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HEATEXMOL SIGNED

Control of current-induced heat exchange in molecular junctions by molecular scale design of the electronic properties

Total Cost €

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EC-Contrib. €

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Partnership

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Project "HEATEXMOL" data sheet

The following table provides information about the project.

Coordinator
FYZIKALNI USTAV AV CR V.V.I 

Organization address
address: NA SLOVANCE 2
city: PRAHA 8
postcode: 18221
website: www.fzu.cz

contact info
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name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Czech Republic [CZ]
 Project website http://publikace.fzu.cz/prj_pub.php
 Total cost 142˙720 €
 EC max contribution 142˙720 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2016
 Duration (year-month-day) from 2016-07-01   to  2018-06-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    FYZIKALNI USTAV AV CR V.V.I CZ (PRAHA 8) coordinator 142˙720.00

Map

 Project objective

The project will investigate the current-induced vibrational heating and cooling of molecular junctions with relatively sharp molecular resonances. These systems are interesting because, depending on the atomistic details of the metal/molecule interface and the chemical structure of the molecule, an extremely rich variety of heating/cooling dynamics under an external bias is possible. A detailed study of the connection between the electronic structure (both at equilibrium and in presence of a bias) and the inelastic processes associated to the emission and absorption of molecular vibrations represents a necessary step toward the comprehension and control of the junction heating and cooling dynamics and thus of its stability. We will study a broad range of systems where the sharp DOS features are originated by two different physical mechanisms: i) structural and chemical details of the metal/molecule interface, and ii) destructive interference in the molecule. In the first case, we will focus on the effect of electrode shape on the heating and cooling of the molecule and consider a wide range of molecule-electrode couplings. The molecules we will consider are examples of these classes of systems, namely carbenes (strong coupling to the electrodes), bypiridine (intermediate coupling), PTCDA (weak coupling). In the case of destructive interference, we will focus on conjugated linear molecules where quantum interference features originate from the coupling of side-groups to the molecular backbone. Finally the project will extend the state-of-the-art approach for the calculation of the heating and cooling dynamics by introducing self-consistency between vibrations populations and the electronic structure. For this we will make use of a series of approximations in the derivation of the equations for vibration emission and absorption rates. We expect this new approach will reveal complex dynamics in systems with sharp resonances and close to vibrational instabilities.

 Publications

year authors and title journal last update
List of publications.
2017 Giuseppe Foti, Héctor Vázquez
Adsorbate-driven cooling of carbene-based molecular junctions
published pages: 2060-2068, ISSN: 2190-4286, DOI: 10.3762/bjnano.8.206
Beilstein Journal of Nanotechnology 8 2019-06-13
2017 Giuseppe Foti, Héctor Vázquez
Interface Tuning of Current-Induced Cooling in Molecular Circuits
published pages: 1082-1088, ISSN: 1932-7447, DOI: 10.1021/acs.jpcc.6b11955
The Journal of Physical Chemistry C 121/2 2019-06-13
2017 Bruno de la Torre, Martin Švec, Giuseppe Foti, Ondřej Krejčí, Prokop Hapala, Aran Garcia-Lekue, Thomas Frederiksen, Radek Zbořil, Andres Arnau, Héctor Vázquez, Pavel Jelínek
Submolecular Resolution by Variation of the Inelastic Electron Tunneling Spectroscopy Amplitude and its Relation to the AFM/STM Signal
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.119.166001
Physical Review Letters 119/16 2019-06-13
2018 Giuseppe Foti, Héctor Vázquez
Origin of Vibrational Instabilities in Molecular Wires with Separated Electronic States
published pages: 2791-2796, ISSN: 1948-7185, DOI: 10.1021/acs.jpclett.8b00940
The Journal of Physical Chemistry Letters 2019-06-13

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