Nuclear Magnetic Relaxation in the Haldane-Gap Antiferromagnet Ni(C_2H_8N_2)_2NO_2(ClO_4) (Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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A new theory is proposed to interpret nuclear spin-lattice relaxation-time (T_1) measurements on the spin-1 quasi-one-dimensional Heisenberg antiferromagnet Ni(C_2H_8N_2)_2NO_2(CIO_4) (NENP). While Sagi and Affleck [Phys. Rev. B 53 (1996) 9188] pioneeringly discussed this subject in terms of field-theoretical languages, there is no theoretical attempt yet to explicitly simulate the novel observations of T^<-1>_1 reported by Fujiwara et al. [Phys. Rev. B 47 (1993) 11860]. By means of modified spin waves, we interpret the minimum of T^<1->_1 as a function of an applied field, pending for the past decade.
- 社団法人日本物理学会の論文
- 2004-04-15
著者
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YAMAMOTO Shoji
Division of Physics, Hokkaido University
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HORI Hiromitsu
Division of Physics, Hokkaido University
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Hori Hiromitsu
Division Of Physics Hokkaido University
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Yamamoto Shoji
Division Of Physics Hokkaido University
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