Spintronics on flat surfaces has been studied over the years, and scenario is relatively well-known; however, there a lack of information when we consider non-flat surfaces. In this paper, are concerned about spin dynamics ferromagnetic model spherical surface. We use Schwinger bosonic formalism for describing thermodynamics operators in terms spinon operators. Opposite to two-dimensional model...

A brain surface reconstruction allows advanced analysis of structural and functional brain data that is not possible using volumetric data alone. However, the generation of a brain surface mesh from MRI data often introduces topological defects and artifacts that must be corrected. We show that it is possible to accurately correct these errors using spherical harmonics. Our results clearly demo...

A surface spherical harmonic expansion of gravity anomalies with respect to a geodetic reference ellipsoid can be used to model the global gravity field and reveal its spectral properties. In this paper, a direct and rigorous transformation between solid spherical harmonic coefficients of the Earth’s disturbing potential and surface spherical harmonic coefficients of gravity anomalies in ellips...

Approximately calculating integrals over spherical surfaces in R3 can be done by simple extensions of one dimensional quadrature rules. This, however, does not make use of the symmetry or structure of the integration domain and potentially better schemes can be devised by directly using the integration surface in R3. We investigate several quadrature schemes for integration over a spherical sur...

Volodymyr P. Kravchuk,1,* Denis D. Sheka,2 Robert Streubel,3,4 Denys Makarov,3 Oliver G. Schmidt,3,4 and Yuri Gaididei1 1Bogolyubov Institute for Theoretical Physics, 03143 Kiev, Ukraine 2Taras Shevchenko National University of Kiev, 01601 Kiev, Ukraine 3Institute for Integrative Nanosciences, IFW Dresden, 01069 Dresden, Germany 4Material Systems for Nanoelectronics, Chemnitz University of Tech...

OBJECTIVES: In this paper, we present an exact analytical solution to surface current density for a spherical shaped magnetic field coil, that is capable of producing axially (z) directed field which varies linearly as well as according to the other pure zonal harmonics along the z direction inside the spherical coil. The other aim is to obtain an analytic expression for the surface current den...