期刊
PHYSICAL REVIEW LETTERS
卷 114, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.196601
关键词
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资金
- Japan Society for the Promotion of Science, Japan [25400344, 24244053]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [26103006]
- Grants-in-Aid for Scientific Research [26103006] Funding Source: KAKEN
A microscopic formalism to calculate thermal transport coefficients is presented based on a thermal vector potential, whose time derivative is related to a thermal force. The formalism is free from the unphysical divergences reported to arise when Luttinger's formalism is applied naively, because the equilibrium (diamagnetic) currents are treated consistently. The mathematical structure for the thermal transport coefficients is shown to be identical with that for the electric ones if the electric charge is replaced by the energy. The results indicate that the thermal vector potential couples to the energy current via the minimal coupling.
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