Strained graphene based highly efficient quantum heat engine operating at maximum power

Abstract

A strained graphene monolayer is shown to operate as a highly efficient quantum heat engine delivering maximum power. The efficiency and power of the proposed device exceeds that of recent proposals. The reason for these excellent characteristics is that strain enables complete valley separation in transmittance through the device, implying that increasing strain leads to very high Seebeck coefficient as well as lower conductance. In addition, since time-reversal symmetry is unbroken in our system, the proposed strained graphene quantum heat engine can also act as a high performance refrigerator.

6 pages, 8 figures, accepted for publication in Phys. Rev. E (2017)

References in corpus (7)

• A tight-binding approach to uniaxial strain in graphene
• All-graphene integrated circuits via strain engineering
• Strong bounds on Onsager coefficients and efficiency for three terminal thermoelectric transport in a magnetic field
• Spin-dependent Seebeck effect and spin caloritronics in magnetic graphene
• Magneto-strain-driven quantum engine on a graphene flake
• Enhanced Seebeck effect in graphene devices by strain and doping engineering
• Fermi Velocity Modulation in Graphene by Strain Engineering

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• Thermodynamics of energy, charge and spin currents in thermoelectric quantum-dot spin valve
• Thermoelectric transport of type-I, II, and III massless Dirac fermions in two-dimensional lattice model
• Impurity reveals distinct operational phases in quantum thermodynamic cycles
• Probing Majorana Bound States via Thermoelectric Transport
• 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