Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Tchavdar N. Todorov"'
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 6, Iss 1, Pp 2140-2147 (2015)
Long metallic nanowires combine crucial factors for nonconservative current-driven atomic motion. These systems have degenerate vibrational frequencies, clustered about a Kohn anomaly in the dispersion relation, that can couple under current to form
Externí odkaz:
https://doaj.org/article/bc4cb3e7b7bb436696fd37bfb7d2b7ee
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 2, Iss 1, Pp 727-733 (2011)
We give a physical interpretation of the recently demonstrated nonconservative nature of interatomic forces in current-carrying nanostructures. We start from the analytical expression for the curl of these forces, and evaluate it for a point defect i
Externí odkaz:
https://doaj.org/article/456bb8844ec848e2975c4296895a5298
Publikováno v:
The Journal of Physical Chemistry Letters. 13:11601-11609
Cooperative optical effects provide a pathway to both the amplification (superradiance) and the suppression (subradiance) of photon emission from electronically excited states. These captivating phenomena offer a rich variety of possibilities for pho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c5c4127f8b2e4f8ca22133e8ebbf375
https://doi.org/10.1021/acs.jpclett.2c02795
https://doi.org/10.1021/acs.jpclett.2c02795
Autor:
Carlos M. Bustamante, Esteban D. Gadea, Tchavdar N. Todorov, Andrew Horsfield, Lorenzo Stella, Damian A. Scherlis
Publikováno v:
The Journal of Chemical Physics. 158:144104
Real time modeling of fluorescence with vibronic resolution entails the representation of the light–matter interaction coupled to a quantum-mechanical description of the phonons and is therefore a challenging problem. In this work, taking advantage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83adb20218747621cff565fdfa799077
https://doi.org/10.1063/5.0142094
https://doi.org/10.1063/5.0142094
Publikováno v:
Gadea, E D, Bustamante, C M, Todorov, T N & Scherlis, D A 2022, ' Radiative thermalization in semiclassical simulations of light-matter interaction ', Physical Review A (Atomic, Molecular, and Optical Physics), vol. 105, 042201 . https://doi.org/10.1103/PhysRevA.105.042201
Prediction of the equilibrium populations in quantum dynamics simulations of molecules exposed to black-body radiation has proved challenging for semiclassical treatments, with the usual Ehren- fest and Maxwell-Bloch methods exhibiting serious failur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6dff37bac02fa0ece372467900bf6d5
https://pure.qub.ac.uk/en/publications/fd8cb309-a8ed-4fe3-b129-554b5f42d84a
https://pure.qub.ac.uk/en/publications/fd8cb309-a8ed-4fe3-b129-554b5f42d84a
Autor:
A. P. Sutton, Tchavdar N. Todorov
Publikováno v:
Sutton, A P & Todorov, T N 2021, ' Theory of electroplasticity based on electromagnetic induction ', Physical Review Materials . https://doi.org/10.1103/PhysRevMaterials.5.113605
In the 1960s, it was discovered in the former Soviet Union that short pulses of intense electric currents through metallic wires brought about temporary drops in the flow stress of the metal as it is deformed plastically. This became known as the ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb70f12fbde5a07997702466433e3add
https://pure.qub.ac.uk/en/publications/theory-of-electroplasticity-based-on-electromagnetic-induction(ec627778-c6f9-41b0-842a-63c1a4cba1a8).html
https://pure.qub.ac.uk/en/publications/theory-of-electroplasticity-based-on-electromagnetic-induction(ec627778-c6f9-41b0-842a-63c1a4cba1a8).html
Autor:
Andrew P. Horsfield, Esteban D. Gadea, Tchavdar N. Todorov, Carlos M Bustamante, Damián A. Scherlis, Mariano C. González Lebrero
Publikováno v:
Bustamante, C, Gadea, E, Horsfield, A P, Todorov, T, Gonzalez Lebrero, M & Scherlis, D A 2021, ' Dissipative equation of motion for electromagnetic radiation in quantum dynamics ', Physical Review Letters . https://doi.org/10.1103/PhysRevLett.126.087401
Physical Review Letters
Physical Review Letters
The dynamical description of the radiative decay of an electronically excited state in realistic many-particle systems is an unresolved challenge. In the present investigation electromagnetic radiation of the charge density is approximated as the pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98468d80e5721fe28f7edbae6369e60d
https://pure.qub.ac.uk/en/publications/dissipative-equation-of-motion-for-electromagnetic-radiation-in-quantum-dynamics(fc457c83-f824-4e97-9894-919043dea739).html
https://pure.qub.ac.uk/en/publications/dissipative-equation-of-motion-for-electromagnetic-radiation-in-quantum-dynamics(fc457c83-f824-4e97-9894-919043dea739).html
Autor:
Piotr Chudzinski, Pablo Aguado-Puente, Jorge Kohanoff, Javier F. Troncoso, Myrta Grüning, Tchavdar N. Todorov
Publikováno v:
Fernandez Troncoso, J, Chudzinski, P, Todorov, T, Aguado Puente, P, Grüning, M & Kohanoff, J 2021, ' Thermal conductivity of porous polycrystalline PbTe ', Physical Review Materials, vol. 5, no. 1, 014604 . https://doi.org/10.1103/PhysRevMaterials.5.014604
PbTe is a leading thermoelectric material at intermediate temperatures, largely thanks to its low lattice thermal conductivity. However, its efficiency is too low to compete with other forms of power generation. This efficiency can be effectively enh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5576970cd4b0dc301263d9ca076a1c1
https://doi.org/10.1103/physrevmaterials.5.014604
https://doi.org/10.1103/physrevmaterials.5.014604
Autor:
Cristián G. Sánchez, Carlos M Bustamante, Damián A. Scherlis, Tchavdar N. Todorov, Andrew P. Horsfield
Publikováno v:
Bustamante, C M, Todorov, T N, Sánchez, C G, Horsfield, A & Scherlis, D A 2020, ' A simple approximation to the electron-phonon interaction in population dynamics ', Journal of Chemical Physics, vol. 153, pp. 234108-1-234108-10 . https://doi.org/10.1063/5.0031766
The Journal of Chemical Physics
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
The Journal of Chemical Physics
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
The modeling of coupled electron–ion dynamics including a quantum description of the nuclear degrees of freedom has remained a costly and technically difficult practice. The kinetic model for electron–phonon interaction provides an efficient appr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c9ea7bb9bab9872a554bd6d15344151
http://hdl.handle.net/10044/1/85993
http://hdl.handle.net/10044/1/85993
Publikováno v:
McCooey, C, Todorov, T & Dundas, D 2020, ' Curl maps in nanowires ', Physical Review B, vol. 102, 115403, pp. 115403-1-115403-11 . https://doi.org/10.1103/PhysRevB.102.115403
Nonconservative current-induced forces (NCIFs) in nanowires have attracted attention both as a failure mechanism and as a driver for atomic-scale motors. Here we investigate the view that the nonconservative character of the electron wind force is an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9650ddfc7faa300aaa566fe0e2f9d8d7
https://doi.org/10.1103/physrevb.102.115403
https://doi.org/10.1103/physrevb.102.115403