Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions

Liebing N, Serrano-Guisan S, Krzysteczko P, Rott K, Reiss G, Langer J, Ocker B, Schumacher HW (2013)
Applied Physics Letters 102(24).

Journal Article | Published | English

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Abstract
We study the tunneling magneto thermopower and tunneling magneto thermocurrent of CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJ). The devices show a clear change of the thermoelectric properties upon reversal of the magnetisation of the CoFeB layers from parallel to the antiparallel orientation. When switching from parallel to antiparallel the thermopower increases by up to 55% whereas the thermocurrent drops by 45%. These observations can be well explained by the Onsager relations taking into account the tunneling magneto resistance of the MTJ. These findings contrast previous studies on Al2O3 based MTJ systems, revealing tunneling magneto thermo power but no tunneling magneto thermocurrent. (C) 2013 AIP Publishing LLC.
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Liebing N, Serrano-Guisan S, Krzysteczko P, et al. Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions. Applied Physics Letters. 2013;102(24).
Liebing, N., Serrano-Guisan, S., Krzysteczko, P., Rott, K., Reiss, G., Langer, J., Ocker, B., et al. (2013). Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions. Applied Physics Letters, 102(24).
Liebing, N., Serrano-Guisan, S., Krzysteczko, P., Rott, K., Reiss, G., Langer, J., Ocker, B., and Schumacher, H. W. (2013). Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions. Applied Physics Letters 102.
Liebing, N., et al., 2013. Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions. Applied Physics Letters, 102(24).
N. Liebing, et al., “Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions”, Applied Physics Letters, vol. 102, 2013.
Liebing, N., Serrano-Guisan, S., Krzysteczko, P., Rott, K., Reiss, G., Langer, J., Ocker, B., Schumacher, H.W.: Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions. Applied Physics Letters. 102, (2013).
Liebing, N., Serrano-Guisan, S., Krzysteczko, P., Rott, Karsten, Reiss, Günter, Langer, J., Ocker, B., and Schumacher, H. W. “Tunneling magneto thermocurrent in CoFeB/MgO/CoFeB based magnetic tunnel junctions”. Applied Physics Letters 102.24 (2013).
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