Drastic Change of Magnetic Phase Diagram in Doped Quantum Antiferromagnet TlCu_<1-x>Mg_xCl_3 (Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
- 論文の詳細を見る
TlCuCl_3 is a coupled spin dimer system, which has a singlet ground state with an excitation gap of Δ/gμB=5.5T. TlCu_<1-χ>Mg_χCl_3 doped with nonmagnetic Mg^<2+> ions undergoes impurity-induced magnetic ordering. Because triplet excitation with a finite gap still remains, this doped system can also undergo magnetic-field-induced magnetic ordering. Through specific heat measurements and neutron scattering experiments under a magnetic field, we investigated the phase diagram in TlCu_<1-χ>Mg_χCl_3 with χ〜0.01, and found that impurity-and field-induced ordered phases are the same. The gapped spin liquid state observed in pure TlCuCl_3 is completely wiped out by the small amount of doping.
- 社団法人日本物理学会の論文
- 2006-03-15
著者
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FUJISAWA Masashi
Department of Physics, Tokyo Institute of Technology
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TANAKA Hidekazu
Research Center for Low Temperature Physics, Tokyo Institute of Technology
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ONO Toshio
Department of Physics, Tokyo Institute of Technology
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Smeibidl Peter
Hahn-meitner-institute
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Ono T
Department Of Physics Tokyo Institute Of Technology
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Ono Toshio
Department Of Oral Biochemistry Nagasaki University School Of Dentistry
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FUJIWARA Hideyasu
Department of Physics, Tokyo Institute of Technology
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SIKOLENKO Vadim
Hahn-Meitner-Institute
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MEISSNER Michael
Hahn-Meitner-Institute
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GERISCHER Sebastian
Hahn-Meitner-Institute
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GRAF Hans
Hahn-Meitner-Institute
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Fujiwara Hideyasu
Department Of Physics Tokyo Institute Of Technology
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Sikolenko Vadim
Hahn-meitner Inst
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Graf Hans
Hahn-meitner-institut Berlin Gmbh
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Hiraoka T
Faculty Of Science And Engineering Saga University
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Fujisawa M
Department Of Physics Tokyo Institute Of Technology
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Fujisawa Masashi
Department Of Physics Tokyo Institute Of Technology
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Tanaka Hidekazu
Research Center For Low Temperature Physics Tokyo Institute Of Technology
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