Quantum criticality in Ce(Al1−xCox)2

✍ Scribed by A.V. Bogach; V.V. Glushkov; S.V. Demishev; G.S. Burkhanov; O.D. Chistyakov; N.E. Sluchanko

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 129 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.10.039

✦ Synopsis

To search for the quantum critical point (QCP) in the transit from antiferromagnetic metal CeAl 2 to paramagnetic superconductor CeCo 2 , transport (Hall coefficient, resistivity) and magnetic properties have been studied on the high-quality polycrystalline samples of solid solutions Ce(Al 1Àx M x ) 2 (xo0.1, M-Co, Ni) in a wide temperature range 1.8-300 K. The analysis of Hall mobility and magnetic susceptibility parameters shows the significant anomalies in the vicinity of Co impurity concentration xE1.5-2 at%, that possibly may be considered as a QCP in these strongly correlated electron systems.