TY - JOUR
T1 - Heavy fermions and unconventional superconductivity in high-quality single crystals of rare-earth and actinide compounds
AU - Ōnuki, Yoshichika
AU - Settai, Rikio
AU - Sugiyama, Kiyohiro
AU - Takeuchi, Tetsuya
AU - Honda, Fuminori
AU - Haga, Yoshinori
AU - Yamamoto, Etsuji
AU - Matsuda, Tatsuma D.
AU - Tateiwa, Naoyuki
AU - Aoki, Dai
AU - Sheikin, Ilya
AU - Harima, Hisatomo
N1 - Funding Information:
by Scientific Research (B)(21340102), and by Scientific Research for Young Scientist (B)(21740256) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. This work was also supported by the Exciting Leading-Edge Research Project “Heavy Electrons and Superconductivity produced by High Quality Single Crystal and High Pressure Techniques” at Osaka University.
Funding Information:
We are very grateful to Profs. Y. Kitaoka and K. Miyake for fruitful collaborations and discussions. This work was supported by Grant-in-Aid for Scientific Research on Specially Promoted Research (No. 20001004), Osaka University; the Global COE Program “Core Research and Engineering of Advanced Materials - Interdisciplinary Education Center for Materials Science” (No. G10); by a Grant-in-Aid for Scientific Research on Innovative Areas “Heavy Electrons” (20102002, 21102511),
PY - 2013/8
Y1 - 2013/8
N2 - The f-electron system in rare-earth and actinide compounds exhibit a variety of characteristic properties including heavy fermions and unconventional superconductivity. The Fermi surface properties in rare-earth and actinide compounds are clarified by the de Haas-van Alphen experiments on the basis of the results of energy band calculations. The effect of pressure on the electronic states of CeRhIn 5 , CeIrSi 3 , and YbIr 2 Zn 20 is studied in magnetic fields. An electronic instability, including unconventional superconductivity, occurs at 2.4 GPa in CeRhIn 5 and 2.6 GPa in CeIrSi 3 . An abrupt non-linear increase in the magnetization, namely, a metamagnetic behavior, is found in the heavy fermion compounds, including YbT 2 Zn 20 (T: Co, Rh, Ir). A super-heavy fermion state with a specific heat coefficient of 10 J/(K 2 ·mol) is realized in YbIr 2 Zn 20 under pressure.
AB - The f-electron system in rare-earth and actinide compounds exhibit a variety of characteristic properties including heavy fermions and unconventional superconductivity. The Fermi surface properties in rare-earth and actinide compounds are clarified by the de Haas-van Alphen experiments on the basis of the results of energy band calculations. The effect of pressure on the electronic states of CeRhIn 5 , CeIrSi 3 , and YbIr 2 Zn 20 is studied in magnetic fields. An electronic instability, including unconventional superconductivity, occurs at 2.4 GPa in CeRhIn 5 and 2.6 GPa in CeIrSi 3 . An abrupt non-linear increase in the magnetization, namely, a metamagnetic behavior, is found in the heavy fermion compounds, including YbT 2 Zn 20 (T: Co, Rh, Ir). A super-heavy fermion state with a specific heat coefficient of 10 J/(K 2 ·mol) is realized in YbIr 2 Zn 20 under pressure.
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U2 - 10.3938/jkps.63.409
DO - 10.3938/jkps.63.409
M3 - Article
AN - SCOPUS:84883025884
SN - 0374-4884
VL - 63
SP - 409
EP - 415
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
IS - 3
ER -