Structural properties, magnetic order and electronic transport in single crystalline UPt2Si2 |
| |
Authors: | M. Bleckmann A. Otop R. Feyerherm A. Loose J.A. Mydosh |
| |
Affiliation: | a Institut für Physik der Kondensierten Materie, TU Braunschweig, D-38106 Braunschweig, Germany b Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany c Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, The Netherlands d Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan |
| |
Abstract: | We present a detailed comparison of the physical properties of as-cast and annealed single crystalline UPt2Si2, a compound whose properties we have shown to be governed by strain disorder on the Pt/Si ligand sites. Contrary to common knowledge, and to our surprise, from our data we do not observe a significant improvement of the physical properties of UPt2Si2 upon annealing at 900 °C for one week. We attribute this to the specific way the strain disorder is produced in UPt2Si2 by presenting evidence that it results from a first order phase transition at ambient temperatures. We discuss the implications of such phase transitions occurring at comparatively low temperatures for the ground state properties of heavy fermion systems and related correlated electron materials. |
| |
Keywords: | Heavy fermion Disorder |
本文献已被 ScienceDirect 等数据库收录! |
|