Orbital order and ferromagnetism in LaMnO3 doped with Ga

Abstract

We study from first principles the magnetic, electronic, orbital and structural properties of the LaMnO3 doped with gallium replacing the Mn-site. The gallium doping reduces the Jahn-Teller effect, and consequently the bandgap. Surprisingly, the system does not go towards a metallic phase because of the Mn-bandwidth reduction. The Ga-doping tends to reduce the orbital order typical of bulk antiferromagnetic LaMnO3 and consequently weakens the antiferromagnetic phase. The Ga-doping favors the G-type orbital order and layered-ordered ferromagnetic perovskite at x=0.50, both effects contribute to the formation of the insulating ferromagnetic phase in LaMn1-xGaxO3.

9 pages, 5 figures, 5 tables

References in corpus (4)

• Ferromagnetic Double Perovskite Semiconductors with Tunable Properties
• Superexchange dominates in magnetic topological insulators
• Persistent half-metallic ferromagnetism in a (111)-oriented manganite superlattice
• Effect of Mn substitution by Ga on the optical properties of a metallic manganite

Cited by in corpus (3)

• Altermagnetic surface states: towards the observation and utilization of altermagnetism in thin films, interfaces and topological materials
• Interplay between altermagnetism and nonsymmorphic symmetries generating large anomalous Hall conductivity by semi-Dirac points induced anticrossings
• Orbital-selective altermagnetism and correlation-enhanced spin-splitting in transition metal oxides