We report a systematic elastoresistivity study on LaFe1-xCoxAsO 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 LaFe1-xCoxAsO.
Evolution of the Nematic Susceptibility in LaFe1-xCoxAsO
Caglieris F.Secondo
;
2020
Abstract
We report a systematic elastoresistivity study on LaFe1-xCoxAsO 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 LaFe1-xCoxAsO.| File | Dimensione | Formato | |
|---|---|---|---|
|
Nr 15_Prodotto_PhysRevLett.125.067001_PRL Hong.pdf
solo utenti autorizzati
Tipologia:
Versione Editoriale (PDF)
Licenza:
Creative commons
Dimensione
680.71 kB
Formato
Adobe PDF
|
680.71 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
