Magnetic and Structural Phase Transitions of EuFe2As2 Studied via Neutron and Resonant X-ray Scattering
SCIE
SCOPUS
- Title
- Magnetic and Structural Phase Transitions of EuFe2As2 Studied via Neutron and Resonant X-ray Scattering
- Authors
- Koo, J; Park, J; Cho, SK; Kim, KD; Park, SY; Jeong, YH; Park, YJ; Koo, TY; Hong, KP; Lee, CH; Kim, JY; Cho, BK; Lee, KB; Kim, HJ
- Date Issued
- 2010-11
- Publisher
- PHYSICAL SOC JAPAN
- Abstract
- Employing neutron and resonant x-ray scatterings, we have investigated the magnetic and structural phase transitions of a high quality single crystal of undoped pnictide EuFe2As2 to reveal the nature of these transitions. It has been found that structural order parameter delta = (a - b)/(a + b) and the square of Fe magnetic order parameter have the same temperature dependence, which is attributed to the linear-quadratic coupling between structural and Fe magnetic order parameters in the Landau free-energy expansion. This result also suggests that Fe magnetic order drives the structural phase transition which is the weak first-order phase transition.
- Keywords
- EuFe2As2; neutron and resonant x-ray scattering; coupling between structural and magnetic order parameters; SUPERCONDUCTIVITY; POLARIZATION; DIFFRACTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25377
- DOI
- 10.1143/JPSJ.79.114708
- ISSN
- 0031-9015
- Article Type
- Article
- Citation
- JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, vol. 79, no. 11, 2010-11
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.