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|Type:||Artigo de periódico|
|Title:||Nernst effect in semimetals: The effective mass and the figure of merit|
|Abstract:||We present a study of electric, thermal, and thermoelectric transport in elemental bismuth, which presents a Nernst coefficient much larger than what was found in correlated metals. We argue that this is due to the combination of an exceptionally low carrier density with a very long electronic mean-free path. The low thermomagnetic figure of merit is traced to the lightness of electrons. Heavy-electron semimetals, which keep a metallic behavior in the presence of a magnetic field, emerge as promising candidates for thermomagnetic cooling at low temperatures.|
|Editor:||American Physical Soc|
|Citation:||Physical Review Letters. American Physical Soc, v. 98, n. 7, 2007.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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