Electronic and magnetic properties of rare earth compounds RPt2 Ge2 (R: La-Ho)

Chie Tonohiro, Yasunori Nakano, Fuminori Honda, Tsutomu Yamada, Tetsuya Takeuchi, Kiyohiro Sugiyama, Masayuki Hagiwara, Koichi Kindo, Tatsuma D. Matsuda, Yoshinori Haga, Masato Hedo, Yoshiya Uwatoko, Rikio Settai, Yoshichika Onuki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We succeeded in growing the single crystals of RPt2Ge 2 (R: La-Ho) with the monoclinic LaPt2Ge2- type structure. Most of RPt2Ge2 compounds order antiferromagnetically, approximately following the de Gennes scaling. Among them, CePt2Ge2 with a Néel temperature T N1 - 2.4 K indicates a change of the magnetic structure below T N2 - 1.8 K, with an ordered moment of 0.70μB/Ce. The pressure experiment was also carried out for CePt2Ge2 by measuring the electrical resistivity. The critical pressure, where the Néel temperature becomes zero, is 7-8 GPa at which the heavy fermion state is realized. Superconductivity was, however, not observed experimentally.

Original languageEnglish
Article number114706
Journaljournal of the physical society of japan
Volume78
Issue number11
DOIs
Publication statusPublished - Nov 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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