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Thermoelectric Signal Enhancement by Reconciling the Spin Seebeck and Anomalous Nernst Effects in Ferromagnet/Non-magnet Multilayers.
Lee, Kyeong-Dong; Kim, Dong-Jun; Yeon Lee, Hae; Kim, Seung-Hyun; Lee, Jong-Hyun; Lee, Kyung-Min; Jeong, Jong-Ryul; Lee, Ki-Suk; Song, Hyon-Seok; Sohn, Jeong-Woo; Shin, Sung-Chul; Park, Byong-Guk.
Afiliación
  • Lee KD; Department of Materials Science and Engineering, KI for the Nanocentury, KAIST, Daejeon, 305-701, Korea.
  • Kim DJ; Department of Materials Science and Engineering, KI for the Nanocentury, KAIST, Daejeon, 305-701, Korea.
  • Yeon Lee H; Department of Materials Science and Engineering, KI for the Nanocentury, KAIST, Daejeon, 305-701, Korea.
  • Kim SH; Department of Materials Science and Engineering, Graduate School of Green Energy Technology, Chungnam National University, Daejeon, 305-764, Korea.
  • Lee JH; Department of Materials Science and Engineering, Graduate School of Green Energy Technology, Chungnam National University, Daejeon, 305-764, Korea.
  • Lee KM; Department of Materials Science and Engineering, Graduate School of Green Energy Technology, Chungnam National University, Daejeon, 305-764, Korea.
  • Jeong JR; Department of Materials Science and Engineering, Graduate School of Green Energy Technology, Chungnam National University, Daejeon, 305-764, Korea.
  • Lee KS; School of Mechanical and Advanced Materials Engineering, UNIST, Ulsan, 689-798, Korea.
  • Song HS; 1] Department of Physics and CNSM, KAIST, Daejeon, 305-701, Korea [2] Department of Emerging Materials Science, DGIST, Daegu, 711-873, Korea.
  • Sohn JW; 1] Department of Physics and CNSM, KAIST, Daejeon, 305-701, Korea [2] Department of Emerging Materials Science, DGIST, Daegu, 711-873, Korea.
  • Shin SC; 1] Department of Physics and CNSM, KAIST, Daejeon, 305-701, Korea [2] Department of Emerging Materials Science, DGIST, Daegu, 711-873, Korea.
  • Park BG; Department of Materials Science and Engineering, KI for the Nanocentury, KAIST, Daejeon, 305-701, Korea.
Sci Rep ; 5: 10249, 2015 May 28.
Article en En | MEDLINE | ID: mdl-26020492
The utilization of ferromagnetic (FM) materials in thermoelectric devices allows one to have a simpler structure and/or independent control of electric and thermal conductivities, which may further remove obstacles for this technology to be realized. The thermoelectricity in FM/non-magnet (NM) heterostructures using an optical heating source is studied as a function of NM materials and a number of multilayers. It is observed that the overall thermoelectric signal in those structures which is contributed by spin Seebeck effect and anomalous Nernst effect (ANE) is enhanced by a proper selection of NM materials with a spin Hall angle that matches to the sign of the ANE. Moreover, by an increase of the number of multilayer, the thermoelectric voltage is enlarged further and the device resistance is reduced, simultaneously. The experimental observation of the improvement of thermoelectric properties may pave the way for the realization of magnetic-(or spin-) based thermoelectric devices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2015 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2015 Tipo del documento: Article Pais de publicación: Reino Unido