MICROWAVE RF SQUID INTEGRATED INTO A PLANAR YBA2CU3O7 RESONATOR

被引：38

作者：

ZHANG, Y

MUCK, M

BODE, M

HERRMANN, K

SCHUBERT, J

ZANDER, W

BRAGINSKI, AI

HEIDEN, C

机构：

[1] Institute of Thin Film and Ion Technology, Research Center Jülich (KFA)

来源：

APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 18期

关键词：

D O I：

10.1063/1.107011

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We fabricated and characterized microwave rf SQUIDs integrated into a planar, S-shaped lambda/2 microstrip resonator. This 3 GHz resonator was fabricated from a pulsed-laser-deposited YBa2Cu3O7 epitaxial film. The SQUID structures incorporated double step-edge junctions and had a loop inductance of 120 pH. Such unoptimized SQUIDs operated between 4.2 and 85 K with dV/d-PHI = 18-20-mu-V/PHI-0 at 77 K. At that temperature, the energy resolution of (8 +/- 2) X 10(-29) J/Hz above 0.1 Hz (in the best samples) was limited by the white noise, S(PHI)1/2 = (7 +/- 1) X 10(-5) PHI-0/Hz1/2. Optimization may increase dV/d-PHI and improve the energy resolution by up to an order of magnitude.

引用

页码：2303 / 2305

页数：3

共 13 条

[1]

Buhrman R. A., 1979, IEEE T MAG, V13, P879

[2] YBA2CU3O7 STEP-EDGE RF SQUID BIASED AT 10 GHZ [J].

DALY, KP ;

BURCH, J ;

COONS, S ;

HU, R .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :3066-3069

[3]

FRIEDL G, 1992, IN PRESS 4TH P INT S

[4] CHARACTERIZATION OF YBA2CU3O7 STEP-EDGE JOSEPHSON-JUNCTIONS [J].

HERRMAN, K ;

ZHANG, Y ;

MUCK, HM ;

SCHUBERT, J ;

ZANDER, W ;

BRAGINSKI, AI .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1991, 4 (11) :583-586

[5] INTRINSIC FLUCTUATIONS IN A SUPERCONDUCTING RING CLOSED WITH A JOSEPHSON JUNCTION [J].

KURKIJARVI, J .

PHYSICAL REVIEW B-SOLID STATE, 1972, 6 (03) :832-+

[6] NOISE IN SUPERCONDUCTING QUANTUM FLUX DETECTOR [J].

KURKIJARVI, J .

JOURNAL OF APPLIED PHYSICS, 1973, 44 (08) :3729-3733

[7] PLANAR MICROWAVE RF SQUID GRADIOMETER [J].

MUCK, M ;

DIEHL, D ;

HEIDEN, C .

CRYOGENICS, 1990, 30 (12) :1149-1151

[8]

MUCK M, 1989, 2ND INT SUP EL C ISE, P199

[9]

MUCK M, IN PRESS REV SCI INS

[10]

MUCK M, IN PRESS APPL PHYS A

← 1 2 →