Geometrical barriers and the growth of flux domes in thin ideal superconducting disks (2008)
When an ideal (no bulk pinning) flat type-II superconducting disk is subjected to a perpendicular magnetic field H_a, the first vortex nucleates at the rim when H_a = H_0, the threshold field, and...
Field and current distributions and ac losses in a bifilar stack of superconducting strips (2008)
In this paper I first analytically calculate the magnetic-field and sheet-current distributions generated in an infinite stack of thin superconducting strips of thickness d, width 2a >> d, and...
ac Losses in a Finite Z Stack Using an Anisotropic Homogeneous-Medium Approximation (2007)
Clem, John R, Claassen, J. H., Mawatari, Yasunori
A finite stack of thin superconducting tapes, all carrying a fixed current I, can be approximated by an anisotropic superconducting bar with critical current density Jc=Ic/2aD, where Ic is the...
Clem, John R., Brojeny, Ali A. Babaei, Mawatari, Yasunori
We calculate the magnetic-field dependence of the critical current due to both geometrical edge barriers and bulk pinning in a periodic coplanar array of narrow superconducting strips. We find that...
Analytical model of the response of a superconducting film to line currents (2006)
Mawatari, Yasunori, Clem, John R.
We theoretically investigate the response of a superconducting film to line currents flowing in linear wires placed above the film, and we present analytic expressions for the magnetic-field and...
Flux domes in superconducting films without edges (2006)
Clem, John R., Mawatari, Yasunori
Domelike magnetic-flux-density distributions previously have been observed experimentally and analyzed theoretically in superconducting films with edges, such as in strips and thin plates. Such flux...
When an electron beam strikes a superconducting thin film near a pinned vortex, it locally increases the temperature-dependent London penetration depth and perturbs the circulating supercurrent,...
Response of thin-film SQUIDs to applied fields and vortex fields: Linear SQUIDs (2005)
Clem, John R., Brandt, Ernst Helmut
In this paper we analyze the properties of a dc SQUID when the London penetration depth \lambda is larger than the superconducting film thickness d. We present equations that govern the static...
DYNAMICAL PROPERTIES OF A ONE-DIMENSIONAL 'CRYSTAL' WITH FREE ENDS, (2005)
CLEM,John R., Godwin,Robert P.
The one-dimensional free end crystal model is examined. Calculations are made of dynamical quantities (atomic mean square displacements and velocities), and it is shown that these results are...
Self-field effects upon the critical current density of flat superconducting strips (2004)
Brojeny, Ali A. Babaei, Clem, John R.
We develop a general theory to account self-consistently for self-field effects upon the average transport critical current density Jc of a flat type-II superconducting strip in the mixed state when...
I describe the magnetic-field and current-density distributions generated by two-dimensional (2D) pancake vortices in infinite, semi-infinite, and finite-thickness stacks of Josephson-decoupled...
Superconducting thin rings with finite penetration depth (2003)
Brandt, Ernst Helmut, Clem, John R.
Recently Babaei Brojeny and Clem [Phys. Rev. B 68, 174514 (2003)] considered superconducting thin-film rings in perpendicular magnetic fields in the ideal Meissner state with negligibly small...
Properties of mesoscopic superconducting thin-film rings. London approach (2003)
Kogan, V. G., Clem, John R., Mints, R. G.
Superconducting thin-film rings smaller than the film penetration depth (the Pearl length) are considered. The current distribution, magnetic moment, and thermodynamic potential ${\cal F}(H,N,v)$ for...
Magnetic-field and current-density distributions in thin-film superconducting rings and disks (2003)
Brojeny, Ali A. Babaei, Clem, John R.
We show how to calculate the magnetic-field and sheet-current distributions for a thin-film superconducting annular ring (inner radius a, outer radius b, and thickness d
Geometrical edge barriers and magnetization in superconducting strips with slits (2003)
Mawatari, Yasunori, Clem, John R.
We theoretically investigate the magnetic-field and current distributions for coplanar superconducting strips with slits in an applied magnetic field H_a. We consider ideal strips with no bulk...
Elistratov, Andrey A., Vodolazov, Denis Yu., Maksimov, Igor L., Clem, John R.
Recent theoretical and experimental research on low-bulk-pinning superconducting strips has revealed striking dome-like magnetic-field distributions due to geometrical edge barriers. The observed...
Vortices in magnetically coupled superconducting layered systems (1999)
Mints, Roman G., Kogan, Vladimir G., Clem, John R.
Pancake vortices in stacks of thin superconducting films or layers are considered. It is stressed that in the absence of Josephson coupling topological restrictions upon possible configurations of...