LOW-NOISE HIGH-T-c DC SQUIDS AT 77 K

被引：0
|
作者：
DiIorio, M. S. [1 ]
Yoshizumi, S. [1 ]
Yang, K-Y. [1 ]
Maung, M. [1 ]
Zhang, J. [1 ]
Power, B. [1 ]
机构：
[1] Biomagnet Technol, 9727 Pacific Hts Blvd, San Diego, CA 92121 USA
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have fabricated low-noise dc SQUIDs using a reproducibles uperconductor-normal metal-superconductor(SNS) step-edge technique. The superconductor is YBa2Cu3O7-x and the normal metal is either Ag or a Ag-Au alloy. At 77 K, the energy sensitivity for the SQUIDs with the smallest inductance, L = 12 pH, reaches below 9 x 10(-30) J/Hz at 1 Hz. The energy sensitivity for SQUIDs with L = 70 pH, is 5 x 10(-29) J/Hz at 1 Hz. These measured noise values are sufficient for many practical applications. The larger SQUID inductance is also adequate to permit coupling to multi-turn input coils. Thin-film input coils with as many as 30 turns have been developed. Critical current densities for the multi-turn coils routinely exceed 10(6) A/cm(2) at 77 K.
引用
收藏
页码：2011 / 2017
页数：7
相关论文
共 50 条
  • [1] Progress in high-T-c dc SQUIDs
    Clarke, J
    Dantsker, E
    Kleiner, R
    Koelle, D
    Miklich, AH
    Ludwig, F
    [J]. CHINESE JOURNAL OF PHYSICS, 1996, 34 (02) : 352 - 363
  • [2] LOW-NOISE THIN-FILM TIBACACUO DC SQUIDS OPERATED AT 77-K
    KOCH, RH
    GALLAGHER, WJ
    BUMBLE, B
    LEE, WY
    [J]. APPLIED PHYSICS LETTERS, 1989, 54 (10) : 951 - 953
  • [3] HIGH-T-C JOSEPHSON JUNCTIONS AND DC SQUIDS
    Seidel, P.
    Heinz, E.
    Schmidl, F.
    Zach, K.
    Koehler, H. -J
    Doerrer, L.
    Linzen, S.
    Koehler, T.
    Michalke, W.
    Manzel, M.
    Steinbeiss, E.
    Bruchlos, H.
    Kley, E. -B.
    Fuchs, H. -J.
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) : 2353 - 2356
  • [4] High-T-c SQUIDs
    Clarke, J
    [J]. CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 1997, 2 (01): : 3 - 10
  • [5] LOW-NOISE TUNNEL JUNCTION DC SQUIDS
    CROMAR, MW
    CARELLI, P
    [J]. APPLIED PHYSICS LETTERS, 1981, 38 (09) : 723 - 725
  • [6] ULTRA LOW-NOISE NB DC SQUIDS
    VOSS, RF
    LAIBOWITZ, RB
    BROERS, AN
    RAIDER, SI
    KNOEDLER, CM
    VIGGIANO, JM
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 1981, 17 (01) : 395 - 399
  • [7] WELL COUPLED, LOW-NOISE, DC SQUIDS
    MUHLFELDER, B
    BEALL, JA
    CROMAR, MW
    ONO, RH
    JOHNSON, WW
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 1985, 21 (02) : 427 - 429
  • [8] Temperature dependence of the effective sensing area of high-T-c dc SQUIDs
    terBrake, HJM
    Aarnink, WAM
    vandenBosch, PJ
    Hilgenkamp, JWM
    Flokstra, J
    Rogalla, H
    [J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1997, 10 (07): : 512 - 515
  • [9] High-T-c SQUIDs on silicon substrates
    Seidel, P
    Linzen, S
    Schmidl, F
    Cihar, R
    [J]. JOURNAL DE PHYSIQUE IV, 1996, 6 (C3): : 361 - 365
  • [10] ULTRA LOW-NOISE ALL NIOBIUM DC-SQUIDS
    DAALMANS, GM
    BAR, L
    BOMMEL, FR
    KRESS, R
    UHL, D
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) : 2997 - 3000
12345