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Metal-insulator transition in La1-xSrxTiO3 and Y1-xCaxTiO3 investigated by specific-heat measurements
| Title: | Metal-insulator transition in La1-xSrxTiO3 and Y1-xCaxTiO3 investigated by specific-heat measurements |
| Authors: | Kumagai, K.1 Browse this author →KAKEN DB | | Suzuki, T. Browse this author | | Taguchi, Y. Browse this author | | Okada, Y. Browse this author | | Fujishima, Y. Browse this author | | Tokura, Y. Browse this author |
| Authors(alt): | 熊谷, 健一1 |
| Issue Date: | Sep-1993 |
| Publisher: | American Physical Society |
| Journal Title: | PHYSICAL REVIEW B |
| Volume: | 48 |
| Issue: | 10 |
| Start Page: | 7636 |
| End Page: | 7642 |
| Publisher DOI: | 10.1103/PhysRevB.48.7636 |
| Abstract: | The carrier-doping (or band-filling) dependence of electronic states has been investigated in the perovskitelike titanate compounds, La1-xSrxTiO3 and Y1-xCaxTiO3, by measurements of the specific heat. The linear temperature coefficient of the electronic specific heat, γ, is enhanced significantly near the metal-insulator phase-transition boundary, indicating a divergent increase of the effective electron mass due to the strong electronic correlation on approaching the metal-insulator transition boundary. The result is argued in comparison with that of the high-Tc cuprates. |
| Rights: | Copyright © 1993 American Physical Society |
| Relation: | http://www.aps.org/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/5893 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 熊谷 健一
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