Resistivity measurements unveil microscopic properties of CrAs

Autor:	Nigro, A., Marra, P., Autieri, C., Wu, W., Cheng, J. G., Luo, J., Noce, C.
Rok vydání:	2018
Předmět:	Condensed Matter - Strongly Correlated Electrons
Zdroj:	EPL, 125 (2019) 57002
Druh dokumentu:	Working Paper
DOI:	10.1209/0295-5075/125/57002
Popis:	We report resistivity measurements of a CrAs single crystal in a wide temperature range, with the specific aim to assess the applicability of the Bloch-Gruneisen formula for electron-phonon resistivity. We find that the resistance reaches a residual value at Tc=4.2 K and its temperature dependence cannot be fitted only with a suitable Bloch-Gruneisen formula in the whole temperature range, even though we are able to calculate a well defined transport Debye temperature. The observed temperature dependent resistivity seems to suggest a non phonon-mediated superconducting pairing, supporting a magnetic fluctuation mechanism as the likely glue for the superconducting coupling. Comment: 5 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1812.09957 Zobrazit plný text záznamu View this record from Arxiv