Fabrication of high quality ferromagnetic Josephson junctions
M. Weides, K. Tillmann, H. Kohlstedt
Abstract
We present ferromagnetic Nb/Al2O3/Ni60Cu40/Nb Josephson junctions (SIFS) with an ultrathin Al2O3 tunnel barrier. The junction fabrication was optimized regarding junction insulation and homogeneity of current transport. Using ion-beam-etching and anodic oxidation we defined and insulated the junction mesas. The additional 2 nm thin Cu layer below the ferromagnetic NiCu (SINFS) lowered interface roughness and ensured very homogeneous current transport. A high yield of junctional devices with jc spreads less than 2% was obtained.
Create a lesson
Related papers
Altermagnetic Control of Charge-4e Superconductivity
Yan-Guang Yue, Jie Lou, Yan Chen
Electron- and hole-doped superconductivity in two-dimensional electride ZrX2 (X = Cl, Br, I)
Tian-Xin Liu, Xin-Yang Li, Zuo-Wei Yin et al.
Enhanced Coulomb pseudopotentials in high-pressure hydrides from first principles
Kieran Bozier, Chris J. Pickard
Pressure-induced double-dome superconductivity in doped kagome metal Cs(V0.86Ta0.14)3Sb5 without charge density wave
Haochen Sun, Jing Wang, Deng Hu et al.
Electric and Heat Transport in One-Dimensional SNS Junctions with Energy-Dependent Transmission
Kai Tsutsumi, Shun Uchino
From band reconstruction to Bogoliubov dispersion: How dz2-band enhances iron-based superconductivity
Jingming Yan, Shendong Su, Guihao Jia et al.