Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films
The surface of a topological crystalline insulator (TCI) carries an even number of Dirac cones protected by crystalline symmetry. We epitaxially grew high-quality Pb[subscript 1−x]Sn[subscript x]Te(111) films and investigated the TCI phase by in situ angle-resolved photoemission spectroscopy. Pb[sub...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/88618 https://orcid.org/0000-0002-8803-1017 |
| _version_ | 1826188817091002368 |
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| author | Yan, Chenhui Liu, Junwei Zang, Yunyi Wang, Jianfeng Wang, Zhenyu Wang, Peng Zhang, Zhi-Dong Wang, Lili Ma, Xucun Ji, Shuaihua He, Ke Fu, Liang Duan, Wenhui Xue, Qi-Kun Chen, Xi |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Yan, Chenhui Liu, Junwei Zang, Yunyi Wang, Jianfeng Wang, Zhenyu Wang, Peng Zhang, Zhi-Dong Wang, Lili Ma, Xucun Ji, Shuaihua He, Ke Fu, Liang Duan, Wenhui Xue, Qi-Kun Chen, Xi |
| author_sort | Yan, Chenhui |
| collection | MIT |
| description | The surface of a topological crystalline insulator (TCI) carries an even number of Dirac cones protected by crystalline symmetry. We epitaxially grew high-quality Pb[subscript 1−x]Sn[subscript x]Te(111) films and investigated the TCI phase by in situ angle-resolved photoemission spectroscopy. Pb[subscript 1−x]Sn[subscript x]Te(111) films undergo a topological phase transition from a trivial insulator to TCI via increasing the Sn/Pb ratio, accompanied by a crossover from n-type to p-type doping. In addition, a hybridization gap is opened in the surface states when the thickness of the film is reduced to the two-dimensional limit. The work demonstrates an approach to manipulating the topological properties of TCI, which is of importance for future fundamental research and applications based on TCI. |
| first_indexed | 2024-09-23T08:05:28Z |
| format | Article |
| id | mit-1721.1/88618 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:05:28Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/886182022-09-30T07:24:13Z Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films Yan, Chenhui Liu, Junwei Zang, Yunyi Wang, Jianfeng Wang, Zhenyu Wang, Peng Zhang, Zhi-Dong Wang, Lili Ma, Xucun Ji, Shuaihua He, Ke Fu, Liang Duan, Wenhui Xue, Qi-Kun Chen, Xi Massachusetts Institute of Technology. Department of Physics Fu, Liang The surface of a topological crystalline insulator (TCI) carries an even number of Dirac cones protected by crystalline symmetry. We epitaxially grew high-quality Pb[subscript 1−x]Sn[subscript x]Te(111) films and investigated the TCI phase by in situ angle-resolved photoemission spectroscopy. Pb[subscript 1−x]Sn[subscript x]Te(111) films undergo a topological phase transition from a trivial insulator to TCI via increasing the Sn/Pb ratio, accompanied by a crossover from n-type to p-type doping. In addition, a hybridization gap is opened in the surface states when the thickness of the film is reduced to the two-dimensional limit. The work demonstrates an approach to manipulating the topological properties of TCI, which is of importance for future fundamental research and applications based on TCI. United States. Dept. of Energy. Division of Materials Sciences and Engineering (Award DE-SC0010526) National Science Foundation (U.S.) (Grant DMR-1231319) 2014-08-08T15:48:57Z 2014-08-08T15:48:57Z 2014-05 2014-01 2014-07-23T20:49:15Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/88618 Yan, Chenhui, Junwei Liu, Yunyi Zang, Jianfeng Wang, Zhenyu Wang, Peng Wang, Zhi-Dong Zhang, et al. “Experimental Observation of Dirac-Like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films.” Physical Review Letters 112, no. 18 (May 2014). © 2014 American Physical Society https://orcid.org/0000-0002-8803-1017 en http://dx.doi.org/10.1103/PhysRevLett.112.186801 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Yan, Chenhui Liu, Junwei Zang, Yunyi Wang, Jianfeng Wang, Zhenyu Wang, Peng Zhang, Zhi-Dong Wang, Lili Ma, Xucun Ji, Shuaihua He, Ke Fu, Liang Duan, Wenhui Xue, Qi-Kun Chen, Xi Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films |
| title | Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films |
| title_full | Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films |
| title_fullStr | Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films |
| title_full_unstemmed | Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films |
| title_short | Experimental Observation of Dirac-like Surface States and Topological Phase Transition in Pb[subscript 1-x]Sn[subscript x]Te(111) Films |
| title_sort | experimental observation of dirac like surface states and topological phase transition in pb subscript 1 x sn subscript x te 111 films |
| url | http://hdl.handle.net/1721.1/88618 https://orcid.org/0000-0002-8803-1017 |
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