Pressure-induced phase transitions and superconductivity in a quasi-1-dimensional topological crystalline insulator alpha-Bi4Br4

Li, Xiang1,2; Chen, Dongyun1; Jin, Meiling3; Ma, Dashuai1; Ge, Yanfeng4,5; Sun, Jianping6,7; Guo, Wenhan8; Sun, Hao1; Han, Junfeng1; Xiao, Wende1; Duan, Junxi1; Wang, Qinsheng1; Liu, Cheng-Cheng1; Zou, Ruqiang8; Cheng, Jinguang6,7; Jin, Changqing6,7; Zhou, Jianshi2; Goodenough, John B.2; Zhu, Jinlong3,9; Yao, Yugui1,10,11

2019-09-03

10.1073/pnas.1909276116

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA   影响因子和分区

0027-8424

Great progress has been achieved in the research field of topological states of matter during the past decade. Recently, a quasi-1-dimensional bismuth bromide, Bi4Br4, has been predicted to be a rotational symmetry-protected topological crystalline insulator; it would also exhibit more exotic topological properties under pressure. Here, we report a thorough study of phase transitions and superconductivity in a quasihydrostatically pressurized alpha-Bi4Br4 crystal by performing detailed measurements of electrical resistance, alternating current magnetic susceptibility, and in situ high-pressure single-crystal X-ray diffraction together with first principles calculations. We find a pressure-induced insulator-metal transition between similar to 3.0 and 3.8 GPa where valence and conduction bands cross the Fermi level to form a set of small pockets of holes and electrons. With further increase of pressure, 2 superconductive transitions emerge. One shows a sharp resistance drop to 0 near 6.8 K at 3.8 GPa; the transition temperature gradually lowers with increasing pressure and completely vanishes above 12.0 GPa. Another transition sets in around 9.0 K at 5.5 GPa and persists up to the highest pressure of 45.0 GPa studied in this work. Intriguingly, we find that the first superconducting phase might coexist with a nontrivial rotational symmetry-protected topology in the pressure range of similar to 3.8 to 4.3 GPa; the second one is associated with a structural phase transition from monoclinic C2/m to triclinic P-1 symmetry.

topological materials superconductivity high pressure quasi-1-dimensional bismuth bromide

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英语

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通讯

Chinese Academy of Sciences[2018YFA0305700] ; Chinese Academy of Sciences[11574377] ; Chinese Academy of Sciences[11834016] ; Chinese Academy of Sciences[11874400] ; Chinese Academy of Sciences[XDB25000000] ; Chinese Academy of Sciences[QYZDB-SSW-SLH013]

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Multidisciplinary Sciences

WOS:000485140300022

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BIOLOGY & BIOCHEMISTRY;CLINICAL MEDICINE;MULTIDISCIPLINARY;PLANT & ANIMAL SCIENCE;ENVIRONMENT/ECOLOGY;SOCIAL SCIENCES, GENERAL;MICROBIOLOGY;ECONOMICS BUSINESS;IMMUNOLOGY;MATERIALS SCIENCE;MATHEMATICS;SPACE SCIENCE;MOLECULAR BIOLOGY & GENETICS;PHARMACOLOGY & TOXICOLOGY;CHEMISTRY;PSYCHIATRY/PSYCHOLOGY;NEUROSCIENCE & BEHAVIOR;PHYSICS;GEOSCIENCES;AGRICULTURAL SCIENCES;ENGINEERING

Web of Science

1.Beijing Inst Technol, Sch Phys, Key Lab Adv Optoelect Quantum Architecture & Meas, Minist Educ, Beijing 100081, Peoples R China
2.Univ Texas Austin, Mech Engn Dept, Mat Sci & Engn Program, Austin, TX 78712 USA
3.Ctr High Pressure Sci & Technol Adv Res, Beijing 100094, Peoples R China
4.Yanshan Univ, Sch Sci, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
5.Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Hebei, Peoples R China
6.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
7.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
8.Peking Univ, Beijing Key Lab Theory & Technol Adv Battery Mat, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China
9.Southern Univ Sci & Technol, Phys Dept, Shenzhen 518055, Peoples R China
10.Beijing Inst Technol, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Micronano Ctr, Beijing 100081, Peoples R China
11.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

Li, Xiang,Chen, Dongyun,Jin, Meiling,et al. Pressure-induced phase transitions and superconductivity in a quasi-1-dimensional topological crystalline insulator alpha-Bi4Br4[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(36):17696-17700.

Li, Xiang.,Chen, Dongyun.,Jin, Meiling.,Ma, Dashuai.,Ge, Yanfeng.,...&Yao, Yugui.(2019).Pressure-induced phase transitions and superconductivity in a quasi-1-dimensional topological crystalline insulator alpha-Bi4Br4.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(36),17696-17700.

Li, Xiang,et al."Pressure-induced phase transitions and superconductivity in a quasi-1-dimensional topological crystalline insulator alpha-Bi4Br4".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.36(2019):17696-17700.