Zobrazeno 1 - 10
of 253
pro vyhledávání: '"Jankó, B."'
Publikováno v:
Appl. Phys. Lett. 118, 162601 (2021)
We numerically examine the ordering, pinning and flow of superconducting vortices interacting with a Santa Fe artificial ice pinning array. We find that as a function of magnetic field and pinning density, a wide variety of vortex states occur, inclu
Externí odkaz:
http://arxiv.org/abs/2101.11664
Publikováno v:
Phys. Rev. B 104, 024504 (2021)
We examine pinning and dynamics of Abrikosov vortices interacting with pinning centers placed in a moir\'e pattern for varied moir\'e lattice angles. We find a series of magic angles at which the critical current shows a pronounced dip corresponding
Externí odkaz:
http://arxiv.org/abs/2012.09937
Autor:
Reichhardt, C. J. Olson, Wang, Y. L., Xiao, Z. L., Kwok, W. K., Ray, D., Reichhardt, C., Janko, B.
Publikováno v:
Physica C 533, 148 (2017)
A conformal pinning array can be created by conformally transforming a uniform triangular pinning lattice to produces a new structure in which the six-fold ordering of the original lattice is conserved but where there is a spatial gradient in the den
Externí odkaz:
http://arxiv.org/abs/1602.03912
Publikováno v:
Physica C 503, 123 (2014)
We examine the current driven dynamics for vortices interacting with conformal crystal pinning arrays and compare to the dynamics of vortices driven over random pinning arrays. We find that the pinning is enhanced in the conformal arrays over a wide
Externí odkaz:
http://arxiv.org/abs/1312.7850
Publikováno v:
Phys. Rev. Lett. 110, 267001 (2013)
Conformal crystals are non-uniform structures created by a conformal transformation of regular two-dimensional lattices. We show that gradient-driven vortices interacting with a conformal pinning array exhibit substantially stronger pinning effects o
Externí odkaz:
http://arxiv.org/abs/1210.1229
The ground state with vorticity larger than one in mesoscopic superconductors in applied magnetic field may manifest as a `giant'-vortex, where all vortices coalesce into a single singularity of the order parameter. Such a multi-quanta vortex may spl
Externí odkaz:
http://arxiv.org/abs/1106.6220
Autor:
Geresdi, A., Halbritter, A., Csontos, M., Csonka, Sz., Mihaly, G., Wojtowicz, T., Liu, X., Janko, B., Furdyna, J. K.
Results of point contact Andreev reflection (PCAR) experiments on (In,Mn)Sb are presented and analyzed in terms of current models of charge conversion at a superconductor-ferromagnet interface. We investigate the influence of surface transparency, an
Externí odkaz:
http://arxiv.org/abs/0801.1464
Autor:
Mihaly, G., Csontos, M., Bordacs, S., Kezsmarki, I., Wojtowicz, T., Liu, X., Janko, B., Furdyna, J. K.
High magnetic field study of Hall resistivity in the ferromagnetic phase of (In,Mn)Sb allows one to separate its normal and anomalous components. We show that the anomalous Hall term is not proportional to the magnetization, and that it even changes
Externí odkaz:
http://arxiv.org/abs/0709.0059
Publikováno v:
Phys. Rev. Lett. 102, 137203 (2009)
We compare experimental resistivity data on Ga_{1-x}Mn_xAs films with theoretical calculations using a scaling theory for strongly disordered ferromagnets. All characteristic features of the temperature dependence of the resistivity can be quantitati
Externí odkaz:
http://arxiv.org/abs/0705.2016
Publikováno v:
Phys. Rev. Lett. 96, 188301 (2006)
We show that a rich variety of dynamic phases can be realized for mono- and bidisperse mixtures of interacting colloids under the influence of a symmetric flashing periodic substrate. With the addition of dc or ac drives, phase locking, jamming, and
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508299