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Han W, Feng J, Dong H, Cheng M, Yang L, Yu Y, Du G, Li J, Du Y, Zhang T, Wang Z, Chen B, Shi J, Chen Y. Pressure-Modulated Structural and Magnetic Phase Transitions in Two-Dimensional FeTe: Tetragonal and Hexagonal Polymorphs. NANO LETTERS 2024; 24:966-974. [PMID: 38206580 DOI: 10.1021/acs.nanolett.3c04384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Two-dimensional (2D) Fe chalcogenides with their rich structures and properties are highly desirable for revealing the torturous transition mechanism of Fe chalcogenides and exploring their potential applications in spintronics and nanoelectronics. Hydrostatic pressure can effectively stimulate phase transitions between various ordered states, allowing one to successfully plot a phase diagram for a given material. Herein, the structural evolution and transport characteristics of 2D FeTe were systematically investigated under extreme conditions by comparing two distinct symmetries, i.e., tetragonal (t) and hexagonal (h) FeTe. We found that t-FeTe presented a pressure-induced transition from an antiferromagnetic state to a ferromagnetic state at ∼3 GPa, corresponding to the tetragonal collapse of the layered structure. Contrarily, the ferromagnetic order of h-FeTe was retained up to 15 GPa, which was evidently confirmed by electrical transport and Raman measurements. Furthermore, T-P phase diagrams for t-FeTe and h-FeTe were mapped under delicate critical conditions. Our results can provide a unique platform to elaborate the extraordinary properties of Fe chalcogenides and further develop their applications.
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Affiliation(s)
- Wuxiao Han
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jiajia Feng
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Hongliang Dong
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Mo Cheng
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Liu Yang
- School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Yunfei Yu
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Guoshuai Du
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jiayin Li
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Yubing Du
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Tiansong Zhang
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhiwei Wang
- School of Physics, Beijing Institute of Technology, Beijing 100081, China
| | - Bin Chen
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Jianping Shi
- The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
| | - Yabin Chen
- Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology (ARIMS), Beijing 100081, China
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
- BIT Chongqing Institute of Microelectronics and Microsystems, Chongqing 400030, China
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Yuan P, Han J, Cheng P, Ma R, Xiao Q, Ge JY, Feng Z, Cao S, Zhang J, Lu W, Chen F. Emergence of exchange bias field in FeS superconductor with cobalt-doping. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:335601. [PMID: 34049303 DOI: 10.1088/1361-648x/ac066c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
Among all the iron-based superconductors, the 11 series has the simplest layered structure but exhibits rich physical phenomenon. In this work, we have synthesized Fe1-xCoxS single crystals with tetragonal structure and studied their structure and magnetic properties. Magnetic susceptibility measurements indicate that the cobalt doping would suppress superconductivity and even introduce weak ferromagnetism besides antiferromagnetism. Scanning electron microscopy study reveals that the Co-doped samples exhibit intrinsic phase separation. Moreover, magnetic force microscopy measurement shows no magnetic domain in Fe1-xCoxS, indicating that neither phase is pure ferromagnetic. The coexistence of ferromagnetism and antiferromagnetism leads to the relatively large exchange bias field. Since the exchange bias effect has been widely used in the field of information storage, spin-valves, and magnetic tunnel junctions, our study provides another option for further application.
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Affiliation(s)
- Peng Yuan
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Jia Han
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Pengyu Cheng
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Renhai Ma
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Qiling Xiao
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Jun-Yi Ge
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Zhenjie Feng
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Shixun Cao
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Jincang Zhang
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Wenlai Lu
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Fei Chen
- Materials Genome Institute, Shanghai University, Shanghai, 200444, People's Republic of China
- Shanghai Key Laboratory of High Temperature Superconductors, Shanghai, 200444, People's Republic of China
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3
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Guo Z, Sun F, Chen Y, Mao Y, Wan L, Yan X, Yang Y, Yuan W. Synthesis, structure and superconductivity of FeS1−xSex (0 ≤ x ≤ 1) solid solution crystals. CrystEngComm 2019. [DOI: 10.1039/c9ce00038k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
FeS1−xSex solid solution crystals with the whole range (0 ≤ x ≤ 1) were synthesized, and the superconductivity and magnetism of these crystals were investigated.
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Affiliation(s)
- Zhongnan Guo
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Fan Sun
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yuyuan Chen
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yingluo Mao
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Lin Wan
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Xiaoxiao Yan
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yang Yang
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Wenxia Yuan
- Department of Chemistry
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
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Shimizu M, Takemori N, Guterding D, Jeschke HO. Two-Dome Superconductivity in FeS Induced by a Lifshitz Transition. PHYSICAL REVIEW LETTERS 2018; 121:137001. [PMID: 30312064 DOI: 10.1103/physrevlett.121.137001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Among iron chalcogenide superconductors, FeS can be viewed as a simple, highly compressed relative of FeSe without a nematic phase and with weaker electronic correlations. Under pressure, however, the superconductivity of stoichiometric FeS disappears and reappears, forming two domes. We perform electronic structure and spin fluctuation theory calculations for tetragonal FeS in order to analyze the nature of the superconducting order parameter. In the random phase approximation, we find a gap function with d-wave symmetry at ambient pressure, in agreement with several reports of a nodal superconducting order parameter in FeS. Our calculations show that, as a function of pressure, the superconducting pairing strength decreases until a Lifshitz transition takes place at 4.6 GPa. As a hole pocket with a large density of states appears at the Lifshitz transition, the gap symmetry is altered to sign-changing s wave. At the same time, the pairing strength is severely enhanced and increases up to a new maximum at 5.5 GPa. Therefore, our calculations naturally explain the occurrence of two superconducting domes in FeS.
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Affiliation(s)
- Makoto Shimizu
- Department of Physics, Okayama University, Okayama 700-8530, Japan
| | - Nayuta Takemori
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Daniel Guterding
- Fachbereich Mathematik, Naturwissenschaften und Datenverarbeitung, Technische Hochschule Mittelhessen, Wilhelm-Leuschner-Straße 13, 61169 Friedberg, Germany
| | - Harald O Jeschke
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
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Wu D, Guo Z, Liu N, Zhou L, Mao Y, Wan L, Sun F, Yuan W. A new intercalated iron sulfide (C2H8N2)0.4Fe2S2 from solvothermal route: Synthesis, structure and tunable magnetism. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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