2010•Journal of Applied PhysicsRequires access

The three-dimensional mixed-spin Heisenberg model applied to the magnetic properties of La1−xSrxMnO3 in the random phase approximation

Ai-Yuan Hu, Yuan Chen, Qin Wang

Abstract

The magnetic properties of the manganese oxide compounds La1−xSrxMnO3 are studied by means of the double-time Green’s function. The phase diagram, magnetization, spin-wave dispersion, and spin-wave stiffness are obtained within the random phase approximation. Our results are in agreement with other theoretical and experimental results.

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Key concepts: Random phase approximation, Condensed matter physics, Magnetization, Heisenberg model, Spin wave, Phase diagram, Phase (matter), Spin (aerodynamics)