Probing magnetism in the vortex phase of PuCoGa.sub.5./sub. by X-ray magnetic circular dichroism

0482220 - FZÚ 2018 RIV US eng J - Článek v odborném periodiku
Magnani, N. - Eloirdi, R. - Wilhelm, F. - Colineau, E. - Griveau, J.C. - Shick, Alexander - Lander, G.H. - Rogalev, A. - Caciuffo, R.
Probing magnetism in the vortex phase of PuCoGa₅ by X-ray magnetic circular dichroism.
Physical Review Letters. Roč. 119, č. 15 (2017), s. 1-6, č. článku 157204. ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA ČR GA15-07172S
Institucionální podpora: RVO:68378271
Klíčová slova: XMCD * superconductivity * strong electron correlations
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 8.839, rok: 2017

We measure x-ray magnetic circular dichroism (XMCD) spectra at the Pu M4,5 absorption edges from a newly prepared high-quality single crystal of the heavy-fermion superconductor 242PuCoGa5, exhibiting a critical temperature Tc 1⁄4 18.7 K. This observation is in agreement with theoretical models claiming that the Pu atoms in PuCoGa5 have a nonmagnetic singlet ground state resulting from the hybridization of the conduction electrons with the intermediate-valence 5f electronic shell.
Trvalý link: http://hdl.handle.net/11104/0277607