Zobrazeno 1 - 10
of 238
pro vyhledávání: '"Eskildsen M"'
We examine an assembly of repulsive disks interacting with a random obstacle array under a periodic drive, and find a transition from reversible to irreversible dynamics as a function of drive amplitude or disk density. At low densities and drives, t
Externí odkaz:
http://arxiv.org/abs/2401.18042
Numerical simulations are used to examine the transition dynamics between metastable and ground state vortex lattice phases in a system with combined sixfold and twelvefold contributions to the vortex-vortex interactions. The system is initially anne
Externí odkaz:
http://arxiv.org/abs/2211.05045
Publikováno v:
New J. Phys. 24, 073029 (2022)
We examine the dynamics of superconducting vortices with two-fold anisotropic interaction potentials driven over random pinning and compare the behavior under drives applied parallel and perpendicular to the anisotropy direction. The number of topolo
Externí odkaz:
http://arxiv.org/abs/2203.00617
Autor:
Louden, E. R., Manni, S., Van Zandt, J. E., Leishman, A. W. D., Taufour, V., Bud'ko, S. L., DeBeer-Schmitt, L., Honecker, D., Dewhurst, C. D., Canfield, P. C., Eskildsen, M. R.
Publikováno v:
J. Appl. Cryst. 55, 693 (2022)
Using small-angle neutron scattering we have studied the vortex lattice in superconducting MgB$_2$ with the magnetic field applied along the $c$-axis, doped with either manganese or carbon to achieve a similar suppression of the critical temperature.
Externí odkaz:
http://arxiv.org/abs/2202.10490
Autor:
Avers, K. E., Gannon, W. J., Leishman, A. W. D., DeBeer-Schmitt, L., Halperin, W. P., Eskildsen, M. R.
Publikováno v:
Front. Electron. Mater. 2, 878308 (2022)
We have used small-angle neutron scattering to determine the vortex lattice phase diagram in the topological superconductor UPt3 for the applied magnetic field along the crystalline c-axis. A triangular vortex lattice is observed throughout the super
Externí odkaz:
http://arxiv.org/abs/2202.08878
Autor:
Avers, K. E., Kuhn, S. J., Leishman, A. W. D., Gannon, W. J., DeBeer-Schmitt, L., Dewhurst, C. D., Honecker, D., Cubitt, R., Halperin, W. P., Eskildsen, M. R.
Publikováno v:
Phys. Rev. B 105, 184512 (2022)
When studied by small-angle neutron scattering the vortex lattice (VL) in UPt3 undergoes a gradual disordering as a function of time due to 235U fission. This temporarily heats regions of the sample above the critical temperature, where, upon re-cool
Externí odkaz:
http://arxiv.org/abs/2103.09843
Publikováno v:
Phys. Rev. B 103, 094516 (2021)
Using small-angle neutron scattering we have studied the superconducting vortex lattice (VL) phase diagram in MgB2 as the applied magnetic field is rotated away from the c axis and towards the basal plane. The field rotation gradually suppresses the
Externí odkaz:
http://arxiv.org/abs/2101.04191
Autor:
Leishman, A. W. D., Menezes, R. M., Longbons, G., Bauer, E. D., Janoschek, M., Honecker, D., DeBeer-Schmitt, L., White, J. S., Sokolova, A., Milosevic, M. V., Eskildsen, M. R.
Publikováno v:
Phys. Rev. B 102, 104416 (2020)
We report the direct measurement of the topological skyrmion energy barrier through a hysteresis of the skyrmion lattice in the chiral magnet MnSi. Measurements were made using small-angle neutron scattering with a custom-built resistive coil to allo
Externí odkaz:
http://arxiv.org/abs/2005.06031
Publikováno v:
Phys. Rev. B 101, 224504 (2020)
We introduce a new model for a pairwise repulsive interaction potential of vortices in a type-II superconductor, consisting of superimposed six- and 12-fold anisotropies. Using numerical simulations we study how the vortex lattice configuration varie
Externí odkaz:
http://arxiv.org/abs/1910.06885
Autor:
Louden, E. R., Leishman, A. W. D., Rastovski, C., Kuhn, S. J., DeBeer-Schmitt, L., Dewhurst, C. D., Zhigadlo, N. D., Eskildsen, M. R.
Publikováno v:
New J. Phys. 21, 063003 (2019)
The vortex lattice in MgB2 is characterized by the presence of long-lived metastable states, which arise from cooling or heating across the equilibrium phase boundaries. A return to the equilibrium configuration can be achieved by inducing vortex mot
Externí odkaz:
http://arxiv.org/abs/1902.08512