Details

Autor(en) / Beteiligte

• Wollmann, Lukas
• Fecher, Gerhard H
• Chadov, Stanislav
• Felser, Claudia

Titel

A scheme for spin-selective electron localization in Mn sub(3)Ga Heusler material

Ist Teil von

• Journal of physics. D, Applied physics, 2015-04, Vol.48 (16), p.1-6

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We demonstrate that tetragonal Mn sub(3)Ga Heusler material allows for a new possibility of adjusting an electric current by means of the so-called spin-selective localization of conduction electrons. On the basis of a first-principles analysis, we propose possible chemical substitutes for Mn, which, when used in small quantities, can lead to a disorder-induced localization of the conduction electrons in a single spin channel. Replacement of the Mn in Mn sub(3-x)Y sub(x)Ga with other 3d transition metals Y is known not to change the tetragonal structure for a certain range of x. For Y = Co the range is x [< or =, slanted] 0.5. Therefore, substitution of Co for Mn is used in the present work as a prototype procedure for a detailed demonstration of the underlying physical mechanisms.