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.

Details

Title
Mass Enhancement of Nearly Trivalent Compound EuCo2Si2: Studied by the de Haas-van Alphen Experiments and Energy Band Calculations
Author
Yoshichika &barO;nuki 1 ; Nakamura, Ai 2 ; Aoki, Dai 3 ; Boukahil, Mounir 4 ; Haga, Yoshinori 5 ; Takeuchi, Tetsuya 6 ; Harima, Hisatomo 7 ; Hedo, Masato 1 ; Nakama, Takao 1 

 Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan 
 Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan 
 Institute for Materials Research, Tohoku University, Oarai, Ibaraki 311-1313, Japan; INAC/SPSMS, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble, France 
 INAC/SPSMS, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble, France 
 Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan 
 Low temperature Center, Osaka University, Toyonaka, Osaka 560-0043, Japan 
 Graduate School of Science, Kobe University, Kobe 657-8501, Japan 
Publication year
2015
Publication date
Mar 2015
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576277731
Copyright
© 2015. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.