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Prog. Theor. Phys. Supplement No.159 (2005) pp. 22-32

[ Full Text PDF : FREE ACCESS (444K) ]

Neutron Scattering Investigation on Quantum Spin System SrCu2(BO3)2

Kazuhisa Kakurai,1,* Katsuyuki Nukui,2,** Naofumi Aso,2 Masakazu Nishi,2 Hiroaki Kadowaki,3 Hiroshi Kageyama,4 Yutaka Ueda,5 L.-P. Regnault6 and O. Cépas7

1Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
2Neutron Science Laboratory, Institute for Solid State Physics, The University of Tokyo, Tokai, Ibaraki 319-1106, Japan
3Department of Physics, Tokyo Metropolitan University, Hachioji 192-0397, Japan
4Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
5Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
6DRFMC-SPSMS, CEA-Grenoble, F-38402 Grenoble Cedex 9, France
7Insitut Laue Langevin, BP 156, F-38402 Grenoble Cedex 9, France

Abstract:

In this paper we would like to review the zero field inelastic neutron scattering results obtained by using both the thermal and cold neutron triple axis instrument. The first single triplet state at around 3 meV is split due to the Dzyaloshinski-Moriya (DM) inter-dimer interaction with both the out-of-plane and in-plane components. The splitting between the Sz = ±1 states is of the order of 0.3 meV. The two triplets bound states also form a very flat bands at 4.9, 5.5 and 6.3 meV with finite line width of the order and/or twice of the DM splitting. Finally the higher energy range up to 13 meV can be also characterized by three rather broad, but flat bands at around 8, 10 and 12 meV with the line width roughly three times the DM splitting. These excitations can be probably assigned to three and more triplets bound state excitations.


URL : http://ptp.ipap.jp/link?PTPS/159/22/
DOI : 10.1143/PTPS.159.22


*E-mail: kakurai@neutrons.tokai.jaeri.go.jp
**Present address: Fuji Photo Film Co. Ltd.

[ Full Text PDF : FREE ACCESS (444K) ] Citation:

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Citing Article(s) :

  1. Journal of the Physical Society of Japan 79 (2010) 011005 (13 pages) :
    Novel Ordered Phases in the Orthogonal Dimer Spin System SrCu2(BO3)2
    Masashi Takigawa, Takeshi Waki, Mladen Horvatić, and Claude Berthier
  2. Journal of the Physical Society of Japan 80 (2011) 043707 (4 pages) :
    Specific Heat of the S=1/2 Two-Dimensional Shastry–Sutherland Antiferromagnet SrCu2(BO3)2 in High Magnetic Fields
    Hiroyuki Tsujii, Costel R. Rotundu, Bohdan Andraka, Yasumasa Takano, Hiroshi Kageyama, and Yutaka Ueda

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