Thermal Conductivity due to Spinons in the One-Dimensional Quantum Spin System Sr2V3O9

Abstract

We have measured the thermal conductivity along different directions of the S = 1/2 one-dimensional (1D) spin system Sr2V3O9 in magnetic fields up to 14 T. It has been found that the thermal conductivity along the [10-1] direction, \k{appa}[10-1], is large and markedly suppressed by the application of magnetic field, indicating that there is a large contribution of spinons to \k{appa}[10-1] and that the spin chains run along the [10-1] direction. The maximum value of the thermal conductivity due to spinons is ~14 W/Km along the [10-1] direction, supporting the empirical law that the magnitude of the thermal conductivity due to spinons is roughly proportional to the antiferromagnetic interaction between the nearest neighboring spins.

arXiv comment22 pages, 6 figures, 1 table

References in corpus (14)

• Transport and conservation laws
• Integrability and ideal conductance at finite temperatures
• Heat transport by lattice and spin excitations in the spin chain compounds SrCuO_2 and Sr_2CuO_3
• The thermal conductivity of the spin-1/2 XXZ chain at arbitrary temperature
• Heat conduction in low-dimensional quantum magnets
• Thermal conductivity via magnetic excitations in spin-chain materials
• Ballistic heat transport of quantum spin excitations as seen in SrCuO2
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• Universal behavior of spin-mediated energy transport in S=1/2 chain cuprates: BaCu2Si2O7 as an example
• Enhancement of Thermal Conductivity due to Spinons in the One-Dimensional Spin System SrCuO_2
• Thermal Conductivity of the Quasi One-Dimensional Spin System Sr_2_V_3_O_9_

Cited by in corpus (3)

• Spinon continuum in the Heisenberg quantum chain compound Sr${}_2$V${}_3$O${}_9$
• Thermal Conductivity due to Spins in the Two-Dimensional Spin System Ba${}_2$Cu${}_3$O${}_4$Cl${}_2$
• Thermal Conductivity of the S = 1/2 Quasi-One-Dimensional Ferromagnetic Spin System CsCuCl3