Evolution of the Nematic Susceptibility in LaFe 1 − x
| Autor: | Xiaochen Hong, Francesco Scaravaggi, Piotr Lepucki, Sabine Wurmehl, R. Kappenberger, Saicharan Aswartham, Christian Hess, Anja U. B. Wolter, Federico Caglieris, Hans-Joachim Grafe, Bernd Büchner |
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| Rok vydání: | 2020 |
| Předmět: |
Superconductivity
Materials science Doping General Physics and Astronomy chemistry.chemical_element 01 natural sciences Condensed Matter::Soft Condensed Matter Condensed Matter::Materials Science Crystallography Tetragonal crystal system Amplitude chemistry Liquid crystal Condensed Matter::Superconductivity Quantum critical point Phase (matter) 0103 physical sciences Condensed Matter::Strongly Correlated Electrons 010306 general physics Cobalt |
| Zdroj: | Physical Review Letters |
| ISSN: | 0031-9007 |
| DOI: | 10.1103/PhysRevLett.125.067001 |
| Popis: | We report a systematic elastoresistivity study on ${\mathrm{LaFe}}_{1\ensuremath{-}x}{\mathrm{Co}}_{x}\mathrm{AsO}$ single crystals, which have well separated structural and magnetic transition lines. All crystals show a Curie-Weiss--like nematic susceptibility in the tetragonal phase. The extracted nematic temperature is monotonically suppressed upon cobalt doping, and changes sign around the optimal doping level, indicating a possible nematic quantum critical point beneath the superconducting dome. The amplitude of the nematic susceptibility shows a peculiar double-peak feature. This could be explained by a combined effect of different contributions to the nematic susceptibility, which are amplified at separated doping levels of ${\mathrm{LaFe}}_{1\ensuremath{-}x}{\mathrm{Co}}_{x}\mathrm{AsO}$. |
| Databáze: | OpenAIRE |
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