Pressure-induced quantum phase transition in the itinerant ferromagnet UCoGa

0487136 - FZÚ 2018 RIV US eng J - Journal Article
Míšek, Martin - Prokleška, J. - Opletal, P. - Proschek, P. - Kaštil, Jiří - Kamarád, Jiří - Sechovský, V.
Pressure-induced quantum phase transition in the itinerant ferromagnet UCoGa.
AIP Advances. Roč. 7, č. 5 (2017), s. 1-4, č. článku 055712. E-ISSN 2158-3226
R&D Projects: GA ČR GA16-06422S
Institutional support: RVO:68378271
Keywords : quantum phase transition * high pressure * itinerant ferromagnet * UCoGa
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.653, year: 2017
http://aip.scitation.org/doi/10.1063/1.4976300

The work is focused on probing the expected ferro- to paramagnetic quantum phase transition induced by high pressure in UCoGa. The collinear ferromagnetic ordering of UCoGa below the Curie temperature 48 K was observed up to pressure 6 GPa. A sharp drop of magnetic moment and a sudden disappearance of the magnetic order was detected at pressure 6.5 GPa, suggesting the first-order phase transition. The tricritical point of the UCoGa phase diagram lies at approximately 30 K and 6 GPa.

Permanent Link: http://hdl.handle.net/11104/0281797