TY - JOUR
T1 - Crystalline electric field level scheme of non-centrosymmetric CeRhSi3 and CeIrSi3
AU - Ueta, Daichi
AU - Kobuke, Tomohiro
AU - Shibata, Hiroki
AU - Yoshida, Masahiro
AU - Ikeda, Yoichi
AU - Itoh, Shinichi
AU - Yokoo, Tetsuya
AU - Masuda, Takatsugu
AU - Yoshizawa, Hideki
N1 - Funding Information:
The neutron scattering experiments were approved by the Neutron Scattering Program Advisory Committee of the Institute of Materials Structure Science, High Energy Accelerator Research Organization (Nos. 2016S01, 2017S01, 2020S01, and 2021S01). One of the authors (D.U.) would like to thank Dr. R. Okuma for helping building a program to write a schematic drawing of the wave function.
Publisher Copyright:
© 2021 The Physical Society of Japan
PY - 2021/10/15
Y1 - 2021/10/15
N2 - One of the consequences of antisymmetric spin–orbit interactions due to a lack of inversion symmetry are unusually large upper critical fields observed in heavy-electron superconductors. The upper critical fields of non-centrosymmetric CeRhSi3 and CeIrSi3 cannot be explained by the BCS theory. In order to elucidate the mechanism of the anomalous upper critical fields of superconductivity, we have performed inelastic neutron scattering experiments using polycrystalline samples of CeRhSi3 and CeIrSi3 to determine the crystalline electric field level scheme. The crystalline electric field excitations of CeRhSi3 and CeIrSi3 were observed at around 19, 35 and 24, 41 meV, respectively. In this paper, we categorize the physical properties of the CeTX3 system and discuss the mechanism of anomalous superconductivity and the influence of f-electrons.
AB - One of the consequences of antisymmetric spin–orbit interactions due to a lack of inversion symmetry are unusually large upper critical fields observed in heavy-electron superconductors. The upper critical fields of non-centrosymmetric CeRhSi3 and CeIrSi3 cannot be explained by the BCS theory. In order to elucidate the mechanism of the anomalous upper critical fields of superconductivity, we have performed inelastic neutron scattering experiments using polycrystalline samples of CeRhSi3 and CeIrSi3 to determine the crystalline electric field level scheme. The crystalline electric field excitations of CeRhSi3 and CeIrSi3 were observed at around 19, 35 and 24, 41 meV, respectively. In this paper, we categorize the physical properties of the CeTX3 system and discuss the mechanism of anomalous superconductivity and the influence of f-electrons.
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U2 - 10.7566/JPSJ.90.104706
DO - 10.7566/JPSJ.90.104706
M3 - Article
AN - SCOPUS:85114943507
SN - 0031-9015
VL - 90
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 10
M1 - 104706
ER -