First principle study on Strontium Magnates (SrMnO3) Electronic Structure, Magnetic Properties and Lattice Instability of SrMnO3
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- Englisch ausgewählt
Fr. 55.90
inkl. gesetzl. MwSt.,
Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
24.07.2013
Verlag
LAP LAMBERT Academic PublishingSeitenzahl
88
Maße (L/B/H)
22/15/0.6 cm
Gewicht
149 g
Sprache
Englisch
ISBN
978-3-659-42908-8
The electronic structure and magnetic properties of cubic and hexagonal SrMnO3 are calculated using QuantumESPRESSO package within density functional theory in generalized gradient approximation GGA and GGA+U. The structural and electronic properties are obtained for several different possible magnetic configurations. In cubic and hexagonal cases the ground states show AF ordering. The GGA+U giving insulating properties paramagnetic and ferromagnetic for both phases better than GGA but in the cases of cubic ferromagnetic the system treats as half metallic properties. This half metallic property may be interesting in connection with spintronics devices if the hypothetical ferromagnetic configuration can be stabilized. The phonon result of ferromagnetic cubic SrMnO3 clearly indicates the presence of instability in the phases and a good indication of existent of other phases more sable than this cubic ferromagnetic phases.
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