Helical Spin Structures in c-Axis Dy/Y Superlattice

Domain structures and temperature-dependent spin reorientation transitions in c-axis oriented Co–Cr thin films

Highly c-axis oriented Co95Cr5 films with perpendicular anisotropy were grown epitaxially on Si ~111!, using an Ag seed layer, by physical vapor deposition. Films were characterized by x-ray diffraction, transmission electron microscopy ~TEM!, selected area electron diffraction, and Lorentz microscopy in a TEM. The following epitaxial relationship was confirmed: (111)Sii(111)Agi(0001)CoCr ;@ 2̄2...

Quantum confinement phenomena in nanowire superlattice structures

Nanowire superlattices (NWSLs) are objects with a wide range of potential applications in nanoscale electronics and photonics. These objects are already grown experimentally in laboratories and studies of their properties represent an important task in nanotechnology research. Tools of mathematical modelling provide a powerful means for studying these fascinating structures with an ultimate goa...

Results from helical axis stellarators

Corrigendum: Stiffness in vortex—like structures due to chirality-domains within a coupled helical rare-earth superlattice

Vortex domain walls poses chirality or 'handedness' which can be exploited to act as memory units by changing their polarity with electric field or driving/manupulating the vortex itself by electric currents in multiferroics. Recently, domain walls formed by one dimensional array of vortex-like structures have been theoretically predicted to exist in disordered rare-earth helical magnets with t...

Persistent Currents in Helical Structures

Recent discovery of mesoscopic electronic structures, in particular the carbon nanotubes, made necessary an investigation of what effect may helical symmetry of the conductor (metal or semiconductor) have on the persistent current oscillations. We investigate persistent currents in helical structures which are non-decaying in time, not requiring a voltage bias, dissipationless stationary flow o...