期刊
PHYSICAL REVIEW RESEARCH
卷 2, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.033086
关键词
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资金
- US National Science Foundation [DMR-1748188]
- ERASMUS+ Programme of the European Union
A generalized theory for transport under applied electrochemical potential and temperature gradients that includes multiband effects is presented. This theory relies on a newly defined density operator for multiband wave packets, whose dynamics containing diffusive and scattering contributions are captured in a generalized equation of motion. Given that the multiband energy structure determines the transport explicitly, the case of N degenerate bands within an isotropic constant relaxation time is considered as a particular case for illustration. Electric and thermal currents as well as transport properties are obtained through linear response and comparison to transport in a single band wave packet is provided. Our theory opens avenues for studying novel multiband effects and scattering processes in transport beyond the semiclassical single band approach.
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