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Title: Enhanced room-temperature spin Seebeck effect in a YIG/C 60 /Pt layered heterostructure

Authors:
 [1];  [1];  [2];  [2];  [2];  [2];  [3];  [3];  [1];  [1]
  1. Department of Physics, University of South Florida, Tampa, Florida 33620, USA
  2. Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA
  3. Department of Physics, Colorado State University, Fort Collins, CO 80523, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1413028
Grant/Contract Number:
SC0012670
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 5; Related Information: CHORUS Timestamp: 2017-12-12 14:25:19; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Das, R., Kalappattil, V., Geng, R., Luong, H., Pham, M., Nguyen, T., Liu, Tao, Wu, Mingzhong, Phan, M. H., and Srikanth, H. Enhanced room-temperature spin Seebeck effect in a YIG/C 60 /Pt layered heterostructure. United States: N. p., 2018. Web. doi:10.1063/1.5007233.
Das, R., Kalappattil, V., Geng, R., Luong, H., Pham, M., Nguyen, T., Liu, Tao, Wu, Mingzhong, Phan, M. H., & Srikanth, H. Enhanced room-temperature spin Seebeck effect in a YIG/C 60 /Pt layered heterostructure. United States. doi:10.1063/1.5007233.
Das, R., Kalappattil, V., Geng, R., Luong, H., Pham, M., Nguyen, T., Liu, Tao, Wu, Mingzhong, Phan, M. H., and Srikanth, H. Tue . "Enhanced room-temperature spin Seebeck effect in a YIG/C 60 /Pt layered heterostructure". United States. doi:10.1063/1.5007233.
@article{osti_1413028,
title = {Enhanced room-temperature spin Seebeck effect in a YIG/C 60 /Pt layered heterostructure},
author = {Das, R. and Kalappattil, V. and Geng, R. and Luong, H. and Pham, M. and Nguyen, T. and Liu, Tao and Wu, Mingzhong and Phan, M. H. and Srikanth, H.},
abstractNote = {},
doi = {10.1063/1.5007233},
journal = {AIP Advances},
number = 5,
volume = 8,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2018},
month = {Tue May 01 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.5007233

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  • The Pt/YIG structure has been widely used to study spin Seebeck effect (SSE), inverse spin Hall effect, and other pure spin current phenomena. However, the magnetic proximity effect in Pt when in contact with YIG, and the potential anomalous Nernst effect (ANE) may compromise the spin current phenomena in Pt/YIG. By inserting a Cu layer of various thicknesses between Pt and YIG, we have separated the signals from the SSE and that of the ANE. It is demonstrated that the thermal voltage in Pt/YIG mainly comes from spin current due to the longitudinal SSE with negligible contribution from the ANE.
  • The Pt/YIG structure has been widely used to study spin Seebeck effect (SSE), inverse spin Hall effect, and other pure spin current phenomena. However, the magnetic proximity effect in Pt when in contact with YIG, and the potential anomalous Nernst effect (ANE) may compromise the spin current phenomena in Pt/YIG. By inserting a Cu layer of various thicknesses between Pt and YIG, we have separated the signals from the SSE and that of the ANE. Here, it is demonstrated that the thermal voltage in Pt/YIG mainly comes from spin current due to the longitudinal SSE with negligible contribution from themore » ANE.« less
    Cited by 13
  • The Pt/YIG structure has been widely used to study spin Seebeck effect (SSE), inverse spin Hall effect, and other pure spin current phenomena. However, the magnetic proximity effect in Pt when in contact with YIG, and the potential anomalous Nernst effect (ANE) may compromise the spin current phenomena in Pt/YIG. By inserting a Cu layer of various thicknesses between Pt and YIG, we have separated the signals from the SSE and that of the ANE. Here, it is demonstrated that the thermal voltage in Pt/YIG mainly comes from spin current due to the longitudinal SSE with negligible contribution from themore » ANE.« less
  • Cited by 13
  • The temperature-dependent longitudinal spin Seebeck effect (LSSE) in heavy metal (HM)/Y 3Fe 5O 12 (YIG) hybrid structures is investigated as a function of YIG film thickness, magnetic field strength, and different HM detection materials. The LSSE signal shows a large enhancement with reductions in temperature, leading to a pronounced peak at low temperatures. Here we find that the LSSE peak temperature strongly depends on the film thickness as well as on the magnetic field. Our result can be well explained in the framework of magnon-driven LSSE by taking into account the temperature-dependent effective propagation length of thermally excited magnons inmore » the bulk of the material. We further demonstrate that the LSSE peak is significantly shifted by changing the interface coupling to an adjacent detection layer, revealing a more complex behavior beyond the currently discussed bulk effect. By direct microscopic imaging of the interface, we correlate the observed temperature dependence with the interface structure between the YIG and the adjacent metal layer. Finally, our results highlight the role of interface effects on the temperature-dependent LSSE in HM/YIG system, suggesting that the temperature-dependent spin current transparency strikingly relies on the interface conditions.« less
    Cited by 30