Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine
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arXiv
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| Format: | Preprint |
| Published: |
2021
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| _version_ | 1866929381271666688 |
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| author | Bhattacharya, Susmita |
| author_facet | Bhattacharya, Susmita |
| contents | This work, demonstrate enhanced valley contrasting spin-momentum locked chiral states at van der Waal interface of chiral L-cysteine and mono-atomically thin MoS2 placed at Si/SiO2 substrate at ambient condition. Helicity dependent photoluminescence and resonance Raman measurement highlights spin-locked transitions for chiral L-cysteine modified SL MoS2 at ambient condition. Selective adsorption of chiral L-cysteine dimer /cystine on monolayer MoS2, stabilizes the in-plane effective magnetic field due to Si/SiO2 substrate and blocks the intervalley spin relaxation. The observed polarisation efficiency will be useful for improving the functionality of valley-based light emitting diode (LEDs) and encoding information in logical devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2108_01106 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine Bhattacharya, Susmita Mesoscale and Nanoscale Physics This work, demonstrate enhanced valley contrasting spin-momentum locked chiral states at van der Waal interface of chiral L-cysteine and mono-atomically thin MoS2 placed at Si/SiO2 substrate at ambient condition. Helicity dependent photoluminescence and resonance Raman measurement highlights spin-locked transitions for chiral L-cysteine modified SL MoS2 at ambient condition. Selective adsorption of chiral L-cysteine dimer /cystine on monolayer MoS2, stabilizes the in-plane effective magnetic field due to Si/SiO2 substrate and blocks the intervalley spin relaxation. The observed polarisation efficiency will be useful for improving the functionality of valley-based light emitting diode (LEDs) and encoding information in logical devices. |
| title | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2108.01106 |