MICROSTRUCTURE OF EDGE-TYPE JOSEPHSON-JUNCTIONS WITH PRBA2CU3O7-X BARRIER LAYER

被引：6

作者：

LEBEDEV, OI ^{[1
]}

VASILIEV, AL ^{[1
]}

KISELEV, NA ^{[1
]}

MAZO, LA ^{[1
]}

GAPONOV, SV ^{[1
]}

PAVELIEV, DG ^{[1
]}

STRIKOVSKY, MD ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST APPL PHYS,N NOVGOROD 603600,USSR

来源：

PHYSICA C | 1992年 / 198卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90202-N

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

HREM investigations of edge Josephson junctions (EJJ) with PrBa2Cu3O7-x barrier layer (PB) were performed. All layers (superconducting YBa2Cu3O7-x (Y1) and (Y2), insulating PrBa2Cu3O7-x (PI) and barrier (PB) were obtained by laser ablation. The edges were formed by ion sputtering using a fotoresist mask. EJJ shows Josephson conductivity at T(c) = 77 K, giving j(c) = 10(4) A/cm2 at U(c) = 50-mu-V. Cross-sectional images show that Y1, PI and PB layers are single crystalline with the c-axis normal to the substrate surface. The Y2 layer in the regions of a multilayered structure is polycrystalline. The PB/Yl interface is characterised by APB line boundaries; it is inclined to the substrate by 20-35-degrees.

引用

页码：278 / 286

页数：9

共 8 条

[1] NOVEL ALL-HIGH TC EPITAXIAL JOSEPHSON JUNCTION [J].

CHIN, DK ;

VANDUZER, T .

APPLIED PHYSICS LETTERS, 1991, 58 (07) :753-755

[2] CONTROLLED PREPARATION OF ALL HIGH-TC SNS-TYPE EDGE JUNCTIONS AND DC SQUIDS [J].

GAO, J ;

AARNINK, WAM ;

GERRITSMA, GJ ;

ROGALLA, H .

PHYSICA C, 1990, 171 (1-2) :126-130

[3] ALL HIGH-TC EDGE-GEOMETRY WEAK LINKS UTILIZING Y-BA-CU-O BARRIER LAYERS [J].

HUNT, BD ;

FOOTE, MC ;

BAJUK, LJ .

APPLIED PHYSICS LETTERS, 1991, 59 (08) :982-984

[4] MICROSTRUCTURE OF EPITAXIAL YBA2CU3O7 FILMS ON STEP-EDGE SRTIO3 SUBSTRATES [J].

JIA, CL ;

KABIUS, B ;

URBAN, K ;

HERRMAN, K ;

CUI, GJ ;

SCHUBERT, J ;

ZANDER, W ;

BRAGINSKI, AI ;

HEIDEN, C .

PHYSICA C, 1991, 175 (5-6) :545-554

[5] 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

[6]

VASILIEV AL, 1987, KSF, V7, P59

[7]

VASILIEV AL, 1990, SUPERCOND PHYS CHEM, V3, P557

[8] HREM INVESTIGATIONS OF DEFECTS IN SINTERED YBA2CU3O7-DELTA [J].

ZANDBERGEN, HW ;

THOMAS, G .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1988, 107 (02) :825-843

← 1 →