Giant Nernst-Ettingshausen oscillations in Semiclassically strong magnetic fields

Abstract

We consider the Nernst-Ettingshausen (NE) effect in the presence of semiclassically strong magnetic fields for a quasi-two dimensional system with a parabolic or linear dispersion of carriers. We show that the occurring giant oscillations of the NE coefficient are coherent with the recent experimental observation in graphene, graphite and bismuth. In the 2D case we find the exact shape of these oscillations and show that their magnitude decreases/increases with enhancement of the Fermi energy for Dirac fermions/normal carriers. With a crossover to 3D spectrum the phase of oscillations shifts, their amplitude decreases and the peaks become asymmetric.

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• Thermopower in an anisotropic two-dimensional Weyl semimetal
• Photo-Nernst current in graphene
• Longitudinal conductivity of massless fermions with tilted Dirac cone in magnetic field
• Landau spectrum and twin boundaries of bismuth in the extreme quantum limit
• Phonon drag thermopower in graphene in equipartition regime
• Prediction of thermomagnetic and thermoelectric properties for novel materials and systems
• Quantum capacitance oscillations in graphene under crossed magnetic and electric fields
• The Nernst effect in Corbino geometry
• Entropy Signatures of Topological Phase Transitions
• Magneto-oscillations on specific heat of graphene monolayer
• Magnetobreakdown oscillations of Nernst-Ettingshausen field in layered conductors
• Nernst and Ettingshausen effects in the Laughlin geometry