Rich magnetic phase transitions and completely dual-spin polarization of zigzag PC 3 nanoribbons under uniaxial strain

Among many modulation methods, strain engineering is often chosen for nanomaterials to produce tunable band gaps continuously. Inspired by the recently reported two-dimensional material PC , we explore the tuning of strain on the spin-dependent transport properties of PC nanoribbons using the first-...

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Veröffentlicht in:Physical chemistry chemical physics : PCCP 2023-01, Vol.25 (3), p.2342-2348
Hauptverfasser: Ni, Hui-Min, He, Jing-Jing, Guo, Fang-Wen, Dong, Jia-Bei, Lu, Tian-Yi, Cui, Wen-Dou, Yuan, Jia-Ren, Guo, Yan-Dong, Yan, Xiao-Hong
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Sprache:eng
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Zusammenfassung:Among many modulation methods, strain engineering is often chosen for nanomaterials to produce tunable band gaps continuously. Inspired by the recently reported two-dimensional material PC , we explore the tuning of strain on the spin-dependent transport properties of PC nanoribbons using the first-principle approach. Surprisingly, strain regulation achieves uninterrupted completely dual-spin polarization over a wide energy range near . Analysis reveals that the peculiar transmission spectra arise from the interesting evolution of the band structure, in which strain induces bands to shift and broaden/flatten. This results in triggering the transition of PC NRs from bandgap-tunable bipolar magnetic semiconductors to spin-gapless semiconductors to ferromagnetic metals or half-metal magnets. Their unique performance demonstrates great potential in spintronics, and our study is expected to provide ideas and theoretical support for the design and application of novel PC -based spintronic devices in the future.
ISSN:1463-9076
1463-9084
DOI:10.1039/d2cp05066h