Magnetic-field induced quantum phase transition and critical behavior in a gapped spin system TlCuCl3

被引：4
|
作者：
Yamada, F. [1 ]
Ono, T.
Fujisawa, M.
Tanaka, H.
Sakakibara, T.
机构：
[1] Tokyo Inst Technol, Dept Phys, Kashiwa, Chiba 1528551, Japan
[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期
关键词：
TlCuCl3; spin gap; field-induced magnetic ordering; magnon; Bose-Einstein condensation;
D O I：
10.1016/j.jmmm.2006.10.372
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetization measurements were performed on TlCuCl3 with gapped ground state. The critical density and the magnetic phase diagram were obtained. The interacting constant was obtained as U/k(B) = 313 K. The experimental phase boundary for T < 5 K agrees perfectly with the magnon BEC theory based on the Hartree-Fock approximation with realistic dispersion relations and U/k(B) 320 K. 3 The exponent phi obtained with all the data points for T < 5 K is phi = 1.99, which is somewhat larger than theoretical exponent phi(BEC) = 3/2. However, it was found that the exponent converges at phi(BEC) =3/2 with decreasing fitting window. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1352 / 1354
页数：3
相关论文
共 50 条
  • [1] Magnetic quantum phase transitions from gapped spin liquid state in TlCuCl3
    Tanaka, H.
    Yamada, F.
    Ono, T.
    Sakakibara, T.
    Uwatoko, Y.
    Oosawa, A.
    Kakurai, K.
    Goto, K.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 310 (02) : 1343 - 1348
  • [2] Pressure-induced magnetic quantum phase transition from gapped ground state in TlCuCl3
    Goto, K
    Fujisawa, M
    Ono, T
    Tanaka, H
    Uwatoko, Y
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2004, 73 (12) : 3254 - 3257
  • [3] Magnetic-field induced Bose-Einstein condensation of magnons and critical behavior in interacting spin dimer system TlCuCl3
    Yamada, Fumiko
    Ono, Toshio
    Tanaka, Hidekazu
    Misguich, Gregoire
    Oshikawa, Masaki
    Sakakibara, Toshiro
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (01)
  • [4] The Field-Induced Magnetic Ordering Transition in TlCuCl3
    Sirker, Jesko
    Weisse, Alexander
    Sushkov, Oleg P.
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2005, 74
  • [5] Thermodynamics of the coupled spin-dimer system TlCuCl3 close to a quantum phase transition
    Lorenz, T.
    Stark, S.
    Heyer, O.
    Hollmann, N.
    Vasiliev, A.
    Oosawa, A.
    Tanaka, H.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 316 (02) : 291 - 297
  • [6] Pressure-induced magnetic quantum phase transition in TlCuCl3 and KCuCl3
    Goto, K.
    Ono, T.
    Tanaka, H.
    Oosawa, A.
    Uwatoko, Y.
    Kakurai, K.
    Osakabe, T.
    [J]. LOW TEMPERATURE PHYSICS, PTS A AND B, 2006, 850 : 1059 - +
  • [7] Pressure- and field-induced magnetic quantum phase transitions in TlCuCl3
    Normand, B
    Matsumoto, M
    Nohadani, O
    Wessel, S
    Haas, S
    Rice, TM
    Sigrist, M
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (11) : S867 - S873
  • [8] Pressure-induced successive magnetic phase transitions in the spin gap system TlCuCl3
    Oosawa, A
    Kakurai, K
    Osakabe, T
    Nakamura, M
    Takeda, M
    Tanaka, H
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2004, 73 (06) : 1446 - 1449
  • [9] Magnetic ordering under high pressure in the quantum spin system TlCuCl3
    Tanaka, H
    Goto, K
    Fujisawa, M
    Ono, T
    Uwatoko, Y
    [J]. PHYSICA B-CONDENSED MATTER, 2003, 329 : 697 - 698
  • [10] Spin dynamics in the high-field phase of quantum-critical S=1/2 TlCuCl3
    Rüegg, C
    Cavadini, N
    Furrer, A
    Krämer, K
    Güdel, HU
    Vorderwisch, P
    Mutka, H
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1): : S840 - S842
12345