Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications
Topological states in two-dimensional materials have garnered significant research attention in recent years, particularly those with intrinsic magnetic orderings, which hold great potential for spintronic applications. Through theoretical calculations, we unveil the superior band topology of monola...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2024-01-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0180800 |
| _version_ | 1797331925880274944 |
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| author | Haopeng Zhang Peng Wang Liyu Hao Zhimin Wu Weikang Wu Zhenxiang Cheng Tie Yang |
| author_facet | Haopeng Zhang Peng Wang Liyu Hao Zhimin Wu Weikang Wu Zhenxiang Cheng Tie Yang |
| author_sort | Haopeng Zhang |
| collection | DOAJ |
| description | Topological states in two-dimensional materials have garnered significant research attention in recent years, particularly those with intrinsic magnetic orderings, which hold great potential for spintronic applications. Through theoretical calculations, we unveil the superior band topology of monolayer vanadium trihalides, with a specific focus on V2Cl6. These two-dimensional compounds exhibit a half-metallic ferromagnetic ground state, showcasing excellent thermodynamic and mechanical stabilities. Remarkably, clean band crossings with complete spin polarization manifest as phase transitions between Weyl semimetal states and quantum anomalous Hall states under different magnetization directions, and both topological phases yield prominent edge states. Furthermore, Monte Carlo simulations estimate a high Curie temperature of up to 381.3 K, suggesting the potential for spintronic development above room temperature. Taking a step forward, we construct two heterojunctions utilizing selected substrates, MoS2 and h-BN. These substrates not only facilitate a suitable lattice integration but also have a negligible impact on the half-metallicity and band topology. These findings lay the groundwork for exploring practical applications of two-dimensional ferromagnetic topological states. Importantly, the presented material candidates have the potential to accelerate the development of room temperature applications and integrate spintronic devices. |
| first_indexed | 2024-03-08T07:42:21Z |
| format | Article |
| id | doaj.art-ceb5dfd80ad54f25b0e8d5c317657e82 |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-03-08T07:42:21Z |
| publishDate | 2024-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-ceb5dfd80ad54f25b0e8d5c317657e822024-02-02T16:57:37ZengAIP Publishing LLCAPL Materials2166-532X2024-01-01121011119011119-1110.1063/5.0180800Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applicationsHaopeng Zhang0Peng Wang1Liyu Hao2Zhimin Wu3Weikang Wu4Zhenxiang Cheng5Tie Yang6School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaCollege of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Shandong University, Jinan 250061, ChinaInstitute for Superconducting and Electronic Materials, University of Wollongong, Wollongong 2500, AustraliaSchool of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaTopological states in two-dimensional materials have garnered significant research attention in recent years, particularly those with intrinsic magnetic orderings, which hold great potential for spintronic applications. Through theoretical calculations, we unveil the superior band topology of monolayer vanadium trihalides, with a specific focus on V2Cl6. These two-dimensional compounds exhibit a half-metallic ferromagnetic ground state, showcasing excellent thermodynamic and mechanical stabilities. Remarkably, clean band crossings with complete spin polarization manifest as phase transitions between Weyl semimetal states and quantum anomalous Hall states under different magnetization directions, and both topological phases yield prominent edge states. Furthermore, Monte Carlo simulations estimate a high Curie temperature of up to 381.3 K, suggesting the potential for spintronic development above room temperature. Taking a step forward, we construct two heterojunctions utilizing selected substrates, MoS2 and h-BN. These substrates not only facilitate a suitable lattice integration but also have a negligible impact on the half-metallicity and band topology. These findings lay the groundwork for exploring practical applications of two-dimensional ferromagnetic topological states. Importantly, the presented material candidates have the potential to accelerate the development of room temperature applications and integrate spintronic devices.http://dx.doi.org/10.1063/5.0180800 |
| spellingShingle | Haopeng Zhang Peng Wang Liyu Hao Zhimin Wu Weikang Wu Zhenxiang Cheng Tie Yang Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications APL Materials |
| title | Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications |
| title_full | Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications |
| title_fullStr | Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications |
| title_full_unstemmed | Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications |
| title_short | Ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications |
| title_sort | ferromagnetic topological states in monolayer vanadium halides toward heterostructure applications |
| url | http://dx.doi.org/10.1063/5.0180800 |
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