Journal Article

Long-range magnetic interaction in MnFormula omittedGeFormula omitted: structural, spectromicroscopic and magnetic investigations

Tanase, Liviu Cristian, Lungu, George-Adrian, Macovei, Dan, Teodorescu, Cristian-Mihail, Apostol, Nicoleta Georgiana, Barinov, Alexey, Abramiuc, Laura Elena, Bucur, Ioana Cristina, Tache, Cristian-Alexandru, Costescu, Ruxandra Maria

2017

Overview

We report the structural, electronic and magnetic investigation using extended X-ray absorption fine structure spectroscopy (EXAFS), photoelectron microscopy, spin-resolved photoemission and magneto-optical Kerr effect on the properties of Mn Ge systems obtained by molecular beam epitaxy deposition of manganese on Ge(001) wafers annealed on temperatures between 50 and 450 C. Magnetic ordering can be achieved when the substrate temperature is higher than 250 C, when the manganese tends to diffuse into the Ge matrix and segregate in Mn Ge -like compounds, as proved by EXAFS. High spatial resolution photoelectron spectroscopy reveals Mn inhomogeneities in the 5-10 m range, even though Mn is found mostly in the same chemical state all over the surface.

• Publisher: Springer,Springer Nature B.V
• Subject: Epitaxy / Fine structure / Investigations / Kerr magnetooptical effect / Magnetic properties / Manganese / Materials science / microscopy / Molecular beam epitaxy / Optical properties / Organic chemistry / Photoelectric emission / Photoelectrons / Spatial resolution / Spectroscopy / Spectrum analysis / Substrates / temperature / X ray absorption / X-ray absorption spectroscopy