Spin Excitations in the Two-leg Ladder Antiferromagnet CaV2O5
Tetsuo Ohama, Masahiko Isobe, Yutaka Ueda
Abstract
The nuclear spin-lattice relaxation rate (1/T1) at the V sites in CaV2O5 was measured. The result was compared with the calculation for the two-leg ladder with the strong-coupling expansion. We found a good agreement on the temperature and magnetic field dependence but a discrepancy between the exchange parameters deduced from 1/T1 and the magnetic susceptibility.
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