38 citations · 73 across the 4 of their papers we have counts for
4 papers
Static vacancies as parametrized conformal defects in the critical -- transverse-field Ising chain
R. L. Silva, R. C. Silva, R. J. C. Lopes +1
We revisit the problem of two static nonmagnetic vacancies in the transverse-field Ising chain with first- and second-neighbor couplings and , now on the critical line,…
Typical skyrmions versus bimerons: a long-distance competition in ferromagnetic racetracks
A. S. Araújo, R. J. C. Lopes, V. L. Carvalho-Santos +4
During the last years, topologically protected collective modes of the magnetization have called much attention. Among these, skyrmions and merons have been the object of intense s…
Predicted antiferromagnetic-vortex dynamics driven by spin polarized current in thin discs
R. L. Silva, R. C. Silva, R. J. C. Lopes +2
We investigate vortex configuration in antiferromagnetic thin discs. It is shown that the vortex acquires oscillatory dynamics with well-defined amplitude and frequency which may b…
Nambu monopoles interacting with lattice defects in two-dimensional artificial square spin ice
R. C. Silva, R. J. C. Lopes, L. A. S. Mól +3
The interactions between an excitation (similar to a pair of Nambu monopoles) and a lattice defect are studied in an artificial two-dimensional square spin ice. This is done by con…