Helical thermoelectrics and refrigeration

Abstract

The thermoelectric properties of a three terminal quantum spin Hall (QSH) sample are examined. Inherent helicity of the QSH sample helps to generate a large charge power efficiently. Along with charge the system can be designed to work as a highly efficient spin heat engine too. The advantage of a helical over a chiral sample is that, while a multiterminal quantum Hall sample can only work as a quantum heat engine due to broken time reversal(TR) symmetry, a multiterminal QSH system can work effectively both as a charge/spin heat engine as well as a charge/spin refrigerator as TR symmetry is preserved.

arXiv comment8 pages, 5 figures, accepted for publication in Phys. Rev. E

References in corpus (15)

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• Gate voltage controlled thermoelectric figure of merit in three-dimensional topological insulator nanowires
• Optimal thermoelectricity with quantum spin-Hall edge states
• Nonlocal thermoelectricity in a topological Andreev interferometer
• Thermoelectric performance of topological boundary modes
• Multitask quantum thermal machines and cooperative effects
• Helical spin thermoelectrics controlled by a side-coupled magnetic quantum dot in the quantum spin Hall state
• Designing a highly efficient graphene quantum spin heat engine
• Nonlinear chiral refrigerators
• Quantum thermodynamics of nanoscale thermoelectrics and electronic devices
• Thermodynamics of energy, charge and spin currents in thermoelectric quantum-dot spin valve
• Detailed study of nonlinear cooling with two-terminal configurations of topological edge states
• Quantum thermocouples: nonlocal conversion and control of heat in nanostructures
• Majorana Thermoelectrics and Refrigeration
• Reaching Van den Broeck limit in linear response and Whitney limit in nonlinear response in edge mode quantum thermoelectrics and refrigeration
• Majorana fermion induced power-law scaling in the violations of the Wiedemann-Franz law