Journal articles
Asymmetry induces long-lasting energy current transients inside molecular loop circuits
Abstract : Energy transport and conversion at nanoscale have become an important topic of fundamental and applied research, in particular for conceiving groundbreaking solutions in energy-aware digital electronics and energy production. In this work, we propose a formal framework to address time-dependent energy transport inside quantum networks. The approach permits us to investigate how energy transferred to electrons by a femtosecond laser pulse is stored and released in a molecular circuit consisting of two donor-acceptor branches connected to an acceptor chain. Additionally, the two donors may be coupled, creating a loop inside the circuit. Time-resolved analysis reveals that when a difference exists between the two donor-acceptor branches, a loop current occurs and persists during relaxation, while only a small amount of current flows through the acceptor chain. A long-lasting energy flow thus emerges from the asymmetry of the molecular structure.
https://hal-amu.archives-ouvertes.fr/hal-03019045
Contributor : Fabienne Michelini <>
Submitted on : Monday, November 23, 2020 - 11:07:48 AM
Last modification on : Monday, January 18, 2021 - 11:51:29 AM
Contributor : Fabienne Michelini <>
Submitted on : Monday, November 23, 2020 - 11:07:48 AM
Last modification on : Monday, January 18, 2021 - 11:51:29 AM
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PhysRevB.100.024308.pdf
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