Local spin susceptibility in KCuCl3
S = 1/2KCuCl3 has a singlet ground state with a finite spin energy gap *D = 31 K to triplet excited states. The bulk magnetic susceptibility vanishes for T < < *D according to the singlet nature of the ground state. Astonishingly, recent muon spin relaxation (*mSK) measurements reveal fluctuat...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2003-07, Vol.335 (1-4), p.37-40 |
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| container_title | Physica. B, Condensed matter |
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| creator | CAVADINI, N ANDREICA, D GYGAX, F. N SCHENCK, A KRÄMER, K GÜDEL, H.-U MUTKA, H WILDES, A |
| description | S = 1/2KCuCl3 has a singlet ground state with a finite spin energy gap *D = 31 K to triplet excited states. The bulk magnetic susceptibility vanishes for T < < *D according to the singlet nature of the ground state. Astonishingly, recent muon spin relaxation (*mSK) measurements reveal fluctuating internal fields down to T = 5 K, with the onset of a quasi-static regime below T = 5 K. The presence of free electronic magnetic moments and their possible freezing at low T contradicts the bulk picture of KCuCl3. By means of polarized neutron scattering and *mSK measurements on single crystals of the same batch, the nature of the local spin susceptibility is studied. The claims of a substantial muon influence in KCuCl3 are reinforced. |
| doi_str_mv | 10.1016/S0921-4526(03)00186-8 |
| format | Article |
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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Magnetic resonances and relaxations in condensed matter, mössbauer effect Magnetically ordered materials: other intrinsic properties Muon spin rotation and relaxation Physics Saturation moments and magnetic susceptibilities |
| title | Local spin susceptibility in KCuCl3 |
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