TY - JOUR
T1 - Single-molecule quantum-transport phenomena in break junctions
AU - Gehring, Pascal
AU - Thijssen, Jos
AU - van der Zant, Herre
N1 - Accepted Author Manuscript
PY - 2019
Y1 - 2019
N2 - Single-molecule junctions - devices in which a single molecule is electrically connected by two electrodes - enable the study of a broad range of quantum-transport phenomena even at room temperature. These quantum features are related to molecular orbital and spin degrees of freedom and are characterized by various energy scales that can be chemically and physically tuned: level spacings, charging energies, tunnel couplings, exchange energies, vibrational energies and Kondo correlation energies. The competition between theses different energy scales leads to a rich variety of processes, which researchers are now starting to be able to control and tune experimentally. In this Technical Review, we present the status of the molecular eclectronics field from this quantum-tranport perspective with a focus on recent experimental results obtained using break-junction devices, including scanning probe and mechanically controlled break junctions as well as electromigrated gold and graphene break junctions.
AB - Single-molecule junctions - devices in which a single molecule is electrically connected by two electrodes - enable the study of a broad range of quantum-transport phenomena even at room temperature. These quantum features are related to molecular orbital and spin degrees of freedom and are characterized by various energy scales that can be chemically and physically tuned: level spacings, charging energies, tunnel couplings, exchange energies, vibrational energies and Kondo correlation energies. The competition between theses different energy scales leads to a rich variety of processes, which researchers are now starting to be able to control and tune experimentally. In this Technical Review, we present the status of the molecular eclectronics field from this quantum-tranport perspective with a focus on recent experimental results obtained using break-junction devices, including scanning probe and mechanically controlled break junctions as well as electromigrated gold and graphene break junctions.
U2 - 10.1038/s42254-019-0055-1
DO - 10.1038/s42254-019-0055-1
M3 - Article
VL - 1
SP - 381
EP - 396
JO - Nature Reviews Physics
JF - Nature Reviews Physics
SN - 2522-5820
IS - 2019
ER -