TY - JOUR
T1 - Thermal spin transfer in Fe-MgO-Fe tunnel junctions
AU - Jia, Xingtao
AU - Xia, Ke
AU - Bauer, Gerrit E.W.
PY - 2011/10/20
Y1 - 2011/10/20
N2 - We compute thermal spin transfer (TST) torques in Fe-MgO-Fe tunnel junctions using a first principles wave-function-matching method. At room temperature, the TST in a junction with 3 MgO monolayers amounts to 10 -7J/m2/K, which is estimated to cause magnetization reversal for temperature differences over the barrier of the order of 10 K. The large TST can be explained by multiple scattering between interface states through ultrathin barriers. The angular dependence of the TST can be very skewed, possibly leading to thermally induced high-frequency generation.
AB - We compute thermal spin transfer (TST) torques in Fe-MgO-Fe tunnel junctions using a first principles wave-function-matching method. At room temperature, the TST in a junction with 3 MgO monolayers amounts to 10 -7J/m2/K, which is estimated to cause magnetization reversal for temperature differences over the barrier of the order of 10 K. The large TST can be explained by multiple scattering between interface states through ultrathin barriers. The angular dependence of the TST can be very skewed, possibly leading to thermally induced high-frequency generation.
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U2 - 10.1103/PhysRevLett.107.176603
DO - 10.1103/PhysRevLett.107.176603
M3 - Article
AN - SCOPUS:80054851717
SN - 0031-9007
VL - 107
JO - Physical Review Letters
JF - Physical Review Letters
IS - 17
M1 - 176603
ER -