16 citations · 41 across the 7 of their papers we have counts for
7 papers
Quantum Spin Effect and Short-Range Order above the Curie Temperature
R. Y. Gu, V. P. Antropov
Using quantum Heisenberg model calculations with Green's function technique generalized for arbitrary spins, we found that for a system of small spins the quantum spin effects sign…
Magnetic Phase Transition in FeRh
R. Y. Gu, V. P. Antropov
Density functional calculations are performed to investigate the phase transition in FeRh alloy. The effective exchange coupling, the critical temperature of magnetic phase transit…
Joint effect of lattice interaction and potential fluctuation in colossal magnetoresistive manganites
R. Y. Gu
Taking into account both the Jahn-Teller lattice distortion and the on-site electronic potential fluctuations in the orbital-degenerated double-exchange model, in which both the co…
Essential Role of the Cooperative Lattice Distortion in the Charge, Orbital and Spin Ordering in doped Manganites
R. Y. Gu, C. S. Ting
The role of lattice distortion in the charge, orbital and spin ordering in half doped manganites has been investigated. For fixed magnetic ordering, we show that the cooperative la…
Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions
R. Y. Gu, L. Sheng, C. S. Ting
The electron tunneling in half metallic manganite tunnel junctions is studied by using a quantum mechanically treated double exchange model. We show that the stimulation of spin ex…
Linear spin and orbital wave theory for undoped manganites
R. Y. Gu, Shun-Qing Shen, Z. D. Wang +1
We present a linear spin and orbital wave theory to account for the spin and orbital orderings observed experimentally in undoped manganite. It is found that the anisotropy of the…