Quantum Phase Transition in Quasi-One-Dimensional Spin-1 System SrNi_2V_2O_8 Induced by Cation Substitution(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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Magnetic ground state of SrNi_2V_2O_8 has been investigated by many authors [Phys. Rev. Lett. 83 (1999) 632 ; Phys. Rev. B 62 (2000) 8921 ; and Phys. Rev. B 73 (2006) 012407], showing the different conclusions of which SrNi_2V_2O_8 falls into an ordered state or a spin-liquid state. In this study, we observed a quantum phase transition of a spin-liquid state to an ordered state in SrNi_2V_2O_8 by a minor substitution of Ca^<2+> ions. Our experimental results provide concrete evidence that SrNi_2V_2O_8 is likely in a disordered ground state, which is close to the phase boundary between the spin-liquid and the Ising-like Neel ordered state on the Sakai-Takahashi phase diagram.
- 社団法人日本物理学会の論文
- 2008-01-15
著者
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UEDA Yutaka
Institute for Solid State Physics, University of Tokyo
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Ueda Yutaka
Institute For Solid State Physics University Of Tokyo
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HE Zhangzhen
Institute for Solid State Physics, University of Tokyo
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He Zhangzhen
Institute For Solid State Physics University Of Tokyo
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Ueda Yutaka
Institute For Solid State Physic The University Of Tokyo
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