EKSP TEOR FIZ+, V84, P2216

[2]

BEHNER H, 1990, C HTSL GARMISCH PART, P651

[3] LOW-TEMPERATURE PREPARATION OF SUPERCONDUCTING YBA2CU3O7-DELTA FILMS ON SI, MGO, AND SRTIO3 BY THERMAL COEVAPORATION [J].

BERBERICH, P ;

TATE, J ;

DIETSCHE, W ;

KINDER, H .

APPLIED PHYSICS LETTERS, 1988, 53 (10) :925-926

[4] EFFECT OF SMALL CHANGES IN COMPOSITION ON THE ELECTRICAL AND STRUCTURAL-PROPERTIES OF YBA2CU3O7 THIN-FILMS [J].

CHEW, NG ;

GOODYEAR, SW ;

EDWARDS, JA ;

SATCHELL, JS ;

BLENKINSOP, SE ;

HUMPHREYS, RG .

APPLIED PHYSICS LETTERS, 1990, 57 (19) :2016-2018

[5]

CLAASSEN HJ, 1991, REV SCI INSTRUM, V62, P296

[6] OBSERVATION OF ULTRAHIGH CRITICAL CURRENT DENSITIES IN HIGH-TC SUPERCONDUCTING BRIDGE CONSTRICTIONS [J].

JIANG, H ;

HUANG, Y ;

HOW, H ;

ZHANG, S ;

VITTORIA, C ;

WIDOM, A ;

CHRISEY, DB ;

HORWITZ, JS ;

LEE, R .

PHYSICAL REVIEW LETTERS, 1991, 66 (13) :1785-1788

[7] MAGNETIC SCREENING BY A THIN SUPERCONDUCTING SURFACE-LAYER [J].

KITTEL, C ;

FAHY, S ;

LOUIE, SG .

PHYSICAL REVIEW B, 1988, 37 (01) :642-643

[8] MILLIMETER WAVE SURFACE-RESISTANCE OF EPITAXIALLY GROWN YBA2CU3O7-X THIN-FILMS [J].

KLEIN, N ;

MULLER, G ;

PIEL, H ;

ROAS, B ;

SCHULTZ, L ;

KLEIN, U ;

PEINIGER, M .

APPLIED PHYSICS LETTERS, 1989, 54 (08) :757-759

[9] MILLIMETER AND SUBMILLIMETER WAVE SURFACE IMPEDANCE OF YBA2CU3O7-DELTA THIN-FILMS WITH REDUCED LOW-TEMPERATURE ABSORPTION [J].

KLEIN, N ;

DAHNE, U ;

POPPE, U ;

SOLTNER, H ;

KABIUS, B ;

URBAN, K ;

SCHUBERT, J ;

ZANDER, W ;

ORBACH, S ;

HENSEN, S ;

MULLER, G ;

PIEL, H ;

GORSHUNOV, BP ;

KOZLOV, GV ;

LEBEDEV, SP ;

VOLKOV, AA .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1991, 185 :1777-1778

[10] RESISTIVE LOSS AT 10 GHZ IN C-AXIS-ALIGNED INSITU-GROWN YBA2CU3O7 FILMS [J].

LADERMAN, SS ;

TABER, RC ;

JACOWITZ, RD ;

MOLL, JL ;

EOM, CB ;

HYLTON, TL ;

MARSHALL, AF ;

GEBALLE, TH ;

BEASLEY, MR .

PHYSICAL REVIEW B, 1991, 43 (04) :2922-2933

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