Title :
Spin filter behaviour of atomic NiO chains in Ni nanocontacts
Author :
Jacob, David ; Fernández-Rossier, J. ; Palacios, J.J.
Author_Institution :
Univ. de Alicante, Alicante
Abstract :
Contrary to the antiferromagnetic and insulating character of bulk NiO, we show by means of ab initio quantum transport calculations that short atomic NiO chains suspended between Ni nanocontacts can become strongly spin-polarized conductors. They could thus serve as nanoscopic spin filters. Here we study the stability of our results against geometrical distortions of the atomic chain and the nanocontact.
Keywords :
ab initio calculations; antiferromagnetic materials; nanocontacts; nickel compounds; spin polarised transport; NiO; NiO - Binary; ab initio calculations; antiferromagnetic character; atomic chains; insulating character; nanocontacts; nanoscopic spin filter; quantum transport calculations; spin polarized conductors; Antiferromagnetic materials; Ballistic magnetoresistance; Bridges; Conductors; Filters; Geometry; Insulation; Nanocontacts; Nickel; Polarization; Spin valve; ballistic magnetoresistance; nanocontact;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0541-1
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388933
