2019/09/02 by E. A. Ovchenkov, Ovchenkov, Y. A., Д. А. Чареев +17
Business, Management and Accounting · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Intellectual Capital and Performance Analysis #Iron-based superconductors research #Rare-earth and actinide compounds #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.1909.00711
openalex publication_date 2019/09/02 · openalex created_date 2019/09/12 · openalex updated_date 2026/07/28
We report on the synthesis and physical properties of FeSe1-xTex single crystals with a low Te content (x = 0.17, 0.21, 0.25), where the replacement of Se with Te partially suppresses superconductivity. Resistivity and Hall effect measurements indicate weak anomalies at elevated temperatures ascribed to nematic transitions. A quasi-classical analysis of transport data, including in a pulsed magnetic field of up to 25 T, confirms the inversion of majority carriers type from holes in FeSe to electrons in FeSe1-xTex at x > 0.17. The temperature-dependent term in the elastoresistance of the studied compositions has a negative sign, which means that for substituted FeSe compositions, the elastoresistance is positive for hole-doped materials and negative for electron-doped materials just like in semiconductors such as silicon and germanium.