Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Maria Iavarone"'
Autor:
Goran Karapetrov, Maria Longobardi, Maria Iavarone, S. A. Moore, V. G. Yefremenko, A. M. Cucolo, Alessandro Scarfato, F. Bobba, V. Novosad
Publikováno v:
IEEE Transactions on Magnetics. 48:3275-3279
We use low temperature magnetic force microscopy and global magnetometry measurements to study the influence of magnetic domains on the Abrikosov vortex pinning in planar superconducting/ferromagnet bilayers. The superconducting/ferromagnet bilayers
Autor:
Goran Karapetrov, Maria Iavarone, Goran Mihajlovic, John E. Pearson, S. D. Bader, V. Novosad, Volodymyr Yefremenko
Publikováno v:
Physical Review B. 86
We report on dynamics of non-local Abrikosov vortex flow in mesoscopic superconducting Nb channels. Magnetic field dependence of the non-local voltage induced by the flux flow shows that vortices form ordered vortex chains. Voltage asymmetry (rectifi
Autor:
Valentine Novosad, Goran Karapetrov, Ulrich Welp, Maria Iavarone, Vitalii Vlasko-Vlasov, Daniel Rosenmann, Andrey Belkin, W. K. Kwok
Publikováno v:
Physical Review B. 77
We demonstrate a unique prospect for inducing anisotropic vortex pinning and manipulating the directional motion of vortices using the stripe domain patterns of a uniaxial magnetic film in a the superconducting/ferromagnetic hybrid. Our observations
Publikováno v:
AIP Conference Proceedings.
Superconductors containing mesoscopic artificially‐engineered defects are orders of magnitude more resistant to the detrimental effect of the magnetic field. Here we present scanning tunnelling microscopy study of the vortex lattice configurations
Autor:
Maria Iavarone, D Mancusi, A. M. Cucolo, C. Di Giorgio, Massimiliano Polichetti, V. G. Yefremenko, Alessandro Scarfato, Valentine Novosad, S. A. Moore, Goran Karapetrov, Fabrizio Bobba, Sandro Pace
Publikováno v:
Superconductor Science and Technology. 27:125002
A magnetic study of superconductor/ferromagnet bilayers was performed by hysteresis loops and temperature-dependent magnetization measurements. The superconductor/ferromagnet bilayers consist of a Nb film deposited on a Py film with weak perpendicula
Publikováno v:
Physica C: Superconductivity. :952-953
The direct imaging of vortices in heterostructures superconductor/normal metal on a sub-micron scale highlights a new breakthrough in exploring confinement effects in vortex dynamics. Using scanning tunneling microscopy and spectroscopy, we mapped th
Autor:
Ralu Divan, Valentine Novosad, Andrey Belkin, Goran Karapetrov, Volodymyr Yefremenko, John E. Pearson, Vladimír Cambel, Maria Iavarone
Publikováno v:
Superconductor Science and Technology. 24:024012
We report on the vortex dynamics in magnetically coupled F-S-F trilayers extracted from the analysis of the resistance-current isotherms. The superconducting thin film that is conventionally in the 2D vortex limit exhibits quite different behavior wh
Publikováno v:
Applied Physics Letters. 87:162515
Enhanced vortex pinning in nanoscale-engineered superconductors increases the superconducting critical currents by orders of magnitude. Spatial imaging of vortices in these systems at high magnetic fields would provide further insight into the pinnin