Control of heat transport in quantum spin systems

Abstract

We study heat transport in quantum spin systems analytically and numerically. First, we demonstrate that heat current through a two-level quantum spin system can be modulated from zero to a finite value by tuning a magnetic field. Second, we show that a spin system, consisting of two dissimilar parts - one is gapped and the other is gapless, exhibits current rectification and negative differential thermal resistance. Possible experimental realizations by using molecular junctions or magnetic materials are discussed.

References in corpus (12)

• Molecular Transport Junctions: Vibrational Effects
• Thermal Logic Gates: Computation with phonons
• Quantum dot as thermal rectifier
• Heat Transistor: Demonstration of Gate-Controlled Electron Refrigeration
• Resonant electron heating and molecular phonon cooling in single C${}_{60}$ junctions
• Mesoscopic photon heat transistor
• Spin transport in Heisenberg antiferromagnets
• Magnetothermal transport in the spin-1/2 chains of copper pyrazine dinitrate
• Transport in open spin chains: A Monte Carlo wave-function approach
• Thermal transport of the XXZ chain in a magnetic field
• Field-dependent thermal transport in the Haldane chain compound NENP
• Transport Control in Low-Dimensional Spin-1/2 Heisenberg Systems

Cited by in corpus (1)

• Charge and spin transport in strongly correlated one-dimensional quantum systems driven far from equilibrium