| Автор | G. Chaboussant |
| Автор | R. Basler |
| Автор | A. Sieber |
| Автор | S. T. Ochsenbein |
| Автор | A. Desmedt |
| Автор | R. E. Lechner |
| Автор | M. T. F. Telling |
| Автор | P. Kögerler |
| Автор | A. Müller |
| Автор | H.-U. Güdel |
| Дата выпуска | 2002-07-01 |
| dc.description | We report an Inelastic Neutron Scattering (INS) study of the fully deuterated molecular compound K<sub>6</sub>[V<sub>15</sub><sup>IV</sup>As<sub>6</sub>O<sub>42</sub>] · 9D<sub>2</sub>O (V<sub>15</sub>). Due to geometrical frustration, the essential physics at low temperatures of the V<sub>15</sub> cluster containing 15 coupled V<sup>4+</sup> (S = 1/2) is determined by three weakly coupled spin-(1/2) on a triangle. The INS spectra at low energy allow us to directly determine the effective exchange coupling J<sub>0</sub> = 0.211(2) meV within the triangle and the gap 2Δ = 0.035(2) meV between the two spin-(1/2) doublets of the ground state. Results are discussed in terms of deviations from trigonal symmetry and Dzyaloshinskii-Moriya (DM) interactions. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2002 EDP Sciences |
| Название | Low-energy spin excitations in the molecular magnetic cluster V<sub>15</sub> |
| Тип | lett |
| DOI | 10.1209/epl/i2002-00240-x |
| Electronic ISSN | 1286-4854 |
| Print ISSN | 0295-5075 |
| Журнал | EPL (Europhysics Letters) |
| Том | 59 |
| Первая страница | 291 |
| Последняя страница | 297 |
| Выпуск | 2 |
