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Journal Articles

Possible singlet-triplet transition of ESR in the kagome-lattice antiferromagnet

Sakai, Toru; Hijii, Keigo*; Okubo, Susumu*; Ota, Hitoshi*; Nakano, Hiroki*; Miyashita, Seiji*

Applied Magnetic Resonance, 46(9), p.997 - 1002, 2015/09

https://doi.org/10.1007/s00723-015-0652-9
 Times Cited Count：1 Percentile：6.49(Physics, Atomic, Molecular & Chemical)

The S=1/2 kagome-lattice antiferromagnet is investigated by the numerical diagonalization of 18-spin finite-size cluster. The matrix elements proportional to the intensity of the singlet-triplet ESR transition are calculated in the presence of the Dzyaloshinsky-Moriya interaction. Some angle-dependent selection rules is also proposed.

Journal Articles

Pressure-induced successive magnetic phase transitions in the spin gap system TlCuCl$$_{3}$$

Osawa, Akira; Kakurai, Kazuhisa; Osakabe, Toyotaka; Nakamura, Mitsutaka; Takeda, Masayasu; Tanaka, Hidekazu*

Journal of the Physical Society of Japan, 73(6), p.1446 - 1449, 2004/06

https://doi.org/10.1143/JPSJ.73.1446
 Times Cited Count：33 Percentile：77.73(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Field-induced magnetic order and simultaneous lattice deformation in TlCuCl$$_3$$

Vyaselev, O.*; Takigawa, Masashi*; Vasiliev, A.*; Osawa, Akira; Tanaka, Hidekazu*

Physical Review Letters, 92(20), p.207202_1 - 207202_4, 2004/05

https://doi.org/10.1103/PhysRevLett.92.207202
 Times Cited Count：37 Percentile：79.57(Physics, Multidisciplinary)

We report the results of Cu and Cl nuclear magnetic resonance experiments and thermal expansion measurements in magnetic fields in the coupled dimer spin system TlCuCl$$_3$$. We found that the field-induced antiferromagnetic transition as confirmed by the splitting of NMR lines is slightly discontinuous. The abrupt change of the electric field gradient at the Cl sites, as well as the sizable change of the lattice constants, across the phase boundary indicate that the magnetic order is accompanied by simultaneous lattice deformation. These results suggest the importance of the spin-lattice correlations in this system.

Journal Articles

Neutron diffraction study of the pressure-induced magnetic ordering in the spin gap system TlCuCl$$_{3}$$

Osawa, Akira; Fujisawa, Masashi*; Osakabe, Toyotaka; Kakurai, Kazuhisa; Tanaka, Hidekazu*

Journal of the Physical Society of Japan, 72(5), p.1026 - 1029, 2003/05

https://doi.org/10.1143/JPSJ.72.1026
 Times Cited Count：60 Percentile：87.55(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Neutron scattering study of magnetic ordering and excitations in the doped spin-gap system Tl(Cu$$_{1-x}$$Mg$$_{x}$$)Cl$$_{3}$$

Osawa, Akira; Fujisawa, Masashi*; Kakurai, Kazuhisa; Tanaka, Hidekazu*

Physical Review B, 67(18), p.184424_1 - 184424_8, 2003/05

https://doi.org/10.1103/PhysRevB.67.184424
 Times Cited Count：31 Percentile：77.52(Materials Science, Multidisciplinary)

no abstracts in English

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