Center for Correlated Electron Systems

Seminar

Searching for the Underneath Magnetic Information in the Low-dimensional System

November 10, 2015l Hit 855
Date : November 19, 2015 14:00 ~ 15:00
Speaker : Prof. Sungkyun Park(Pusan National University)
Location : Bldg. 19, Rm. 210
In material physics (or science), the thin-layered materials exhibited new and different functions which were not available in the bulk systems. In the surge of searching for light, compact, all-in-one functional materials, understanding and discovering the physical origin of thin layered material systems is one of important directions in the material science research. In particular, the presence of interface in the artificial structures (i.e., multilayers and/or superlattices) give more degree of freedom to explore few field of physics in condensed matter. However, it is still challenge to synthesis and characterize the high-quality layered structure materials in the experimental aspect. In particular, examining interfaces, a region between adjacent layers, is not only difficult but also necessary tactic in low-dimensional material system.
In the case of magnetism, the magnetic properties of ultra-thin films are mostly governed by the interface magnetism. In particular, the magnetic anisotropy, spin-transport properties, etc. can be modified due to the presence of the interfacial lattice mismatch in the hetero-interface (for example magnetic/nonmagnetic) system. Therefore, there much effects to investigate the non-uniform magnetic distribution across the interface. In this presentation, I will illustrate the polarized neutron reflectometry as a handy tool exploring underneath magnetic information on the layered magnetic structure.