ELFT HÍRADÓ

[Szeminárium koordinátor <sem-admin AT wigner.hun-ren.hu>]

SZFI SeminarVladimir FominInstitute for Emerging Electronic Technologies, 
Leibniz IFW Dresden, Germany; Moldova State University, Republic of Moldova 
(host: Újfalussy Balázs)New Developments in Topological, Chiral and 
Reconfigurable Superconductor NanoarchitecturesMonday, 12 January 2026, 
10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference Room Advanced high-tech 
fabrication techniques allowed for fabrication of geometrically complex and 
topologically nontrivial 3D nanoarchitectures [1] triggers the emergence of 
new physical phenomena [2,3]. Relying upon the time-dependent Ginzburg-Landau 
equation, a variety of vortex chains, vortex jets, and phase-slip regimes due 
to the inhomogeneity of the normal magnetic field component are unveiled in 
3D nanoarchitectures. A topological transition between the vortex and 
phase-slip regimes determines the magnetic-field--voltage and 
current--voltage characteristics revealing a nontrivial topology of SC 
screening currents [4,5]. Various dynamic topological transitions in 
superconductor open nanotubes take place under a combined dc+ac transport 
current [6], leading to vortex frequency locking and Shapiro steps [7]. In 
directly written superconductor 3D nanoarchitectures, a strong geometrical 
anisotropy of the critical magnetic field gives rise to the reconfigurable 
coexistence of superconducting and normal states. In this novel regime of 
nano-superconductivity, the vortex state can be designed and manipulated by 
geometric confinement [8]. Recently, a conformal approach has been proven to 
be efficient for physics simulations in thin curved 3D membranes [9].V. M. 
Fomin, Self-rolled micro- and nanoarchitectures: Effects of topology and 
geometry, De Gruyter, Berlin--Boston, 2021, 148 p.V. M. Fomin, O. V. 
Dobrovolskiy, A perspective on superconductivity in curved 3D 
nanoarchitectures”, Appl. Phys. Lett. 120, 090501, 1-12 (2022). R. Córdoba, 
V. M. Fomin, Topological and chiral superconductor nanoarchitectures, Applied 
Physics Letters 124, 170501, 1-9 (2024). R. O. Rezaev, E. I. Smirnova, O. G. 
Schmidt, V. M. Fomin, Topological transitions in superconductor nanomembranes 
in a magnetic field with submicron inhomogeneity under a strong transport 
current, Communications Physics 3, 144, 1-8 (2020). I. Bogush, V. M. Fomin, 
Topological defects in superconductor open nanotubes after gradual and abrupt 
switch-on of the transport current and magnetic field, Phys. Rev. B 105, 
094511, 1-11 (2022). V. M. Fomin, R. O. Rezaev, O. V. Dobrovolskiy, 
Topological transitions in ac/dc-driven superconductor nanotubes, Scientific 
Reports 12, 10069, 1-10 (2022).I. Bogush, V. M. Fomin, O. V. Dobrovolskiy, 
Vortex frequency locking and Shapiro steps in superconductor open nanotubes, 
Phys. Rev. B 111, 214510, 1-10 (2025)E. Zhakina, L. A. Turnbull, W. Xu, M. 
König, P. Simon, W. Carrillo-Cabrera, A. Fernández-Pacheco, U. Vool, D. 
Suess, C. Abert, V. M. Fomin, C. Donnelly, Reconfigurable Three-Dimensional 
Superconducting Nanoarchitectures, Adv. Funct. Mater. 35, 2506057, 1-9 
(2025). I. Bogush, V. M. Fomin, O. V. Dobrovolskiy, Conformal approach to 
physics simulations for thin curved 3D membranes, Computer Physics 
Communications 315, 109736, 1-14 (2025).   Minden érdeklődőt szívesen 
látunk! - Everyone is welcome to attend.Attila Nagysem-admin AT wigner.hun-ren.hu