| dc.contributor |
Massachusetts Institute of Technology. Department of Physics |
|
| dc.contributor |
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) |
|
| dc.contributor |
Moodera, Jagadeesh |
|
| dc.contributor |
Chang, Cui-zu |
|
| dc.creator |
Mendes, J. B. S. |
|
| dc.creator |
Alves Santos, O. |
|
| dc.creator |
Holanda, J. |
|
| dc.creator |
Loreto, R. P. |
|
| dc.creator |
de Araujo, C. I. L. |
|
| dc.creator |
Azevedo, A. |
|
| dc.creator |
Rezende, S. M. |
|
| dc.creator |
Moodera, Jagadeesh |
|
| dc.creator |
Chang, Cui-zu |
|
| dc.date |
2017-12-21T19:38:19Z |
|
| dc.date |
2017-12-21T19:38:19Z |
|
| dc.date |
2017-11 |
|
| dc.date |
2017-08 |
|
| dc.date |
2017-11-28T18:00:10Z |
|
| dc.date.accessioned |
2023-03-01T18:11:16Z |
|
| dc.date.available |
2023-03-01T18:11:16Z |
|
| dc.identifier |
2469-9950 |
|
| dc.identifier |
2469-9969 |
|
| dc.identifier |
http://hdl.handle.net/1721.1/112924 |
|
| dc.identifier |
Mendes, J. B. S., et al. “Dirac-Surface-State-Dominated Spin to Charge Current Conversion in the Topological Insulator (Bi{subscript 0.22]Sb[subscript 0.78])[subscript 2]Te[subscript 3] Films at Room Temperature.” Physical Review B, vol. 96, no. 18, Nov. 2017. © 2017 American Physical Society |
|
| dc.identifier |
https://orcid.org/0000-0002-2480-1211 |
|
| dc.identifier |
https://orcid.org/0000-0001-7413-5715 |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/279080 |
|
| dc.description |
We report the spin-to-charge current conversion in an intrinsic topological insulator (TI) (Bi[subscript 0.22]Sb[subscript 0.78])[subscript 2]Te[subscript 3] film at room temperature. The spin currents are generated in a thin layer of permalloy (Py) by two different processes, the spin pumping effect (SPE) and the spin Seebeck effect (SSE). In the first, we use microwave-driven ferromagnetic resonance of the Py film to generate a SPE spin current that is injected into the TI (Bi[subscript 0.22]Sb[subscript 0.78])[subscript 2]Te[subscript 3] layer in direct contact with Py. In the second, we use the SSE in the longitudinal configuration in Py without contamination by the anomalous Nernst effect, which was made possible with a thin NiO layer between the Py and (Bi[subscript 0.22]Sb[subscript 0.78])[subscript 2]Te[subscript 3] layers. The spin-to-charge current conversion is dominated by the TI surface states and is attributed to the inverse Edelstein effect (IEE), which is made possible by the spin-momentum locking in the electron Fermi contours due to the Rashba field. The measurements by the two techniques yield very similar values for the IEE parameter, which are larger than the reported values in the previous studies on topological insulators. |
|
| dc.description |
National Science Foundation (U.S.) (Grant DMR12074609) |
|
| dc.description |
National Science Foundation (U.S.) (Grants DMR-1700137) |
|
| dc.description |
National Science Foundation (U.S.) (Grant DMR-0819762) |
|
| dc.description |
United States. Office of Naval Research (Grant N00014-16-1-2657) |
|
| dc.description |
National Science Foundation (U.S.) (STC Center for Integrated Quantum Materials. Grant DMR-1231319) |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
American Physical Society |
|
| dc.relation |
http://dx.doi.org/10.1103/PhysRevB.96.180415 |
|
| dc.relation |
Physical Review B |
|
| dc.rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. |
|
| dc.rights |
American Physical Society |
|
| dc.source |
American Physical Society |
|
| dc.title |
Dirac-surface-state-dominated spin to charge current conversion in the topological insulator (Bi[subscript 0.22]Sb[subscript 0.78])[subscript 2]Te[subscript 3] films at room temperature |
|
| dc.type |
Article |
|
| dc.type |
http://purl.org/eprint/type/JournalArticle |
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