Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars

Liebing N, Serrano-Guisan S, Rott K, Reiss G, Langer J, Ocker B, Schumacher HW (2011)
PHYSICAL REVIEW LETTERS 107(17).

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Abstract
We study tunneling magnetothermopower (TMTP) in CoFeB/MgO/CoFeB magnetic tunnel junction nanopillars. Thermal gradients across the junctions are generated by an electric heater line. Thermopower voltages up to a few tens of mu V between the top and bottom contact of the nanopillars are measured which scale linearly with the applied heating power and hence the thermal gradient. The thermopower signal varies by up to 10 mu V upon reversal of the relative magnetic configuration of the two CoFeB layers from parallel to antiparallel. This signal change corresponds to a large spin-dependent Seebeck coefficient of the order of 100 mu V/K and a large TMTP change of the tunnel junction of up to 90%.
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Liebing N, Serrano-Guisan S, Rott K, et al. Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars. PHYSICAL REVIEW LETTERS. 2011;107(17).
Liebing, N., Serrano-Guisan, S., Rott, K., Reiss, G., Langer, J., Ocker, B., & Schumacher, H. W. (2011). Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars. PHYSICAL REVIEW LETTERS, 107(17).
Liebing, N., Serrano-Guisan, S., Rott, K., Reiss, G., Langer, J., Ocker, B., and Schumacher, H. W. (2011). Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars. PHYSICAL REVIEW LETTERS 107.
Liebing, N., et al., 2011. Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars. PHYSICAL REVIEW LETTERS, 107(17).
N. Liebing, et al., “Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars”, PHYSICAL REVIEW LETTERS, vol. 107, 2011.
Liebing, N., Serrano-Guisan, S., Rott, K., Reiss, G., Langer, J., Ocker, B., Schumacher, H.W.: Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars. PHYSICAL REVIEW LETTERS. 107, (2011).
Liebing, N., Serrano-Guisan, S., Rott, Karsten, Reiss, Günter, Langer, J., Ocker, B., and Schumacher, H. W. “Tunneling Magnetothermopower in Magnetic Tunnel Junction Nanopillars”. PHYSICAL REVIEW LETTERS 107.17 (2011).
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