Transport anomalies in the layered compound BaPt4Se6
Abstract We report a layered ternary selenide BaPt4Se6 featuring sesqui-selenide Pt2Se3 layers sandwiched by Ba atoms. The Pt2Se3 layers in this compound can be derived from the Dirac-semimetal PtSe2 phase with Se vacancies that form a honeycomb structure. This structure results in a Pt (VI) and Pt...
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Nature Portfolio
2021
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oai:doaj.org-article:7fffb5377cdc47adbeacc1289f1279572021-12-02T17:27:21ZTransport anomalies in the layered compound BaPt4Se610.1038/s41535-021-00382-x2397-4648https://doaj.org/article/7fffb5377cdc47adbeacc1289f1279572021-09-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00382-xhttps://doaj.org/toc/2397-4648Abstract We report a layered ternary selenide BaPt4Se6 featuring sesqui-selenide Pt2Se3 layers sandwiched by Ba atoms. The Pt2Se3 layers in this compound can be derived from the Dirac-semimetal PtSe2 phase with Se vacancies that form a honeycomb structure. This structure results in a Pt (VI) and Pt (II) mixed-valence compound with both PtSe6 octahedra and PtSe4 square net coordination configurations. Temperature-dependent electrical transport measurements suggest two distinct anomalies: a resistivity crossover, mimic to the metal-insulator (M-I) transition at ~150 K, and a resistivity plateau at temperatures below 10 K. The resistivity crossover is not associated with any structural, magnetic, or charge order modulated phase transitions. Magnetoresistivity, Hall, and heat capacity measurements concurrently suggest an existing hidden state below 5 K in this system. Angle-resolved photoemission spectroscopy measurements reveal a metallic state and no dramatic reconstruction of the electronic structure up to 200 K.Sheng LiYichen ZhangHanlin WuHuifei ZhaiWenhao LiuDaniel Peirano PetitJi Seop OhJonathan DenlingerGregory T. McCandlessJulia Y. ChanRobert J. BirgeneauGang LiMing YiBing LvNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-7 (2021) |
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DOAJ |
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DOAJ |
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EN |
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Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 |
| spellingShingle |
Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Sheng Li Yichen Zhang Hanlin Wu Huifei Zhai Wenhao Liu Daniel Peirano Petit Ji Seop Oh Jonathan Denlinger Gregory T. McCandless Julia Y. Chan Robert J. Birgeneau Gang Li Ming Yi Bing Lv Transport anomalies in the layered compound BaPt4Se6 |
| description |
Abstract We report a layered ternary selenide BaPt4Se6 featuring sesqui-selenide Pt2Se3 layers sandwiched by Ba atoms. The Pt2Se3 layers in this compound can be derived from the Dirac-semimetal PtSe2 phase with Se vacancies that form a honeycomb structure. This structure results in a Pt (VI) and Pt (II) mixed-valence compound with both PtSe6 octahedra and PtSe4 square net coordination configurations. Temperature-dependent electrical transport measurements suggest two distinct anomalies: a resistivity crossover, mimic to the metal-insulator (M-I) transition at ~150 K, and a resistivity plateau at temperatures below 10 K. The resistivity crossover is not associated with any structural, magnetic, or charge order modulated phase transitions. Magnetoresistivity, Hall, and heat capacity measurements concurrently suggest an existing hidden state below 5 K in this system. Angle-resolved photoemission spectroscopy measurements reveal a metallic state and no dramatic reconstruction of the electronic structure up to 200 K. |
| format |
article |
| author |
Sheng Li Yichen Zhang Hanlin Wu Huifei Zhai Wenhao Liu Daniel Peirano Petit Ji Seop Oh Jonathan Denlinger Gregory T. McCandless Julia Y. Chan Robert J. Birgeneau Gang Li Ming Yi Bing Lv |
| author_facet |
Sheng Li Yichen Zhang Hanlin Wu Huifei Zhai Wenhao Liu Daniel Peirano Petit Ji Seop Oh Jonathan Denlinger Gregory T. McCandless Julia Y. Chan Robert J. Birgeneau Gang Li Ming Yi Bing Lv |
| author_sort |
Sheng Li |
| title |
Transport anomalies in the layered compound BaPt4Se6 |
| title_short |
Transport anomalies in the layered compound BaPt4Se6 |
| title_full |
Transport anomalies in the layered compound BaPt4Se6 |
| title_fullStr |
Transport anomalies in the layered compound BaPt4Se6 |
| title_full_unstemmed |
Transport anomalies in the layered compound BaPt4Se6 |
| title_sort |
transport anomalies in the layered compound bapt4se6 |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/7fffb5377cdc47adbeacc1289f127957 |
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