Mass enhancement of nearly trivalent compound EuCo2Si2: Studied by the de Haas-van Alphen experiments and energy band calculations

Yoshichika O'Nuki, Ai Nakamura, Dai Aoki, Mounir Boukahil, Yoshinori Haga, Tetsuya Takeuchi, Hisatomo Harima, Masato Hedo, Takao Nakama

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

We succeeded in growing single crystals of EuCo2Si2 by the Bridgman method, and carried out the de Haas-van Alphen (dHvA) experiments. EuCo2Si2 was previously studied from a viewpoint of the trivalent electronic state on the basis of the magnetic susceptibility and X-ray absorption experiments, whereas most of the other Eu compounds order magnetically, with the divalent electronic state. The detected dHvA branches in the present experiments are found to be explained by the results of the full potential linearized augmented plane wave energy band calculations on the basis of a local density approximation (LDA) for YCo2Si2 (LDA) and EuCo2Si2 (LDA + U), revealing the trivalent electronic state. The detected cyclotron effective masses are moderately large, ranging from 1.2 to 2.9 m0.

Original languageEnglish
Article number012049
JournalJournal of Physics: Conference Series
Volume592
Issue number1
DOIs
Publication statusPublished - 2014
Event2014 International Conference on Strongly Correlated Electron Systems, SCES 2014 - Grenoble, France
Duration: 2014 Jul 72014 Jul 14

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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