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A Quantum Theory of Double Exchange. I

Journal of the Physical Society of Japan · 1972 · Vol. 33(1) · pp. 21–32

Kenn Kubo✉(The University of Tokyo)N. Ohata(The University of Tokyo)

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Abstract

Metallic double-exchange ferromagnets such as doped LaMnO 3 are investigatd on the basis of an efffective Hamiltonian derived from the s - d model Hamiltonian. Resistance at low temperatures is calculated in the spin wave approximation and it is found to be proportional to T 9/2 . Magnetic behaviors of the system at finite temperatures are examined by the use of a simple molecular field theory. A magnetization-temperature curve which firs well the experimental data of Leung et al. is obtained. Resistance and magneto-resistance are also studied.

Magnetic and transport properties of perovskites and related materials Advanced Condensed Matter Physics Atomic and Subatomic Physics ResearchCondensed matter physicsHamiltonian (control theory)FerromagnetismExchange interactionPhysicsMagnetizationQuantumMetalSpin waveDoping

Citations

777

FWCI

1.80

field-weighted impact

References

23

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81%

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References

Interaction between the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>-Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite Structure

Physical Review · 1951 · 6,635 citations

Magnetic Properties of Cu-Mn Alloys

Physical Review · 1957 · 3,126 citations

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Physical Review · 1955 · 2,388 citations

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Physical Review · 1955 · 2,974 citations

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Journal of Physics and Chemistry of Solids · 1958 · 603 citations

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Journal of the Physical Society of Japan · 1954 · 1,917 citations

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Physical Review · 1960 · 3,016 citations

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