New Josephson plasma modes in underdoped YBa2Cu3O6.6 induced by a parallel magnetic field -: art. no. 247001

被引：26
作者：
Kojima, KM
Uchida, S
Fudamoto, Y
Tajima, S
机构：
[1] Univ Tokyo, Grad Sch Frontier Sci, Bunkyo Ku, Tokyo 1138656, Japan
[2] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan
来源：
PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.89.247001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The c-axis reflectivity spectrum of underdoped YBa2Cu3O6.6 (YBCO) is measured below T-c = 59 K in parallel magnetic fields H parallel to CuO2 up to 7 T. Upon application of a parallel field, a new peak appears at finite frequency in the optical conductivity at the expense of suppression of c-axis condensate weight. We conclude that the dramatic change originates from different Josephson coupling strengths between bilayers with and without Josephson vortices. We find that the 400 cm(-1) broad conductivity peak in YBCO gains the spectral weight under parallel magnetic field; this indicates that the condensate weight at omega = 0 is distributed to this peak as well as to the new optical Josephson mode.
引用
收藏
页数：4
相关论文
共 50 条
  • [41] Observation of growth-mode change under a magnetic field in YBa2Cu3O7-x -: art. no. 174528
    Ma, YW
    Watanabe, K
    Awaji, S
    Motokawa, M
    PHYSICAL REVIEW B, 2002, 65 (17): : 1 - 5
  • [42] Josephson vortices with fractional flux quanta at YBa2Cu3O7-x grain boundaries -: art. no. 134501
    Mints, RG
    Papiashvili, I
    PHYSICAL REVIEW B, 2001, 64 (13):
  • [43] Resonant magnetic excitations at high energy in superconducting YBa2Cu3O6.85 -: art. no. 167001
    Pailhès, S
    Sidis, Y
    Bourges, P
    Hinkov, V
    Ivanov, A
    Ulrich, C
    Regnault, LP
    Keimer, B
    PHYSICAL REVIEW LETTERS, 2004, 93 (16) : 167001 - 1
  • [44] Dispersion of magnetic excitations in optimally doped superconducting YBa2Cu3O6.95 -: art. no. 207003
    Reznik, D
    Bourges, P
    Pintschovius, L
    Endoh, Y
    Sidis, Y
    Masui, T
    Tajima, S
    PHYSICAL REVIEW LETTERS, 2004, 93 (20) : 207003 - 1
  • [45] Pseudogap in YBa2Cu3O7-δ from NMR in high magnetic fields -: art. no. 014511
    Mitrovic, VF
    Bachman, HN
    Halperin, WP
    Reyes, AP
    Kuhns, P
    Moulton, WG
    PHYSICAL REVIEW B, 2002, 66 (01)
  • [46] X-ray diffraction study of lattice modulations in an underdoped YBa2Cu3O6+x superconductor -: art. no. 092501
    Islam, Z
    Sinha, SK
    Haskel, D
    Lang, JC
    Srajer, G
    Veal, BW
    Haeffner, DR
    Mook, HA
    PHYSICAL REVIEW B, 2002, 66 (09): : 1 - 4
  • [47] Comment on "Conductivity of underdoped YBa2Cu3O7-δ:: Evidence for incoherent pair correlations in the pseudogap regime" -: Reply -: art. no. 179704
    Leridon, B
    Défossez, A
    Dumont, J
    Lesueur, J
    Contour, JP
    PHYSICAL REVIEW LETTERS, 2003, 90 (17)
  • [48] Antiferromagnetism in the vortex cores of YBa2Cu3O7-δ -: art. no. 220503
    Mitrovic, VF
    Sigmund, EE
    Halperin, WP
    Reyes, AP
    Kuhns, P
    Moulton, WG
    PHYSICAL REVIEW B, 2003, 67 (22)
  • [49] Magnetic field dependent vibrational modes in κ-(ET)2Cu(SCN)2 -: art. no. 174502
    Olejniczak, I
    Choi, J
    Musfeldt, JL
    Wang, YJ
    Schlueter, JA
    Klemm, RA
    PHYSICAL REVIEW B, 2003, 67 (17)
  • [50] Charge and spin structure in YBa2Cu3O6.35 -: art. no. 097004
    Mook, HA
    Dai, PC
    Dogan, F
    PHYSICAL REVIEW LETTERS, 2002, 88 (09) : 4
12345