Large Damping-Like Spin–Orbit Torque in a 2D Conductive 1T-TaS2 Monolayer

Kumar, Prabhat (author): Czech Acad Sci, Dept Thin Films & Nanostruct, Inst Phys, Prague, Czech Republic

Edvinsson, Tomas, Professor, 1970- (author): Uppsala universitet,Fasta tillståndets fysik

F. García-Sánchez, F. (author): Univ Salamanca, Dept Fis Aplicada, Salamanca, Spain

Chaudhary, Sujeet (author): Indian Inst Technol Delhi, Dept Phys, Thin Film Lab, New Delhi, India

Svedlindh, Peter (contributor): Uppsala universitet,Fasta tillståndets fysik

(creator_code:org_t)

2020-08-05
2020
English.
In: Nano letters (Print). - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 20:9, s. 6372-6380

Related links:: https://doi.org/10.1...; show more...; https://uu.diva-port... (primary) (Raw object); https://pubs.acs.org...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

A damping-like spin-orbit torque (SOT) is a prerequisite for ultralow-power spin logic devices. Here, we report on the damping-like SOT in just one monolayer of the conducting transition-metal dichalcogenide (TMD) TaS2 interfaced with a NiFe (Py) ferromagnetic layer. The charge-spin conversion efficiency is found to be 0.25 +/- 0.03 in TaS2(0.88)/Py(7), and the spin Hall conductivity (14.9 x 10(s) h/2e Omega(-1) m(-1) is found to be superior to values reported for other TMDs. We also observed sizable field-like torque in this heterostructure. The origin of this large damping-like SOT can be found in the interfacial properties of the TaS2/Py heterostructure, and the experimental findings are complemented by the results from density functional theory calculations. It is envisioned that the interplay between interfacial spinorbit coupling and crystal symmetry yielding large damping-like SOT. The dominance of damping-like torque demonstrated in our study provides a promising path for designing the next-generation conducting TMD-based low-powered quantum memory devices.

By the author/editor: Husain, Sajid; Chen, Xin, 1992-; Gupta, Rahul; Behera, Nilamani; Kumar, Prabhat; Edvinsson, Tomas ...; show more...; F. García-Sánche ...; Brucas, Rimantas; Chaudhary, Sujee ...; Sanyal, Biplab; Svedlindh, Peter; Kumar, Ankit; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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