부산대학교 도서관

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.physb.2006.01.131 Byline: A.V. Silhanek (a), N. Harrison (a), C.D. Batista (b), M. Jaime (a), A. Lacerda (a), H. Amitsuka (c), J.A. Mydosh (d) Keywords: U(Ru, Rh).sub.2Si.sub.2; Quasiparticles; Quantum criticality; Metamagnetism; Electric quadrupoles Abstract: We discuss recent specific heat data in high magnetic fields on URu.sub.2Si.sub.2 and 4% Rh-doped URu.sub.2Si.sub.2 as well as previously published de Haas-van Alphen data at lower magnetic fields in pure URu.sub.2Si.sub.2; both of which are consistent with quasiparticle bands formed from a hybridization between 5f-electron I.sub.5 doublets and regular conduction electrons. The system exhibits itinerant electron metamagnetism that gives rise to a putative quantum critical point at [approximately equal to]34 -37T (depending on the % of Rh) that is subsequently unstable to field-induced phases. Author Affiliation: (a) Los Alamos National Laboratory, MS E536, Los Alamos, NM 87545, USA (b) Los Alamos National Laboratory, MS B262, Los Alamos, NM 87545, USA (c) Graduate School of Science, Hokkaido University, N10W8, Sapporo 060 0810, Japan (d) Max-Planck-Insitut fur Chemische Physik fester Stoffe, 01187 Dresden, Germany