Strong Polar Optical Phonon Screening and Softening Enhance the Thermoelectric Performance of Zintl Compounds
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DOI: 10.1002/aenm.202405024
Abstract: Ternary CaAl2Si2‐structure‐type Zintl compounds are promising p‐type counterparts to n‐type Mg3(Sb, Bi)2 for thermoelectric energy conversion. However, many of these p‐type Zintl compounds suffer from low carrier concentration and mobility, resulting in poor thermoelectric performance.… read more here.
Keywords: zintl; strong polar; thermoelectric performance; zintl compounds ... See more keywords
Transients obscured by dusty discs
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DOI: 10.1093/mnras/stae589
Abstract: Dust absorption is invoked in a number of contexts for hiding a star that has survived some sort of transient event from view. Dust formed in a transient is expanding away from the star and,… read more here.
Keywords: transients obscured; optical depth; dust; obscured dusty ... See more keywords
Energy and spin relaxations in drift transport of carriers: effects of polar optical hot phonon generation
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DOI: 10.1140/epjb/e2018-90519-4
Abstract: We study the energy and spin relaxations in drift transport of electrons in n -doped GaAs. Stating from the rate of change of phonon occupancy in a relaxation time approximation and the electronic power dissipated… read more here.
Keywords: relaxation; polar optical; phonon; energy spin ... See more keywords