期刊
PHYSICAL REVIEW B
卷 81, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.113106
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资金
- National Science Foundation [DMR-0426826, DMR-0907150]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0907150] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [GRANTS:14002438] Funding Source: National Science Foundation
We investigate minimal molecular junction models to account for zero-bias anomaly and the inelastic transport by discrete molecular phonons. Nonlinear transport calculations with the imaginary-time nonequilibrium formalism shows that (highest-occupied-molecular-orbital)-(lowest-unoccupied-molecular-orbital) model with Anderson-Holstein interaction produces significant cotunneling conductance peaks in the vicinity of Kondo resonance, mediated by many-body resonance assisted by phonons at bias equal to the phonon frequency. Destruction of the resonance leads to negative-differential resistance in the sequential tunneling regime.
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