TY - JOUR
T1 - On the interfacial thermal conductance of a ferromagnetic metal junction
AU - Juarez-Acosta, Isaac
AU - Olivares-Robles, Miguel Angel
AU - Chanona-Perez, Jose Jorge
N1 - Publisher Copyright:
© 2018 IOP Publishing Ltd.
PY - 2018/6/27
Y1 - 2018/6/27
N2 - We follow the conventional two-channel resistor model to describe the spin transport through an F|N (ferromagnetic metal|normal metal) interface in the field of spin caloritronics and its relationship with the interfacial thermal conductance. We show that the interfacial thermal conductance not only depends on terms of Fourier conduction transport, but also on interfacial parameters, such as electrical resistance, the Seebeck coefficient and the temperature gradient. The new term, which includes these parameters, is called the spin thermoelectric term of the interfacial thermal conductance and shows that when the system is excited by small fluctuations of temperature at the interface, permanently-induced currents are produced, resulting in nonzero values, as a first insight into the total thermal conductance magnitude order. Moreover, the relationship between this spin thermoelectric term and the applied charge current can be linearly approximated in the range of zero to the applied compensation current Ip under the effect of Peltier cooling. In general, the thermal conductance capacity can be drastically improved at nanoscale.
AB - We follow the conventional two-channel resistor model to describe the spin transport through an F|N (ferromagnetic metal|normal metal) interface in the field of spin caloritronics and its relationship with the interfacial thermal conductance. We show that the interfacial thermal conductance not only depends on terms of Fourier conduction transport, but also on interfacial parameters, such as electrical resistance, the Seebeck coefficient and the temperature gradient. The new term, which includes these parameters, is called the spin thermoelectric term of the interfacial thermal conductance and shows that when the system is excited by small fluctuations of temperature at the interface, permanently-induced currents are produced, resulting in nonzero values, as a first insight into the total thermal conductance magnitude order. Moreover, the relationship between this spin thermoelectric term and the applied charge current can be linearly approximated in the range of zero to the applied compensation current Ip under the effect of Peltier cooling. In general, the thermal conductance capacity can be drastically improved at nanoscale.
KW - currents
KW - interface
KW - spin channels
KW - thermal conductance
UR - http://www.scopus.com/inward/record.url?scp=85049440584&partnerID=8YFLogxK
U2 - 10.1088/1361-6463/aaca20
DO - 10.1088/1361-6463/aaca20
M3 - Artículo
SN - 0022-3727
VL - 51
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 29
M1 - 294002
ER -