9 papers
Controllable modification of the anisotropy energy in Laves phase YFe2 by Ar+ ion implantation
A. R. Buckingham, G. J. Bowden, D. Wang +4
Implanted 3.25 keV Ar+ ions have been used to modify the in-plane bulk anisotropy in thin films of epitaxially grown Laves phase YFe2. The magneto optical Kerr effect, vibrating sa…
Superconducting plasmonics and extraordinary transmission
A. Tsiatmas, R. Buckingham, V. A. Fedotov +4
Negative dielectric constant and dominant kinetic resistance make superconductors an intriguing plasmonic media. Here we report on the first study of one of the most important and…
Fano Resonances in High-Tc Superconducting Metamaterial
V. A. Fedotov, J. -H. Shi, A. Tsiatmas +3
We demonstrate a millimeter-wave range metamaterial fabricated from cuprate superconductor. Two complementary metamaterial structures have been studied, which exhibit Fano resonanc…
Determination of the Spin Polarization of RFe2 (R = Dy, Er, Y) by Point Contact Andreev Reflection
C. Morrison, D. Wang, G. J. Bowden +2
Epitaxially grown intermetallic RFe2 (R = Dy, Er, Y) thin films have been studied by point contact Andreev reflection. Spin polarization values were extracted by fitting normalized…
Lock-in to commensurate states induced by a periodic array of nanoscale anti-dots in Nb superconductor
A. A. Zhukov, P. A. J. de Groot, V. V. Metlushko +1
We study the interactions of the vortex lattice with a periodic square array of holes in a superconducting Nb film. Using high resolution magnetic field measurements of electrical…
Vortex dynamics in two-dimensional systems at high driving forces
Hans Fangohr, Simon J. Cox, Peter A. J. de Groot
We study numerically the dynamics of two-dimensional vortex systems at zero temperature. In addition to pinned states and turbulent plastic flow, we find motion of vortices in roug…