2008/04/08 by N. Johannsen, S. Süllow, S. Suellow +3
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.78.121103
4 pages, 4 figures
arxiv created 2008/04/08 · openalex publication_date 2008/09/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Motivated by the observation of a giant Nernst effect in URu2Si2, the thermoelectric response of the related system UPt2Si2 was investigated using thermal and electric transport properties such as the Nernst and Seebeck effects, thermal conductivity, Hall effect, and electrical resistivity. Unlike URu2Si2, UPt2Si2 is neither superconducting nor exhibits a ``hidden-order'' state. Nevertheless a pronounced Nernst effect anomaly is found to coincide with the onset of the antiferromagnetic order in UPt2Si2. Although the absolute values are substantially lower, its appearance and characteristics can favorably be compared to the giant Nernst effect in URu2Si2, indicating the common feature of a partial Fermi surface gap.