Spin Seebeck insulator
Source abstract
Abstract
Thermoelectric generation is an essential function in future energy-saving technologies. However, it has so far been an exclusive feature of electric conductors, a situation which limits its application; conduction electrons are often problematic in the thermal design of devices. Here we report electric voltage generation from heat flowing in an insulator. We reveal that, despite the absence of conduction electrons, the magnetic insulator LaY(2)Fe(5)O(12) can convert a heat flow into a spin voltage. Attached Pt films can then transform this spin voltage into an electric voltage as a result of the inverse spin Hall effect. The experimental results require us to introduce a thermally activated interface spin exchange between LaY(2)Fe(5)O(12) and Pt. Our findings extend the range of potential materials for thermoelectric applications and provide a crucial piece of information for understanding the physics of the spin Seebeck effect.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Quantum and electron transport phenomena · Magnetic properties of thin films · Physics of Superconductivity and Magnetism
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
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1. Ashcroft, N. W. & Mermin, N. D. Solid State Physics 253–258 (Saunders College, 1976).
2. DiSalvo, F. J. Thermoelectric cooling and power generation. Science 285, 703–706 (1999).10.1126/science.285.5428.703 ↗
3. Dyakonov, M. I. & Perel, V. I. Current-induced spin orientation of electrons in semiconductors. Phys. Lett. A 35, 459–460 (1971).10.1016/0375-9601(71)90196-4 ↗
4. Hirsch, J. E. Spin Hall effect. Phys. Rev. Lett. 83, 1834–1837 (1999).10.1103/PhysRevLett.83.1834 ↗
5. Murakami, S., Nagaosa, N. & Zhang, S-C. Dissipationless quantum spin current at room temperature. Science 301, 1348–1351 (2003).10.1126/science.1087128 ↗
6. Sinova, J. et al. Universal intrinsic spin Hall effect. Phys. Rev. Lett. 92, 126603 (2004).10.1103/PhysRevLett.92.126603 ↗
7. Kato, Y. K., Myers, R. C., Gossard, A. C. & Awschalom, D. D. Observation of the spin Hall effect in semiconductors. Science 306, 1910–1913 (2004).10.1126/science.1105514 ↗
8. Wunderlich, J., Kaestner, B., Sinova, J. & Jungwirth, T. Experimental observation of the spin-Hall effect in a two-dimensional spin–orbit coupled semiconductor system. Phys. Rev. Lett. 94, 047204 (2005).10.1103/PhysRevLett.94.047204 ↗
9. Saitoh, E., Ueda, M., Miyajima, H. & Tatara, G. Conversion of spin current into charge current at room temperature: Inverse spin-Hall effect. Appl. Phys. Lett. 88, 182509 (2006).10.1063/1.2199473 ↗
10. Valenzuela, S. O. & Tinkham, M. Direct electronic measurement of the spin Hall effect. Nature 442, 176–179 (2006).10.1038/nature04937 ↗
11. Kimura, T., Otani, Y., Sato, T., Takahashi, S. & Maekawa, S. Room-temperature reversible spin Hall effect. Phys. Rev. Lett. 98, 156601 (2007).10.1103/PhysRevLett.98.156601 ↗
12. Mosendz, O. et al. Quantifying spin Hall angles from spin pumping: Experiments and theory. Phys. Rev. Lett. 104, 046601 (2010).10.1103/PhysRevLett.104.046601 ↗
13. Uchida, K. et al. Observation of the spin Seebeck effect. Nature 455, 778–781 (2008).10.1038/nature07321 ↗
14. Wolf, S. A. et al. Spintronics: A spin-based electronics vision for the future. Science 294, 1488–1495 (2001).10.1126/science.1065389 ↗
15. Žutić, I., Fabian, J. & Das Sarma, S. Spintronics: Fundamentals and applications. Rev. Mod. Phys 76, 323–410 (2004).10.1103/RevModPhys.76.323 ↗
16. Maekawa, S. (ed.) Concept in Spin Electronics (Oxford Univ. Press, 2006).10.1093/acprof:oso/9780198568216.001.0001 ↗
17. Johnson, M. & Silsbee, R. H. Thermodynamic analysis of interfacial transport and of the thermomagnetoelectric system. Phys. Rev. B 35, 4959–4972 (1987).10.1103/PhysRevB.35.4959 ↗
18. Hatami, M., Bauer, G. E. W., Zhang, Q-F. & Kelly, P. J. Thermal spin-transfer torque in magnetoelectronic devices. Phys. Rev. Lett. 99, 066603 (2007).10.1103/PhysRevLett.99.066603 ↗
19. Bauer, G. E. W., MacDonald, A. H. & Maekawa, S. (eds) Spin Caloritronics, Special Issue of Solid State Communications (Elsevier, 2010).10.1016/j.ssc.2010.01.022 ↗
20. Slonczewski, J. C. Current-driven excitation of magnetic multilayers. J. Magn. Magn. Mater. 159, L1–L7 (1996).10.1016/0304-8853(96)00062-5 ↗
21. Kajiwara, Y. et al. Transmission of electrical signals by spin-wave interconversion in a magnetic insulator. Nature 464, 262–266 (2010).10.1038/nature08876 ↗
22. Callen, H. B. The application of Onsager’s reciprocal relations to thermoelectric, thermomagnetic, and galvanomagnetic effects. Phys. Rev. 73, 1349–1358 (1948).10.1103/PhysRev.73.1349 ↗
23. Hansen, P., Witter, K. & Tolksdorf, W. Magnetic and magneto-optic properties of lead- and bismuth-substituted yttrium iron garnet films. Phys. Rev. B 27, 6608–6625 (1983).10.1103/PhysRevB.27.6608 ↗
24. Tserkovnyak, Y., Brataas, A. & Bauer, G. E. W. Enhanced Gilbert damping in thin ferromagnetic films. Phys. Rev. Lett. 88, 117601 (2002).10.1103/PhysRevLett.88.117601 ↗
25. Foros, J., Brataas, A., Tserkovnyak, Y. & Bauer, G. E. W. Magnetization noise in magnetoelectronic nanostructures. Phys. Rev. Lett. 95, 016601 (2005).10.1103/PhysRevLett.95.016601 ↗
26. Xiao, J., Bauer, G. E. W., Maekawa, S. & Brataas, A. Charge pumping and the colored thermal voltage noise in spin valves. Phys. Rev. B 79, 174415 (2009).10.1103/PhysRevB.79.174415 ↗
27. Xiao, J., Bauer, G. E. W., Uchida, K., Saitoh, E. & Maekawa, S. Theory of magnon-driven spin Seebeck effect. Phys. Rev. B 81, 214418 (2010).10.1103/PhysRevB.81.214418 ↗
28. Demokritov, S. O., Hillebrands, B. & Slavin, A. N. Brillouin light scattering studies of confined spin waves: Linear and nonlinear confinement. Phys. Rep. 348, 441–489 (2001).10.1016/S0370-1573(00)00116-2 ↗
29. Sanders, D. J. & Walton, D. Effect of magnon–phonon thermal relaxation on heat transport by magnons. Phys. Rev. B 15, 1489–1494 (1977).10.1103/PhysRevB.15.1489 ↗
30. Schneider, T. et al. Realization of spin-wave logic gates. Appl. Phys. Lett. 92, 022505 (2008).10.1063/1.2834714 ↗