Spin Excitations in the Two-leg Ladder Antiferromagnet CaV${}_2$O${}_5$

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.

7 pages, 7 figures, submitted to J. Phys. Soc. Jpn

References in corpus (3)

• Exchange interactions and magnetic properties of the layered vanadates CaV2O5, MgV2O5, CaV3O7 and CaV4O9
• Electronic structure and exchange interactions of the ladder vanadates CaV2O5 and MgV2O5
• Quantum Monte Carlo Simulation of the Trellis Lattice Heisenberg Model for SrCu${}_2$O${}_3$ and CaV${}_2$O${}_5$

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