TY - JOUR
T1 - Fully filling-controlled pyrochlore ruthenates
T2 - Emergent ferromagnetic-metal state and geometrical Hall effect
AU - Kaneko, Ryoma
AU - Ueda, Kentaro
AU - Sakai, Shiro
AU - Nomura, Yusuke
AU - Huebsch, Marie Therese
AU - Arita, Ryotaro
AU - Tokura, Yoshinori
N1 - Funding Information:
We thank Y. Kaneko and A. Kikkawa for helpful advice about crystal growth. This work was supported by the Japan Society for the Promotion of Science (KAKENHI; Grant No. 19K14647) from MEXT and by CREST (Grants No. JPMJCR16F1 and No. JPMJCR1874) from the Japan Science and Technology Agency.
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/5/17
Y1 - 2021/5/17
N2 - Carrier doping to the Mott insulator is essential to produce highly correlated metals with emergent properties. The pyrochlore ruthenates Pr2Ru2O7 (Ru 4d electron number n=4) and Ca2Ru2O7 (n=3) are a Mott insulator and a magnetic bad metal, respectively, due to the strong electron correlation. We investigate magnetotransport properties of (Pr1-xCax)2Ru2O7 in a whole band-filling range, 0≤x≤1. With increasing hole doping x, the system undergoes an insulator-metal transition. When Ca2Ru2O7 is doped with electrons (0.5
AB - Carrier doping to the Mott insulator is essential to produce highly correlated metals with emergent properties. The pyrochlore ruthenates Pr2Ru2O7 (Ru 4d electron number n=4) and Ca2Ru2O7 (n=3) are a Mott insulator and a magnetic bad metal, respectively, due to the strong electron correlation. We investigate magnetotransport properties of (Pr1-xCax)2Ru2O7 in a whole band-filling range, 0≤x≤1. With increasing hole doping x, the system undergoes an insulator-metal transition. When Ca2Ru2O7 is doped with electrons (0.5
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U2 - 10.1103/PhysRevB.103.L201111
DO - 10.1103/PhysRevB.103.L201111
M3 - Article
AN - SCOPUS:85107045847
VL - 103
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 20
M1 - L201111
ER -