Low-temperature electrical resistivity of

✍ Scribed by F. Weickert; P. Gegenwart; J. Ferstl; C. Geibel; F. Steglich

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 168 KB
• Volume: 378-380
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2006.01.029

✦ Synopsis

Substitution of Yb-atoms with La in Yb 1Àx La x Rh 2 Si 2 leads to an increase of the Kondo temperature and suppression of antiferromagnetic order. Here, we present low-temperature ðTX20 mKÞ electrical resistivity measurements on x ¼ 0:05 and x ¼ 0:1 single crystals at various magnetic fields. For x ¼ 0:05, a linear temperature dependence is observed for 0pBp0:04 T which turns into Landau Fermi liquid (LFL) behavior Dr ¼ AT 2 at larger fields. For x ¼ 0:1, LFL behavior is found already at 0.02 T. The evolution of AðBÞ suggests x ¼ 0:05 and x ¼ 0:1 to be located on the magnetically ordered and LFL side of the quantum critical point, respectively.