Nuclear Spin-Lattice Relaxation in One-Dimensional Heisenberg Ferrimagnets: Three-Magnon versus Raman Processes

Abstract

Nuclear spin-lattice relaxation in one-dimensional Heisenberg ferrimagnets is studied by means of a modified spin-wave theory. We consider the second-order process, where a nuclear spin flip induces virtual spin waves which are then scattered thermally via the four-magnon exchange interaction, as well as the first-order process, where a nuclear spin directly interacts with spin waves via the hyperfine interaction. We point out a possibility of the three-magnon relaxation process predominating over the Raman one and suggest model experiments.

arXiv commentto be published in J. Phys. Soc. Jpn. 73, No. 6 (2004)

References in corpus (9)

• Low-Lying Excited States and Low-Temperature Properties of an Alternating Spin-1 / Spin-1/2 Chain : A DMRG study
• Thermodynamic Properties of Heisenberg Ferrimagnetic Spin Chains: Ferromagnetic-Antiferromagnetic Crossover
• A DMRG Study of Low-Energy Excitations and Low-Temperature Properties of Alternating Spin Systems
• Magnetic Properties of Quantum Ferrimagnetic Spin Chains
• Bosonic representation of one-dimensional Heisenberg ferrimagnets
• Spin-Wave Description of Nuclear Spin-Lattice Relaxation in Mn_{12}O_{12} Acetate
• Low-Energy Structure of Heisenberg Ferrimagnetic Spin Chains
• Nuclear spin-lattice relaxation in ferrimagnetic clusters and chains: A contrast between zero and one dimensions
• Modified spin-wave description of the nuclear spin relaxation in ferrimagnetic Heisenberg chains

Cited by in corpus (4)

• Low-temperature thermodynamics of one-dimensional alternating-spin Heisenberg ferromagnets
• Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets
• Evidence for multimagnon-mediated nuclear spin relaxation in the intertwining double-cain ferrimagnet $C{a}_{3}C{u}_3(P{O}_4{)}_4$
• Modified spin-wave theory of nuclear magnetic relaxation in one-dimensional quantum ferrimagnets: Three-magnon versus Raman processes