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Title: | Normal-state properties of the antiperovskite oxide Sr₃₋xSnO revealed by ¹¹⁹Sn-NMR |
Authors: | Kitagawa, Shunsaku https://orcid.org/0000-0002-1855-4760 (unconfirmed) Ishida, Kenji https://orcid.org/0000-0003-2945-8755 (unconfirmed) Oudah, Mohamed Hausmann, Jan Niklas Ikeda, Atsutoshi https://orcid.org/0000-0002-9345-2967 (unconfirmed) Yonezawa, Shingo https://orcid.org/0000-0002-7476-3604 (unconfirmed) Maeno, Yoshiteru |
Author's alias: | 北川, 俊作 石田, 憲二 池田, 敦俊 米澤, 進吾 前野, 悦輝 |
Issue Date: | 21-Sep-2018 |
Publisher: | American Physical Society (APS) |
Journal title: | Physical Review B |
Volume: | 98 |
Issue: | 10 |
Thesis number: | 100503(R) |
Abstract: | We have performed ¹¹⁹Sn-NMR measurements on the antiperovskite oxide superconductor Sr₃₋xSnOto investigate how its normal state changes with the Sr deficiency. A two-peak structure was observed in the NMR spectra of all the measured samples. This suggests that the phase separation tends to occur between the nearly stoichiometric and heavily Sr-deficient Sr₃₋xSnO phases. The measurement of the nuclear spin-lattice relaxation rate 1/T₁ indicates that the Sr-deficient phase shows a conventional metallic behavior due to the heavy hole doping. In contrast, the nearly stoichiometric phase exhibits unusual temperature dependence of 1/T₁, attributable to the presence of a Dirac-electron band. |
Rights: | ©2018 American Physical Society |
URI: | http://hdl.handle.net/2433/235675 |
DOI(Published Version): | 10.1103/PhysRevB.98.100503 |
Appears in Collections: | Journal Articles |
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