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Title: Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements

Abstract

In the framework of the longitudinal spin Seebeck effect (LSSE), we developed an experimental setup for the characterization of LSSE devices. This class of device consists in a layered structure formed by a substrate, a ferrimagnetic insulator (YIG) where the spin current is thermally generated, and a paramagnetic metal (Pt) for the detection of the spin current via the inverse spin-Hall effect. In this kind of experiments, the evaluation of a thermal gradient through the thin YIG layer is a crucial point. In this work, we perform an indirect determination of the thermal gradient through the measurement of the heat flux. We developed an experimental setup using Peltier cells that allow us to measure the heat flux through a given sample. In order to test the technique, a standard LSSE device produced at Tohoku University was measured. We find a spin Seebeck S{sub SSE} coefficient of 2.8×10{sup −7} V K{sup −1}.

Authors:
; ; ;  [1];  [2];  [2];  [3];  [2];  [3];  [3];  [3]
  1. Istituto Nazionale di Ricerca Metrologica, Strada delle Cacce 91, 10135 Turin (Italy)
  2. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  3. (Japan)
Publication Date:
OSTI Identifier:
22410015
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DETECTION; FERRIMAGNETIC MATERIALS; FERRIMAGNETISM; FERRITE GARNETS; HALL EFFECT; HEAT FLUX; IRON OXIDES; LAYERS; PARAMAGNETISM; PLATINUM; SEEBECK EFFECT; SPIN; SUBSTRATES; TEMPERATURE GRADIENTS; YTTRIUM COMPOUNDS

Citation Formats

Sola, A., E-mail: a.sola@inrim.it, Kuepferling, M., Basso, V., Pasquale, M., Kikkawa, T., Uchida, K., PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Saitoh, E., WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, CREST, Japan Science and Technology Agency, Tokyo 102-0076, and Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195. Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements. United States: N. p., 2015. Web. doi:10.1063/1.4916762.
Sola, A., E-mail: a.sola@inrim.it, Kuepferling, M., Basso, V., Pasquale, M., Kikkawa, T., Uchida, K., PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Saitoh, E., WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, CREST, Japan Science and Technology Agency, Tokyo 102-0076, & Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195. Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements. United States. doi:10.1063/1.4916762.
Sola, A., E-mail: a.sola@inrim.it, Kuepferling, M., Basso, V., Pasquale, M., Kikkawa, T., Uchida, K., PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Saitoh, E., WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, CREST, Japan Science and Technology Agency, Tokyo 102-0076, and Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195. Thu . "Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements". United States. doi:10.1063/1.4916762.
@article{osti_22410015,
title = {Evaluation of thermal gradients in longitudinal spin Seebeck effect measurements},
author = {Sola, A., E-mail: a.sola@inrim.it and Kuepferling, M. and Basso, V. and Pasquale, M. and Kikkawa, T. and Uchida, K. and PRESTO, Japan Science and Technology Agency, Saitama 332-0012 and Saitoh, E. and WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 and CREST, Japan Science and Technology Agency, Tokyo 102-0076 and Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195},
abstractNote = {In the framework of the longitudinal spin Seebeck effect (LSSE), we developed an experimental setup for the characterization of LSSE devices. This class of device consists in a layered structure formed by a substrate, a ferrimagnetic insulator (YIG) where the spin current is thermally generated, and a paramagnetic metal (Pt) for the detection of the spin current via the inverse spin-Hall effect. In this kind of experiments, the evaluation of a thermal gradient through the thin YIG layer is a crucial point. In this work, we perform an indirect determination of the thermal gradient through the measurement of the heat flux. We developed an experimental setup using Peltier cells that allow us to measure the heat flux through a given sample. In order to test the technique, a standard LSSE device produced at Tohoku University was measured. We find a spin Seebeck S{sub SSE} coefficient of 2.8×10{sup −7} V K{sup −1}.},
doi = {10.1063/1.4916762},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}