Graphic Interface Implementation for Studying Magnetotransport Properties in Bilayers of Manganites Type Perovskite

Ingeniería y Ciencia

Restrepo-Parra, Elisabeth¹  Barco Ríos, Héctor¹  Rojas Calderón, Edilberto¹ 

[1] Universidad Nacional de Colombia, Manizales, Colombia

关键词: resistivity;    magnetoresistance;    monte carlo;    manganites;    critical points;   

DOI  :  

学科分类：工程和技术（综合）

来源: Universidad E A F I T

【 摘 要 】

In this work, a study of some magnetotransport properties of manganite bilayers of ferromagnetic/Antiferromagnetic (FM/AF) La2/3Ca1/3MnO3/ La1/3Ca2/3MnO3 is presented. This study was carries out using the Monte Carlo method combined with Drude and Kronig-Penney models. For doing the simulations, graphic interfaces for allowing a suitable user interaction were developed. These interfaces also allow observing the simulation processes in real time. Results of resistivity and magnetoresistance as a function on the temperature and the external magnetic field were obtained. The resistivity depending on the temperature presented a minimum around the canted temperature and a maximum around the Curie temperature, TC. A decrease in the resistivity and an increase in the magnetoresistance as the external magnetic field increases were observed. On the other hand, resistivity as a function on the temperature showed symmetry for positive and negative values of the external magnetic field. Moreover, at low temperatures, below TC, the resistivity presented a splitting, producing two maxima and forming hysteresis loops.

【 授权许可】

Unknown