TY  - JOUR
AU  - Sprungmann, D.
AU  - Westerholdt, K.
AU  - Zabel, H.
AU  - Weides, M.
AU  - Kohlstedt, H.
TI  - Evidence for triplet superconductivity in Josephson junctions with ferromagnetic Cu2MnAl-Heusler barriers
JO  - Physical review / B
VL  - 82
IS  - 6
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-10833
SP  - 060505
PY  - 2010
N1  - The authors thank the DFG for funding this work within the DFG under Project No. WE 4359/1-1 and within the SFB 491. Additionally we thank A. F. Volkov, M. Fistoul, and K. B. Efetov for valuable discussions.
AB  - We have studied Josephson junctions with barriers prepared from the Heusler compound Cu2MnAl. In the as-prepared state the Cu2MnAl layers are nonferromagnetic and the critical Josephson current density j(c) decreases exponentially with the thickness of the Heusler layers d(F). On annealing the junctions at 240 degrees C the Heusler layers develop ferromagnetic order and we observe a dependence j(c)(d(F)) with j(c) strongly enhanced and weakly thickness dependent in the thickness range 7.0 < d(F) < 10.6 nm. We interpret this feature as an indication of a triplet component in the superconducting pairing function generated by the specific magnetization profile inside thin Cu2MnAl layers.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000280758300001
DO  - DOI:10.1103/PhysRevB.82.060505
UR  - https://juser.fz-juelich.de/record/10833
ER  -