التفاصيل البيبلوغرافية
| العنوان: |
Origin of the spin Seebeck effect in compensated ferrimagnets |
| المؤلفون: |
Geprägs, S. (author), Kehlberger, A. (author), Coletta, F.D. (author), Qiu, Z. (author), Guo, E.J. (author), Schulz, T. (author), Mix, C. (author), Meyer, S. (author), Kamra, A. (author), Althammer, M. (author), Huebl, H. (author), Jakob, G. (author), Ohnuma, Y. (author), Adachi, H. (author), Barker, J. (author), Maekawa, S. (author), Bauer, G.E.W. (author), Saitoh, E. (author), Gross, R. (author), Goennenwein, S.T.B. (author), Kläui, M. (author) |
| سنة النشر: |
2016 |
| المجموعة: |
Delft University of Technology: Institutional Repository |
| مصطلحات موضوعية: |
physical sciences, condensed matter |
| الوصف: |
Magnons are the elementary excitations of a magnetically ordered system. In ferromagnets, only a single band of low-energy magnons needs to be considered, but in ferrimagnets the situation is more complex owing to different magnetic sublattices involved. In this case, low lying optical modes exist that can affect the dynamical response. Here we show that the spin Seebeck effect (SSE) is sensitive to the complexities of the magnon spectrum. The SSE is caused by thermally excited spin dynamics that are converted to a voltage by the inverse spin Hall effect at the interface to a heavy metal contact. By investigating the temperature dependence of the SSE in the ferrimagnet gadolinium iron garnet, with a magnetic compensation point near room temperature, we demonstrate that higher-energy exchange magnons play a key role in the SSE. ; QN/Quantum Nanoscience ; Applied Sciences |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| Relation: |
Nature Communications, 7, 2016--2041-1723; http://resolver.tudelft.nl/uuid:140b6573-b4bd-466b-8f00-01f17972e60f |
| الاتاحة: |
http://resolver.tudelft.nl/uuid:140b6573-b4bd-466b-8f00-01f17972e60f |
| Rights: |
(c) CC BY - This work is licensed under a Creative Commons Attribution 4.0 International License |
| رقم الانضمام: |
edsbas.9503E10 |
| قاعدة البيانات: |
BASE |