Pressure-induced superconductivity in topological heterostructure (PbSe)5(Bi2Se3)6

Cuiying Pei; Peng Zhu; Bingtan Li; Yi Zhao; Lingling Gao; Changhua Li; Shihao Zhu; Qinghua Zhang; Tianping Ying; Lin Gu; Bo Gao; Huiyang Gou; Yansun Yao; Jian Sun; Hanyu Liu; Yulin Chen; Zhiwei Wang; Yugui Yao; Yanpeng Qi

doi:10.1007/s40843-022-2422-3

Pressure-induced superconductivity in topological heterostructure (PbSe)₅(Bi₂Se₃)₆

Cuiying Pei, Peng Zhu, Bingtan Li, Yi Zhao, Lingling Gao, Changhua Li, Shihao Zhu, Qinghua Zhang, Tianping Ying, Lin Gu, Bo Gao, Huiyang Gou, Yansun Yao, Jian Sun, Hanyu Liu, Yulin Chen, Zhiwei Wang^*, Yugui Yao, Yanpeng Qi^*

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Recently, the natural heterostructure of (PbSe)₅-(Bi₂Se₃)₆ has been theoretically predicted and experimentally confirmed as a topological insulator. In this work, we induce superconductivity in (PbSe)₅(Bi₂Se₃)₆ by implementing high pressures. As the pressure increases up to 10 GPa, superconductivity with a critical temperature (T _c) ~ 4.6 K suddenly appears, which is followed by an abrupt decrease. Remarkably, upon further compression above 30 GPa, a new superconducting state arises, where pressure raises the T _c to an unsaturated 6.0 K within the limit of our research. Combining X-ray diffraction and Raman spectroscopy, we suggest that the emergence of the two distinct superconducting states occurs concurrently with the pressure-induced structural transition in this topological heterostructure (PbSe)₅(Bi₂Se₃)₆.[Figure not available: see fulltext.].

Translated title of the contribution	拓扑异质结(PbSe)5(Bi2Se3)6高压诱导超导电性研究
Original language	English
Pages (from-to)	2822-2828
Number of pages	7
Journal	Science China Materials
Volume	66
Issue number	7
DOIs	https://doi.org/10.1007/s40843-022-2422-3
Publication status	Published - Jul 2023

Keywords

heterostructure
high pressure
superconductivity
topological material

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10.1007/s40843-022-2422-3

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title = "Pressure-induced superconductivity in topological heterostructure (PbSe)5(Bi2Se3)6",

abstract = "Recently, the natural heterostructure of (PbSe)5-(Bi2Se3)6 has been theoretically predicted and experimentally confirmed as a topological insulator. In this work, we induce superconductivity in (PbSe)5(Bi2Se3)6 by implementing high pressures. As the pressure increases up to 10 GPa, superconductivity with a critical temperature (T c) \textasciitilde{} 4.6 K suddenly appears, which is followed by an abrupt decrease. Remarkably, upon further compression above 30 GPa, a new superconducting state arises, where pressure raises the T c to an unsaturated 6.0 K within the limit of our research. Combining X-ray diffraction and Raman spectroscopy, we suggest that the emergence of the two distinct superconducting states occurs concurrently with the pressure-induced structural transition in this topological heterostructure (PbSe)5(Bi2Se3)6.[Figure not available: see fulltext.].",

keywords = "heterostructure, high pressure, superconductivity, topological material",

author = "Cuiying Pei and Peng Zhu and Bingtan Li and Yi Zhao and Lingling Gao and Changhua Li and Shihao Zhu and Qinghua Zhang and Tianping Ying and Lin Gu and Bo Gao and Huiyang Gou and Yansun Yao and Jian Sun and Hanyu Liu and Yulin Chen and Zhiwei Wang and Yugui Yao and Yanpeng Qi",

note = "Publisher Copyright: {\textcopyright} 2023, Science China Press.",

year = "2023",

month = jul,

doi = "10.1007/s40843-022-2422-3",

language = "English",

volume = "66",

pages = "2822--2828",

journal = "Science China Materials",

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publisher = "Science China Press",

number = "7",

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TY - JOUR

T1 - Pressure-induced superconductivity in topological heterostructure (PbSe)5(Bi2Se3)6

AU - Pei, Cuiying

AU - Zhu, Peng

AU - Li, Bingtan

AU - Zhao, Yi

AU - Gao, Lingling

AU - Li, Changhua

AU - Zhu, Shihao

AU - Zhang, Qinghua

AU - Ying, Tianping

AU - Gu, Lin

AU - Gao, Bo

AU - Gou, Huiyang

AU - Yao, Yansun

AU - Sun, Jian

AU - Liu, Hanyu

AU - Chen, Yulin

AU - Wang, Zhiwei

AU - Yao, Yugui

AU - Qi, Yanpeng

PY - 2023/7

Y1 - 2023/7

N2 - Recently, the natural heterostructure of (PbSe)5-(Bi2Se3)6 has been theoretically predicted and experimentally confirmed as a topological insulator. In this work, we induce superconductivity in (PbSe)5(Bi2Se3)6 by implementing high pressures. As the pressure increases up to 10 GPa, superconductivity with a critical temperature (T c) ~ 4.6 K suddenly appears, which is followed by an abrupt decrease. Remarkably, upon further compression above 30 GPa, a new superconducting state arises, where pressure raises the T c to an unsaturated 6.0 K within the limit of our research. Combining X-ray diffraction and Raman spectroscopy, we suggest that the emergence of the two distinct superconducting states occurs concurrently with the pressure-induced structural transition in this topological heterostructure (PbSe)5(Bi2Se3)6.[Figure not available: see fulltext.].

AB - Recently, the natural heterostructure of (PbSe)5-(Bi2Se3)6 has been theoretically predicted and experimentally confirmed as a topological insulator. In this work, we induce superconductivity in (PbSe)5(Bi2Se3)6 by implementing high pressures. As the pressure increases up to 10 GPa, superconductivity with a critical temperature (T c) ~ 4.6 K suddenly appears, which is followed by an abrupt decrease. Remarkably, upon further compression above 30 GPa, a new superconducting state arises, where pressure raises the T c to an unsaturated 6.0 K within the limit of our research. Combining X-ray diffraction and Raman spectroscopy, we suggest that the emergence of the two distinct superconducting states occurs concurrently with the pressure-induced structural transition in this topological heterostructure (PbSe)5(Bi2Se3)6.[Figure not available: see fulltext.].

KW - heterostructure

KW - high pressure

KW - superconductivity

KW - topological material

UR - https://www.scopus.com/pages/publications/85159382382

U2 - 10.1007/s40843-022-2422-3

DO - 10.1007/s40843-022-2422-3

M3 - Article

AN - SCOPUS:85159382382

SN - 2095-8226

VL - 66

SP - 2822

EP - 2828

JO - Science China Materials

JF - Science China Materials

IS - 7

ER -

Pressure-induced superconductivity in topological heterostructure (PbSe)₅(Bi₂Se₃)₆

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