Softening of the Spin Waves in MnP and Its Relation to the Lifshitz Point
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概要
- 論文の詳細を見る
Inelastic neutron scattering measurements on MnP reveal that the spin wavegap vanishes at the paramagnetic-ferromagnetic phase boundary in a mannerpredicted by the transverse field Ising model. The occurrence of the tricriticalpoint in a temperature-field phase diagram is strongly related to the temperature-driven change of the phenomenological parameter P:J5/Jf which describes thecompetition between the effective nearest and next-nearest-neighbor exchangeinteractions. The itinerant nature of the magnetism of this compound is em-phasized as a possible origin of the temperature dependence of P. The tricriticalpoint is most likely a Lifshitz Point as pointed out in detailed measurements of thephase diagram by Shapira et al.
- 社団法人日本物理学会の論文
- 1985-08-15
著者
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YOSHIZAWA Hideki
Institute for Solid State Physics,University of Tokyo
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Yoshizawa Hideki
Institute For Solid State Physics University Of Tokyo
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KOMATSUBARA Takemi
Institute of Materials Science,University of Tsukuba
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Komatsubara Takemi
Institute Of Materials Science University Of Tsukuba
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Yoshizawa Hideki
Institute For Solid State Physics The University Of Tokyo
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Shapiro Stephen
Brookhaven Nationa Laboratory Upton Long Island
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M.SHAPIRO Stephen
Brookhaven National Laboratory
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Komatsubara Takemi
Institute Of Material Science The University Of Tsukuba
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