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Quantum interferenc...
Quantum interference effects at room temperature in OPV-based single-molecule junctions
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- Arroyo, C.R. (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Frisenda, R. (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Moth-Poulsen, Kasper, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Seldenthuis, J.S. (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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- Bjornholm, T. (författare)
- Köpenhamns universitet,University of Copenhagen
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- van der Zant, Herre (författare)
- Technische Universiteit Delft,Delft University of Technology (TU Delft)
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
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Ingår i: Nanoscale Research Letters. - 1556-276X .- 1931-7573. ; 8:1
- Relaterad länk:
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http://publications.... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Interference effects on charge transport through an individual molecule can lead to a notable modulation and suppression on its conductance. In this letter, we report the observation of quantum interference effects occurring at room temperature in single-molecule junctions based on oligo(3)-phenylenevinylene (OPV3) derivatives, in which the central benzene ring is coupled to either para- or meta-positions. Using the break-junction technique, we find that the conductance for a single meta-OPV3 molecule wired between gold electrodes is one order of magnitude smaller than that of a para-OPV3 molecule. Theoretical calculations confirm the occurrence of constructive and destructive interference in the para- and meta-OPV3 molecules respectively, which arises from the phase difference of the transmission coefficients through the molecular orbitals.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Single-molecule transport
- Non-equilibrium Green’s functions
- Break junctions
- Quantum interference
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- art (ämneskategori)
- ref (ämneskategori)
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