TY - JOUR
T1 - A semimetallic state in La3Ir3O11 with the KSbO3 structure
AU - Aoyama, Takuya
AU - Emi, Kazutoshi
AU - Tabata, Chihiro
AU - Nambu, Yusuke
AU - Nakao, Hironori
AU - Yamauchi, Touru
AU - Ohgushi, Kenya
N1 - Funding Information:
Acknowledgments We are grateful to S. Kimura for experimental help and fruitful discussions. The present work is financially supported by JSPS KAKENHI Nos. 16K17732, 19H05823, 19K21837, 17H05474, 19H04685, 18H01159, 17K05531, 17H06137, 15H05885, 16H01062, and 18H04302, and Murata Science Foundation. This work is partially performed using facilities of the Institute for Solid State Physics, the University of Tokyo. The XAS measurements were performed under the approval of the Photon Factory Program Advisory Committee (Proposal No. 2016G660).
Funding Information:
We are grateful to S. Kimura for experimental help and fruitful discussions. The present work is financially supported by JSPS KAKENHI Nos. 16K17732, 19H05823, 19K21837, 17H05474, 19H04685, 18H01159, 17K05531, 17H06137, 15H05885, 16H01062, and 18H04302, and Murata Science Foundation. This work is partially performed using facilities of the Institute for Solid State Physics, the University of Tokyo. The XAS measurements were performed under the approval of the Photon Factory Program Advisory Committee (Proposal No. 2016G660).
Publisher Copyright:
© 2019 The Physical Society of Japan.
PY - 2019
Y1 - 2019
N2 - Electronic properties of singlecrystalline La3Ir3O11, which hosts strongly spin–orbit entangled 5d electrons on the geometrically frustrated KSbO3-type structure, have been investigated. The magnitude of spin–orbit coupling in the 5d band was estimated from the X-ray absorption spectrum. Electrical resistivity and Hall measurements reveal a crossover from dominant hole carriers at room temperature into dominant electron carriers at low temperature, indicating that La3Ir3O11 is a semimetallic state. A small anomaly appears in the specific heat and electrical resistivity at around 3.5 K, suggesting a possible magnetic transition. On applying high pressures up to 13 GPa, the state changes into an incoherent state characterized by a small temperature dependence, and the possible magnetic transition has been suppressed.
AB - Electronic properties of singlecrystalline La3Ir3O11, which hosts strongly spin–orbit entangled 5d electrons on the geometrically frustrated KSbO3-type structure, have been investigated. The magnitude of spin–orbit coupling in the 5d band was estimated from the X-ray absorption spectrum. Electrical resistivity and Hall measurements reveal a crossover from dominant hole carriers at room temperature into dominant electron carriers at low temperature, indicating that La3Ir3O11 is a semimetallic state. A small anomaly appears in the specific heat and electrical resistivity at around 3.5 K, suggesting a possible magnetic transition. On applying high pressures up to 13 GPa, the state changes into an incoherent state characterized by a small temperature dependence, and the possible magnetic transition has been suppressed.
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U2 - 10.7566/JPSJ.88.093706
DO - 10.7566/JPSJ.88.093706
M3 - Article
AN - SCOPUS:85071233337
SN - 0031-9015
VL - 88
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 9
M1 - 093706
ER -