What question did this study set out to answer?

To resolve the physical mechanism behind the low-temperature electrical resistance minimum observed in dilute magnetic alloys using the s-d interaction model.

July 1, 1964Progress of Theoretical PhysicsOpen Access

Resistance Minimum in Dilute Magnetic Alloys

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Authors

JKJ. KondoUniversidade Federal de Santa Catarina

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Implication

Theoretical modeling demonstrates a logarithmic resistance minimum in dilute magnetic alloys, indicating negative exchange interactions and Fermi surface effects cause this phenomenon.

Key Points

To resolve the physical mechanism behind the low-temperature electrical resistance minimum observed in dilute magnetic alloys using the s-d interaction model.
Calculated conduction electron scattering probability up to the second Born approximation using the s-d exchange model.
Incorporated Pauli exclusion principle restrictions in intermediate scattering states to account for the dynamical spin system and Fermi sphere.
Compared theoretical resistivity predictions and logarithmic temperature dependence with available experimental observations.
Demonstrated that second-order intermediate state scattering introduces a singular resistivity term proportional to c log T, producing a resistance minimum when exchange integral J is negative.
Showed that the temperature of the resistance minimum scales with c^(1/5) and the depth of the minimum scales with impurity concentration c, matching experimental trends.
Determined that a negative exchange integral J of approximately -0.2 eV fits experimental data, confirming that a sharp Fermi surface drives the resistance minimum.

Cite This Study

J. Kondo (1964) studied this question.

synapsesocial.com/papers/69d9c7be387cf706986855cd https://doi.org/10.1143/ptp.32.37

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Implication

Theoretical modeling demonstrates a logarithmic resistance minimum in dilute magnetic alloys, indicating negative exchange interactions and Fermi surface effects cause this phenomenon.

Resistance Minimum in Dilute Magnetic Alloys

Discussion

Member takes

Implication

Key Points

Cite This Study

Resistance Minimum in Dilute Magnetic Alloys

Discussion

Member takes

Implication

Key Points

Cite This Study

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