Probing Andreev reflection in superfluid 3He-B using a quartz tuning fork

被引：19
作者：
Bradley, D. I. [2 ]
Clovecko, M. [1 ]
Gazo, E. [1 ]
Skyba, P. [1 ]
机构：
[1] Safarik Univ, Inst Expt Phys SAS, Ctr Low Temp Phys, Kosice 04001, Slovakia
[2] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
来源：
JOURNAL OF LOW TEMPERATURE PHYSICS | 2008年 / 152卷 / 5-6期
基金：
英国工程与自然科学研究理事会;
关键词：
superfluid (3)He-B; Andreev reflection; tuning fork;
D O I：
10.1007/s10909-008-9815-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Direct measurements of the Andreev reflection of the quasiparticles excitations in superfluid (3)He-B in the ballistic regime at 0.5 bar using a quartz tuning fork are presented. Based on these measurements, we were able to determine the value of the ratio Delta(0)/kT(c) to be 1.71, in reasonable agreement with previous measurements. Moreover, it seems that Andreev reflection of excitations gives a possibility to determine the value of the constant lambda characterizing the velocity field profile. This value for a tuning fork was estimated to be 1.28, different from that for cylindrical wire (lambda similar to 0.95), suggesting that the anti-phase oscillatory motion and the geometry of the tuning prongs lead to an enhancement of the velocity of the superfluid flow.
引用
收藏
页码：147 / 155
页数：9
相关论文
共 22 条
  • [1] ANDREEV AF, 1964, SOV PHYS JETP-USSR, V19, P1228
  • [2] Quartz tuning fork: Thermometer, pressure- and viscometer for helium liquids
    Blaauwgeers, R.
    Blazkova, M.
    Clovecko, M.
    Eltsov, V. B.
    de Graaf, R.
    Hosio, J.
    Krusius, M.
    Schmoranzer, D.
    Schoepe, W.
    Skrbek, L.
    Skyba, P.
    Solntsev, R. E.
    Zmeev, D. E.
    [J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 2007, 146 (5-6) : 537 - 562
  • [3] Vibrating quartz fork - A tool for cryogenic helium research
    Blazkova, M.
    Clovecko, M.
    Eltsov, V. B.
    Gazo, E.
    de Graaf, R.
    Hosio, J. J.
    Krusius, M.
    Schmoranzer, D.
    Schoepe, W.
    Skrbek, L.
    Skyba, P.
    Solntsev, R. E.
    Vinen, W. F.
    [J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 2008, 150 (3-4) : 525 - 535
  • [4] Quantum turbulence generated and detected by a vibrating quartz fork
    Blazkova, M.
    Clovecko, M.
    Gazo, E.
    Skrbek, L.
    Skyba, P.
    [J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 2007, 148 (3-4) : 305 - 310
  • [5] Quantum turbulence in superfluid 3He illuminated by a beam of quasiparticle excitations -: art. no. 235302
    Bradley, DI
    Fisher, SN
    Guénault, AM
    Lowe, MR
    Pickett, GR
    Rahm, A
    Whitehead, RCV
    [J]. PHYSICAL REVIEW LETTERS, 2004, 93 (23)
  • [6] Repetitive single vortex-loop creation by a vibrating wire in superfluid 3He-B
    Bradley, DI
    [J]. PHYSICAL REVIEW LETTERS, 2000, 84 (06) : 1252 - 1255
  • [7] Clovecko M, 2004, ACTA PHYS SLOVACA, V54, P525
  • [8] Quartz tuning fork viscometers for helium liquids
    Clubb, DO
    Buu, OVL
    Bowley, RM
    Nyman, R
    Owers-Bradley, JR
    [J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 2004, 136 (1-2) : 1 - 13
  • [9] SPIN-INDEPENDENT TRANSPORT PARAMETERS FOR SUPERFLUID HE-3-B
    EINZEL, D
    [J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1984, 54 (5-6) : 427 - 474
  • [10] DIRECT OBSERVATION OF THE ANDREEV REFLECTION OF A BEAM OF EXCITATIONS IN SUPERFLUID HE-3-B
    ENRICO, MP
    FISHER, SN
    GUENAULT, AM
    PICKETT, GR
    TORIZUKA, K
    [J]. PHYSICAL REVIEW LETTERS, 1993, 70 (12) : 1846 - 1849
123