Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine
This work demonstrates enhanced valley contrasting spin-momentum locked chiral states at the van der Waals interface of chiral L-cysteine and single layer (SL) MoS2 placed on a Si/SiO2 substrate at ambient conditions. Helicity dependent photoluminescence and resonance Raman measurements highlight sp...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-07-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0065333 |
| _version_ | 1811320364684279808 |
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| author | Susmita Bhattacharya Srishti Pal D. V. S. Muthu A. K. Sood |
| author_facet | Susmita Bhattacharya Srishti Pal D. V. S. Muthu A. K. Sood |
| author_sort | Susmita Bhattacharya |
| collection | DOAJ |
| description | This work demonstrates enhanced valley contrasting spin-momentum locked chiral states at the van der Waals interface of chiral L-cysteine and single layer (SL) MoS2 placed on a Si/SiO2 substrate at ambient conditions. Helicity dependent photoluminescence and resonance Raman measurements highlight spin-locked transitions for the chiral L-cysteine modified SL-MoS2 at ambient conditions. Selective adsorption of chiral L-cysteine dimer/cysteine stabilizes the in-plane effective magnetic field due to the Si/SiO2 substrate and blocks the intervalley spin relaxation. The observed polarization efficiency can be useful for improving the functionality of valley-based light emitting diodes and encoding information in logical devices. |
| first_indexed | 2024-04-13T12:58:28Z |
| format | Article |
| id | doaj.art-543925f61b2e4b5395d5fbc3b754e42e |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-13T12:58:28Z |
| publishDate | 2022-07-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-543925f61b2e4b5395d5fbc3b754e42e2022-12-22T02:45:59ZengAIP Publishing LLCAIP Advances2158-32262022-07-01127075308075308-910.1063/5.0065333Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteineSusmita Bhattacharya0Srishti Pal1D. V. S. Muthu2A. K. Sood3Department of Physics, Indian Institute of Science, Bangalore 560012, IndiaDepartment of Physics, Indian Institute of Science, Bangalore 560012, IndiaDepartment of Physics, Indian Institute of Science, Bangalore 560012, IndiaDepartment of Physics, Indian Institute of Science, Bangalore 560012, IndiaThis work demonstrates enhanced valley contrasting spin-momentum locked chiral states at the van der Waals interface of chiral L-cysteine and single layer (SL) MoS2 placed on a Si/SiO2 substrate at ambient conditions. Helicity dependent photoluminescence and resonance Raman measurements highlight spin-locked transitions for the chiral L-cysteine modified SL-MoS2 at ambient conditions. Selective adsorption of chiral L-cysteine dimer/cysteine stabilizes the in-plane effective magnetic field due to the Si/SiO2 substrate and blocks the intervalley spin relaxation. The observed polarization efficiency can be useful for improving the functionality of valley-based light emitting diodes and encoding information in logical devices.http://dx.doi.org/10.1063/5.0065333 |
| spellingShingle | Susmita Bhattacharya Srishti Pal D. V. S. Muthu A. K. Sood Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine AIP Advances |
| title | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine |
| title_full | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine |
| title_fullStr | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine |
| title_full_unstemmed | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine |
| title_short | Trapping the carrier in the spin-locked MoS2 atomic valley by absorption of chiral L-cysteine |
| title_sort | trapping the carrier in the spin locked mos2 atomic valley by absorption of chiral l cysteine |
| url | http://dx.doi.org/10.1063/5.0065333 |
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