What question did this study set out to answer?

Formulate and refine a microscopic exchange model to explain zero-bias tunneling conductance anomalies observed across transition metal-oxide-metal junctions.

February 15, 1967Physical Review

Exchange Model of Zero-Bias Tunneling Anomalies

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JAJoel A. AppelbaumTel Aviv University

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Implication

Theoretical analysis reveals how exchange-induced interference scattering drives anomalous conductance in transition metal tunnel junctions, highlighting the microscopic mechanisms behind...

Key Points

Formulate and refine a microscopic exchange model to explain zero-bias tunneling conductance anomalies observed across transition metal-oxide-metal junctions.
Derived a microscopic tunneling Hamiltonian and established its formal relationship with Anderson's localized state framework.
Evaluated interference scattering effects and generated exact numerical solutions for conductance across temperature, voltage, and magnetic field variations.
Model accounts for the observed magnitude as well as the temperature- and voltage-dependence of conductance anomalies in transition metal (Ta, Nb) to normal metal (Al) junctions.
Exact numerical evaluations successfully characterize the magnetic field dependence of anomalous conductance, superseding earlier qualitative interpolation approximations.

Cite This Study

Joel A. Appelbaum (1967) studied this question.

synapsesocial.com/papers/6a0f4bb55093bfd8189bcbfa https://doi.org/10.1103/physrev.154.633

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Implication

Theoretical analysis reveals how exchange-induced interference scattering drives anomalous conductance in transition metal tunnel junctions, highlighting the microscopic mechanisms behind...

Exchange Model of Zero-Bias Tunneling Anomalies

Discussion

Member takes

Implication

Key Points

Cite This Study

Exchange Model of Zero-Bias Tunneling Anomalies

Discussion

Member takes

Implication

Key Points

Cite This Study

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