The  paper of  the  month,  chosen  by  the Editor-in-Chief,  is  "Spontaneous Magnetization and Nonmagnetic Defect Effects in Mesoscopic s+ i s Superconductors"  by G. Wang, T.-Y. Han,  J. Li and H. Huang;

DOI: 10.12693/APhysPolA.147.317

In the present paper, the authors study iron-based superconductors with state without time reversal symmetry. The existence of states that break the time reversal symmetry has been proposed for some doping levels. It is shown in the paper that spontaneous magnetization appears near the extended impurities in these superconductors. A two-band model based on the Ginzburg-Landau theory is used to study the effect. Numerical solutions to the resulting equations are presented in the case of a small superconducting flake and in the case of four and eight impurities symmetrically placed inside superconductors. This is a nice example of the interplay between superconductivity and magnetism that leads to symmetry breaking. The paper will be of interest to a broad range of physicists interested in various aspects of symmetry breaking.

 

The Editor-in-Chief

Published: 30.04.2025

DOI: https://doi.org/10.12693/APhysPolA.147.298

Magnetic and Electric Properties of Ca2Fe2-xAlxO5 Brownmillerites Obtained by Ball Milling High-Energy Process

T. Luciński, E. Markiewicz*, B. Andrzejewski, M. Pugaczowa-Michalska, K. Chybczyńska, V.H. Tran, R. Idczak, M.P. Skokowski, M. Chrunik, B. Kościelska (Author)

289

DOI: https://doi.org/10.12693/APhysPolA.147.289
DOI: https://doi.org/10.12693/APhysPolA.147.309
DOI: https://doi.org/10.12693/APhysPolA.147.317
DOI: https://doi.org/10.12693/APhysPolA.147.324
DOI: https://doi.org/10.12693/APhysPolA.147.333
DOI: https://doi.org/10.12693/APhysPolA.147.343

Temperature Dependence of the Occupancy of Landau Subbands in a Two-Dimensional Electron Gas

B.T. Abdulazizov, P.J. Baymatov, A.A. Saydaliev, O.M. Yunusov, K.N. Juraev (Author)

352

DOI: https://doi.org/10.12693/APhysPolA.147.352