Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Tolea, M."'
Publikováno v:
Phys. Rev. B 103, 125307 (2021)
Destructive quantum interference (DQI) and its effects on electron transport is studied in chemical molecules and finite physical lattices that can be described by a discrete Hamiltonian. Starting from a bipartite system whose conductance zeros are k
Externí odkaz:
http://arxiv.org/abs/2103.15082
Publikováno v:
Phys. Rev. B 101, 235318 (2020)
Within the Landauer transport formalism we demonstrate that conductance zeroes are possible in bipartite systems at half-filling when leads are contacted to different sublattice sites. In particular, we investigate the application of this theory to g
Externí odkaz:
http://arxiv.org/abs/2007.04700
Publikováno v:
Phys. Rev. B 101, 085304 (2020)
The time evolution of a quantum dot exciton in Coulomb interaction with wetting layer carriers is treated using an approach similar to the independent boson model. The role of the polaronic unitary transform is played by the scattering matrix, for wh
Externí odkaz:
http://arxiv.org/abs/1911.12016
We study the validity of Hund's first rule for the spin multiplicity in circular molecules - made of real or artificial atoms such as quantum dots - by considering a perturbative approach in the Coulomb interaction in the extended Hubbard model with
Externí odkaz:
http://arxiv.org/abs/1711.06001
Publikováno v:
Solid State Communications 257 (2017), 36
Shape memory alloys are known to memorise one -or several- temperatures at which the martensite-austenite transformation was stopped before completion in the past, the memory manifesting as specific dips in subsequent calorimetric scans. Previous stu
Externí odkaz:
http://arxiv.org/abs/1704.02443
Publikováno v:
Phys.Rev.B. 94, 165103 (2016)
We present detailed spectral calculations for small Lieb lattices having up to $N=4$ number of cells, in the regime of half-filling, an instance of particular relevance for the nano-magnetism of discrete systems such as quantum dot arrays, due to the
Externí odkaz:
http://arxiv.org/abs/1610.03099
A phenomenological 2D model, simulating the martensitic transformation, is built upon existing experimental observations that the size of the formed plates -in direct transformation- decreases as the temperature is lowered; then they transform back i
Externí odkaz:
http://arxiv.org/abs/1504.08287
Akademický článek
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Akademický článek
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Publikováno v:
Phys. Rev. B 83, 245317 (2011)
We investigate theoretically the transport properties of the side-coupled double quantum dots in connection with the experimental study of Sasaki {\it et al.} Phys.Rev.Lett.{\bf 103}, 266806 (2009). The novelty of the set-up consists in connecting th
Externí odkaz:
http://arxiv.org/abs/1101.5439