Anomalous thermospin effect in the low-buckled Dirac materials
arXiv:1406.5148 · doi:10.1103/PhysRevB.90.155107
Abstract
A strong spin Nernst effect with nontrivial dependences on the carrier concentration and electric field applied is expected in silicene and other low-buckled Dirac materials. These Dirac materials can be considered as being made of two independent electron subsystems of the two-component gapped Dirac fermions. For each subsystem the gap breaks a time-reversal symmetry and thus plays a role of an effective magnetic field. Accordingly, the standard Kubo formalism has to be altered by including the effective magnetization in order to satisfy the third law of thermodynamics. We explicitly demonstrate this by calculating the magnetization and showing how the correct thermoelectric coefficient emerges.
10 pages, 4 figures; final version published in PRB
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Cited by in corpus (5)
- Magnetic Properties of Dirac Fermions in a Buckled Honeycomb Lattice
- Spin-resolved orbital magnetization in Rashba two-dimensional electron gas
- Modified spin-orbit couplings in uniaxially strained graphene
- The Nernst effect in Corbino geometry
- Heat-bath approach to anomalous thermal transport: effects of inelastic scattering