First-principles study of quantum-transport properties of Fe/Fe(2)VAI/Fe trilayers: Design for confined k-space current-perpendicular-to-plane giant-magnetoresistance

作者：Yabuuchi Shin^*; Kitagawa Sap

来源：Japanese Journal of Applied Physics, 2014, 53(9): 093004.

DOI：10.7567/JJAP.53.093004

The electronic structure and quantum-transport properties of Fe/Fe(2)VAI/Fe trilayers were investigated by using first-principles calculations. The high-transmission area in k-space can be confined by using a semimetallic Fe(2)VAI layer. The confined k-space originates from the small Fermi surface of Fe(2)VAI. Moreover, the symmetry matching of wave functions between the leads and space of the trilayer around the Fermi level is a significant factor in regard to designing confined-k-space current-perpendicular-to-plane giant-magnetoresistance (CPP-GMR) device, which is a promising candidate to provide a resistance area (RA) product that is difficult to achieve by using conventional insulators and metals.

• 出版日期2014-9