Vortex phase diagram and vortex dynamics at low temperature in a thick a-MgxB1-x film

被引：0
|
作者：
Okuma, S. [1 ]
Kohara, M. [1 ]
机构：
[1] Tokyo Inst Technol, Res Ctr Low Temp Phys, Meguro Ku, Tokyo 152, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 460卷
关键词：
phase diagram; flux flow; fluctuations; quantum liquid;
D O I：
10.1016/j.physc.2007.03.313
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the equilibrium vortex phase diagram and vortex dynamics at low temperature T in a thick amorphous (a-)MgxB1-x film based on the measurements of the dc resistivity p and time (t)-dependent component of the flux-flow voltage, delta V(t), respectively. Both rho(T) in perpendicular fields and the vortex phase diagram are qualitatively similar to those for the a-MoxSi1-x films, in which evidence for the quantum-vortex-liquid (QVL) phase has been obtained. In either material system we observe anomalous vortex flow with the asymmetric distribution of delta V(t) in the QVL phase, suggesting that the anomalous flow is a universal phenomenon commonly observed for disordered amorphous films, independent of material. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1276 / 1277
页数：2
相关论文
共 50 条
  • [31] Unusual vortex dynamics in the quantum-liquid phase of a-MoxSi1-x films
    Okuma, S
    PRAMANA-JOURNAL OF PHYSICS, 2006, 66 (01): : 261 - 269
  • [32] Electronic transport and vortex dynamics in the low-temperature liquid phase of an ultrathin Corbino-disk
    Okuma, S.
    Kishimoto, T.
    Kainuma, K.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2006, 437-38 : 247 - 250
  • [33] Vortex dynamics detected by voltage noise in the quantum-liquid phase of thick amorphous films
    Okuma, S.
    Kishimoto, T.
    Kainuma, K.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 : 1274 - 1275
  • [34] Low temperature vortex phase diagram of Bi2.15Sr1.85CaCu2O8+δ:: a magnetic penetrtudy
    Prozorov, R
    Giannetta, RW
    Tamegai, T
    Guptasarma, P
    Hinks, DG
    PHYSICA C, 2000, 341 : 1123 - 1124
  • [35] Phase diagram of vortex matter in layered high-temperature superconductors with random point pinning
    Dasgupta, Chandan
    Valls, Oriol T.
    PHYSICAL REVIEW B, 2006, 74 (18)
  • [36] Determination of Tc, vortex creation and vortex imaging of a superconducting Nb film using low-temperature magnetic force microscopy
    Roseman, M
    Grütter, P
    JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) : 8840 - 8842
  • [37] Vortex phase diagram and dynamics near T=0 probed by voltage noise in amorphous superconducting films
    Okuma, S.
    Suzuki, K.
    Kokubo, N.
    NOISE AND FLUCTUATIONS, 2007, 922 : 237 - +
  • [38] Flux dynamics, anisotropy in Jc and vortex phase diagram of H+-intercalated FeSe single crystal
    Wen, Zhiwei
    Jia, Tao
    Xiao, Yusen
    Wu, Yuxian
    Li, Yong
    Li, Shulong
    Cui, Yajing
    Zhong, Ruidan
    Chen, Yongliang
    Cheng, Cuihua
    Zhao, Yong
    CHINESE JOURNAL OF PHYSICS, 2024, 92 : 721 - 731
  • [39] Strong Vortex Pinning in the Low–Temperature Superconducting Phase of (U1−xThx)Be13
    Ana Celia Mota
    Elisabeth Dumont
    James L. Smith
    Journal of Low Temperature Physics, 1999, 117 : 1477 - 1481
  • [40] Vortex domain structures of an epitaxial ferroelectric nanodot and its temperature-misfit strain phase diagram
    Chen, W. J.
    Zheng, Yue
    Wang, B.
    Ma, D. C.
    Ling, F. R.
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (19) : 7277 - 7285
12345