Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties
Topological crystalline insulators (TCIs) have been of great interest in the area of condensed matter physics. We investigated the effect of indium substitution on the crystal structure and transport properties in the TCI system (Pb1−xSnx)1−yInyTe. For samples with a tin concentration x ≤ 50 %...
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| Format: | Article |
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MDPI AG
2017-02-01
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| Series: | Crystals |
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| Online Access: | http://www.mdpi.com/2073-4352/7/2/55 |
| _version_ | 1798006633022881792 |
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| author | Ruidan Zhong John Schneeloch Qiang Li Wei Ku John Tranquada Genda Gu |
| author_facet | Ruidan Zhong John Schneeloch Qiang Li Wei Ku John Tranquada Genda Gu |
| author_sort | Ruidan Zhong |
| collection | DOAJ |
| description | Topological crystalline insulators (TCIs) have been of great interest in the area of condensed matter physics. We investigated the effect of indium substitution on the crystal structure and transport properties in the TCI system (Pb1−xSnx)1−yInyTe. For samples with a tin concentration x ≤ 50 % , the low-temperature resisitivities show a dramatic variation as a function of indium concentration: with up to ∼2% indium doping, the samples show weak-metallic behavior similar to their parent compounds; with ∼6% indium doping, samples have true bulk-insulating resistivity and present evidence for nontrivial topological surface states; with higher indium doping levels, superconductivity was observed, with a transition temperature, T c , positively correlated to the indium concentration and reaching as high as 4.7 K. We address this issue from the view of bulk electronic structure modified by the indium-induced impurity level that pins the Fermi level. The current work summarizes the indium substitution effect on (Pb,Sn)Te, and discusses the topological and superconducting aspects, which can be provide guidance for future studies on this and related systems. |
| first_indexed | 2024-04-11T12:58:47Z |
| format | Article |
| id | doaj.art-da9959c360ff46da94466fa0d7f8f0d8 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T12:58:47Z |
| publishDate | 2017-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-da9959c360ff46da94466fa0d7f8f0d82022-12-22T04:23:01ZengMDPI AGCrystals2073-43522017-02-01725510.3390/cryst7020055cryst7020055Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting PropertiesRuidan Zhong0John Schneeloch1Qiang Li2Wei Ku3John Tranquada4Genda Gu5Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USACondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USACondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USACondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USACondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USACondensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USATopological crystalline insulators (TCIs) have been of great interest in the area of condensed matter physics. We investigated the effect of indium substitution on the crystal structure and transport properties in the TCI system (Pb1−xSnx)1−yInyTe. For samples with a tin concentration x ≤ 50 % , the low-temperature resisitivities show a dramatic variation as a function of indium concentration: with up to ∼2% indium doping, the samples show weak-metallic behavior similar to their parent compounds; with ∼6% indium doping, samples have true bulk-insulating resistivity and present evidence for nontrivial topological surface states; with higher indium doping levels, superconductivity was observed, with a transition temperature, T c , positively correlated to the indium concentration and reaching as high as 4.7 K. We address this issue from the view of bulk electronic structure modified by the indium-induced impurity level that pins the Fermi level. The current work summarizes the indium substitution effect on (Pb,Sn)Te, and discusses the topological and superconducting aspects, which can be provide guidance for future studies on this and related systems.http://www.mdpi.com/2073-4352/7/2/55topological crystalline insulatorcrystal growthsuperconductivity |
| spellingShingle | Ruidan Zhong John Schneeloch Qiang Li Wei Ku John Tranquada Genda Gu Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties Crystals topological crystalline insulator crystal growth superconductivity |
| title | Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties |
| title_full | Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties |
| title_fullStr | Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties |
| title_full_unstemmed | Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties |
| title_short | Indium Substitution Effect on the Topological Crystalline Insulator Family (Pb1−xSnx)1−yInyTe: Topological and Superconducting Properties |
| title_sort | indium substitution effect on the topological crystalline insulator family pb1 xsnx 1 yinyte topological and superconducting properties |
| topic | topological crystalline insulator crystal growth superconductivity |
| url | http://www.mdpi.com/2073-4352/7/2/55 |
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