Magnetic Proximity induced efficient charge-to-spin conversion in large area PtSe$_{2}$/Ni$_{80}$Fe$_{20}$ heterostructures
| Autor: | Mudgal, Richa, Jakhar, Alka, Gupta, Pankhuri, Yadav, Ram Singh, Biswal, B., Sahu, P., Bangar, Himanshu, Kumar, Akash, Chowdhury, Niru, Satpati, Biswarup, Nanda, B. R. K., Satpathy, S., Das, Samaresh, Muduli, P. K. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Nano Lett. 23, 11925 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/acs.nanolett.3c04060 |
| Popis: | As a topological Dirac semimetal with controllable spin-orbit coupling and conductivity, PtSe$_2$, a transition-metal dichalcogenide, is a promising material for several applications from optoelectric to sensors. However, its potential for spintronics applications is yet to be explored. In this work, we demonstrate that PtSe$_{2}$/Ni$_{80}$Fe$_{20}$ heterostructure can generate a large damping-like current-induced spin-orbit torques (SOT), despite the absence of spin-splitting in bulk PtSe$_{2}$. The efficiency of charge-to-spin conversion is found to be $(-0.1 \pm 0.02)$~nm$^{-1}$ in PtSe$_{2}$/Ni$_{80}$Fe$_{20}$, which is three times that of the control sample, Ni$_{80}$Fe$_{20}$/Pt. Our band structure calculations show that the SOT due to the PtSe$_2$ arises from an unexpectedly large spin splitting in the interfacial region of PtSe$_2$ introduced by the proximity magnetic field of the Ni$_{80}$Fe$_{20}$ layer. Our results open up the possibilities of using large-area PtSe$_{2}$ for energy-efficient nanoscale devices by utilizing the proximity-induced SOT. Comment: 18 pages, 4 figures |
| Databáze: | arXiv |
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