Thermal expansion of under high pressure

✍ Scribed by Masashi Ohashi; Gendo Oomi; Tomohito Nakano; Yoshiya Uwatoko

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 97 KB
• Volume: 378-380
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2006.01.134

✦ Synopsis

We have carried out the thermal expansion measurement of CePt 3 Si under pressure up to 3.0 GPa. It is found that a maximum in aðTÞ is observed and the temperature showing maximum T m increases significantly with increasing pressure having a coefficient qT m =qP ¼ 4 K=GPa. Assuming that T m corresponds to the Kondo temperature T K , qT K =qP is smaller than that of typical heavy fermion compounds such as CeCu 6 . It comes from the fact that two kinds of interactions, the RKKY interaction and the Kondo effect, are competing each other.