TY - JOUR
T1 - Size dependence of Peltier cooling in ferromagnet/Au nanopillars
AU - Bosu, Subrojati
AU - Sakuraba, Yuya
AU - Kubota, Takahide
AU - Juarez-Acosta, Isaac
AU - Sugiyama, Tomoko
AU - Saito, Kesami
AU - Olivares-Robles, Miguel A.
AU - Takahashi, Saburo
AU - Bauer, Gerrit E.W.
AU - Takanashi, Koki
N1 - Publisher Copyright:
© 2015 The Japan Society of Applied Physics.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - We study Peltier cooling in current-perpendicular-to-plane multilayer nanopillars with diameters D varying from 60 to 430 nm and made from Au and various ferromagnets (FMs): Heusler compounds Co2MnSi and Co2FeSi (CFS) and conventional FM metals Fe and Co. We report an enhanced effective Peltier coefficient ΠCPP in resistance-current curves at small D (<120 nm). The maximum ΠCPP value of about 165 mV, found for the CFS/Au interface with D ∼ 60 nm, is 24 times higher than the bulk Peltier coefficient Πbulk (∼7 mV) and corresponds to a high cooling power of 43.6 MW/cm2.
AB - We study Peltier cooling in current-perpendicular-to-plane multilayer nanopillars with diameters D varying from 60 to 430 nm and made from Au and various ferromagnets (FMs): Heusler compounds Co2MnSi and Co2FeSi (CFS) and conventional FM metals Fe and Co. We report an enhanced effective Peltier coefficient ΠCPP in resistance-current curves at small D (<120 nm). The maximum ΠCPP value of about 165 mV, found for the CFS/Au interface with D ∼ 60 nm, is 24 times higher than the bulk Peltier coefficient Πbulk (∼7 mV) and corresponds to a high cooling power of 43.6 MW/cm2.
UR - http://www.scopus.com/inward/record.url?scp=84938631528&partnerID=8YFLogxK
U2 - 10.7567/APEX.8.083002
DO - 10.7567/APEX.8.083002
M3 - Artículo
SN - 1882-0778
VL - 8
JO - Applied Physics Express
JF - Applied Physics Express
IS - 8
M1 - 083002
ER -