Ambipolar transition voltage spectroscopy: analytical results and experimental agreement
This work emphasizes that the transition voltages Vt± for both bias polarities (V ≷ 0) should be used to properly determine the energy offset ɛ0 of the molecular orbital closest to electrodes’ Fermi level and the bias asymmetry γ in molecular junctions. Accurate analytical formulas are deduced to es...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
25 January 2012
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| In: |
Physical review. B, Condensed matter and materials physics
Year: 2012, Volume: 85, Issue: 3, Pages: 1-5 |
| ISSN: | 1550-235X |
| DOI: | 10.1103/PhysRevB.85.035442 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevB.85.035442 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.85.035442 
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| Author Notes: | Ioan Bâldea |
| Summary: | This work emphasizes that the transition voltages Vt± for both bias polarities (V ≷ 0) should be used to properly determine the energy offset ɛ0 of the molecular orbital closest to electrodes’ Fermi level and the bias asymmetry γ in molecular junctions. Accurate analytical formulas are deduced to estimate ɛ0 and γ solely in terms of Vt±. These estimates are validated against experiments, by showing that full experimental I-V curves measured by Beebe et al. [Phys. Rev. Lett. 97, 026801 (2006)] and Tan et al. [Appl. Phsy. Lett. 96, 013110 (2010)] for both bias polarities can be excellently reproduced. |
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| Item Description: | Gesehen am 03.08.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1550-235X |
| DOI: | 10.1103/PhysRevB.85.035442 |