Synthesis and resistivity of topological metal MoP nanostructures
Due to the increased surface to volume ratios, topological nanomaterials can enhance contributions from the topological surface states in transport measurements, which is critical for device applications that exploit the topological properties. It is particularly important for topological semimetals...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2020-01-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/1.5130159 |
| _version_ | 1818018384659349504 |
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| author | Hyeuk Jin Han David Hynek Zishan Wu Lei Wang Pengzi Liu Joshua V. Pondick Sajad Yazdani John M. Woods Milad Yarali Yujun Xie Hailiang Wang Judy J. Cha |
| author_facet | Hyeuk Jin Han David Hynek Zishan Wu Lei Wang Pengzi Liu Joshua V. Pondick Sajad Yazdani John M. Woods Milad Yarali Yujun Xie Hailiang Wang Judy J. Cha |
| author_sort | Hyeuk Jin Han |
| collection | DOAJ |
| description | Due to the increased surface to volume ratios, topological nanomaterials can enhance contributions from the topological surface states in transport measurements, which is critical for device applications that exploit the topological properties. It is particularly important for topological semimetals in which bulk carriers are unavoidable to make them into nanostructures to reveal the nature of the topological surface states, such as the Fermi arcs or nodal lines. Here, we report the nanostructure synthesis of the recently discovered triple-point topological metal MoP by direct conversion of MoO3 nanostructures and study their transport properties. We observe that the initial size of the MoO3 templates critically determines the crystalline quality of the resulting MoP nanostructures: large MoO3 flakes lead to porous MoP flakes, while narrow MoO3 nanowires lead to MoP nanowires without pores. The size-dependent porosity observed in MoP nanostructures is attributed to the volume change during the conversion reaction and nanoscale confinement effects. For MoO3 nanowires with diameters less than 10 nm, the resulting MoP nanowires are single crystalline. The resistivity values of MoP nanostructures are higher than the reported values of MoP bulk crystals owing to the porous nature. However, despite the high porosity present in MoP flakes, the residual resistance ratio is ∼2 and the temperature-dependent resistivity curves do not show any strong surface or grain-boundary scattering. Demonstration of the facile synthesis of MoP nanostructures provides opportunities for careful investigations of the surface states in transport measurements and exploration of future electronic devices, including nanoscale interconnects. |
| first_indexed | 2024-04-14T07:39:33Z |
| format | Article |
| id | doaj.art-77e1d15653384014b71fb57ddc45bc2b |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-04-14T07:39:33Z |
| publishDate | 2020-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-77e1d15653384014b71fb57ddc45bc2b2022-12-22T02:05:33ZengAIP Publishing LLCAPL Materials2166-532X2020-01-0181011103011103-710.1063/1.5130159Synthesis and resistivity of topological metal MoP nanostructuresHyeuk Jin Han0David Hynek1Zishan Wu2Lei Wang3Pengzi Liu4Joshua V. Pondick5Sajad Yazdani6John M. Woods7Milad Yarali8Yujun Xie9Hailiang Wang10Judy J. Cha11Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USAEnergy Sciences Institute, Yale West Campus, West Haven, Connecticut 06516, USAMaterials Characterization Core, Yale West Campus, West Haven, Connecticut 06516, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USAEnergy Sciences Institute, Yale West Campus, West Haven, Connecticut 06516, USADepartment of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USADue to the increased surface to volume ratios, topological nanomaterials can enhance contributions from the topological surface states in transport measurements, which is critical for device applications that exploit the topological properties. It is particularly important for topological semimetals in which bulk carriers are unavoidable to make them into nanostructures to reveal the nature of the topological surface states, such as the Fermi arcs or nodal lines. Here, we report the nanostructure synthesis of the recently discovered triple-point topological metal MoP by direct conversion of MoO3 nanostructures and study their transport properties. We observe that the initial size of the MoO3 templates critically determines the crystalline quality of the resulting MoP nanostructures: large MoO3 flakes lead to porous MoP flakes, while narrow MoO3 nanowires lead to MoP nanowires without pores. The size-dependent porosity observed in MoP nanostructures is attributed to the volume change during the conversion reaction and nanoscale confinement effects. For MoO3 nanowires with diameters less than 10 nm, the resulting MoP nanowires are single crystalline. The resistivity values of MoP nanostructures are higher than the reported values of MoP bulk crystals owing to the porous nature. However, despite the high porosity present in MoP flakes, the residual resistance ratio is ∼2 and the temperature-dependent resistivity curves do not show any strong surface or grain-boundary scattering. Demonstration of the facile synthesis of MoP nanostructures provides opportunities for careful investigations of the surface states in transport measurements and exploration of future electronic devices, including nanoscale interconnects.http://dx.doi.org/10.1063/1.5130159 |
| spellingShingle | Hyeuk Jin Han David Hynek Zishan Wu Lei Wang Pengzi Liu Joshua V. Pondick Sajad Yazdani John M. Woods Milad Yarali Yujun Xie Hailiang Wang Judy J. Cha Synthesis and resistivity of topological metal MoP nanostructures APL Materials |
| title | Synthesis and resistivity of topological metal MoP nanostructures |
| title_full | Synthesis and resistivity of topological metal MoP nanostructures |
| title_fullStr | Synthesis and resistivity of topological metal MoP nanostructures |
| title_full_unstemmed | Synthesis and resistivity of topological metal MoP nanostructures |
| title_short | Synthesis and resistivity of topological metal MoP nanostructures |
| title_sort | synthesis and resistivity of topological metal mop nanostructures |
| url | http://dx.doi.org/10.1063/1.5130159 |
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