COHERENT VORTEX MOTION IN SUPERCONDUCTING NANOBRIDGES BASED ON YBACUO THIN-FILMS

被引：15
作者：
PEDYASH, MV
GERRITSMA, GJ
BLANK, DHA
ROGALLA, H
机构：
[1] Department of Applied Physics, University of Twente, AE Enschede, P.O.Box 217
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期
关键词：
14;
D O I：
10.1109/77.402823
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：
Submicron bridges in superconducting YBaCuO thin films with typical linear dimensions of about 100nm have been fabricated. Experimental current-voltage characteristics of these structures are in reasonable agreement with numerical simulations based on true two dimensional viscous vortex motion and indicate the effect of switching from a single path motion at low transport currents to multiple paths at higher currents. The value of the viscous drag coefficient of this vortex motion is found to be about 10(-9) kg/m . sec, which is about two orders of magnitude lower than one estimated from the Bardeen-Stephen model. Critical current densities in the investigated nanobridges are up to 5.10(10)A/m(2) at T=4.2K. The critical current as a function of the width of the bridges indicates the dominating role of edge pinning.
引用
收藏
页码：1387 / 1390
页数：4
相关论文
共 16 条
  • [1] IMPROVED AQUEOUS ETCHANT FOR HIGH T(C) SUPERCONDUCTOR MATERIALS
    ASHBY, CIH
    MARTENS, J
    PLUT, TA
    GINLEY, DS
    PHILLIPS, JM
    [J]. APPLIED PHYSICS LETTERS, 1992, 60 (17) : 2147 - 2149
  • [2] Aslamazov L.G., 1975, SOV PHYS JETP, V41, P381
  • [3] ASLAMAZOV LG, 1975, ZH EKSP TEOR FIZ+, V68, P766
  • [4] THEORY OF MOTION OF VORTICES IN SUPERCONDUCTORS
    BARDEEN, J
    STEPHEN, MJ
    [J]. PHYSICAL REVIEW, 1965, 140 (4A): : 1197 - +
  • [5] PREPARATION OF YBACUO THIN-FILMS ON VARIOUS SUBSTRATES BY LASER ABLATION - INFLUENCE OF THE SUBSTRATE-TEMPERATURE
    BLANK, DHA
    ADELERHOF, DJ
    FLOKSTRA, J
    ROGALLA, H
    [J]. PHYSICA C, 1990, 167 (3-4): : 423 - 432
  • [6] DENIVELLE MJM, 1993, THESIS U TWENTE ENSC
  • [7] HIGH CRITICAL CURRENT-DENSITY ULTRATHIN YBA2CU3OX FILMS MADE BY A MODIFIED RF-MAGNETRON SPUTTERING TECHNIQUE
    GAO, J
    HAUSER, B
    ROGALLA, H
    [J]. JOURNAL OF APPLIED PHYSICS, 1990, 67 (05) : 2512 - 2515
  • [8] MICROWAVE RESPONSE OF YBACUO THIN-FILM DAYEM BRIDGES
    GIJS, MAM
    JANSEN, RJE
    [J]. APPLIED PHYSICS LETTERS, 1990, 56 (15) : 1484 - 1486
  • [9] GOLOVASHKIN AI, 1978, ZH EKSP TEOR FIZ+, V74, P214
  • [10] GOLOVASHKIN AI, 1978, ZH EKSP TEOR FIZ, V47, P110
12