期刊
PHYSICAL REVIEW B
卷 80, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.172404
关键词
exchange interactions (electron); Jahn-Teller effect; molecular magnetism; vanadium
资金
- Ikerbasque Foundation
Quantum-mechanical calculations predict the existence of toroidal spin structure in the molecular magnet V-15. It is shown that nonzero toroidal moment arises from symmetry violation of the exchange interactions between spins of the base triangle of the V-15 molecule due to the Jahn-Teller effect. It is established that the value of the toroidal moment is connected with value of total spin projection of V-15 on z axis. It enables to induce the toroidal moment by external magnetic field and (or) to induce the magnetic moment by variable electric field or by current.
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