Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Dednam, W."'
It is theoretically well established that a spin-dependent electron transmission generally appears in chiral systems, even without magnetic components, as long as a strong spin-orbit coupling is present in some of its elements. However, how this tran
Externí odkaz:
http://arxiv.org/abs/2306.17312
Autor:
Martinez-Garcia, A., de Ara, T., Pastor-Amat, L., Untiedt, C., Lombardi, E. B., Dednam, W., Sabater, C.
In the field of molecular electronics, particularly in quantum transport studies, the orientation of molecules plays a crucial role. This orientation, with respect to the electrodes, can be defined through the cavity of ring-shaped monocyclic hydroca
Externí odkaz:
http://arxiv.org/abs/2302.08389
Autor:
Dednam, W., García-Blázquez, M. A., Zotti, Linda A., Lombardi, E. B., Sabater, C., Pakdel, S., Palacios, J. J.
Publikováno v:
ACS Nano 17 (7), 6452-6465 (2023)
Spin-orbit coupling gives rise to a range of spin-charge interconversion phenomena in non-magnetic systems where certain spatial symmetries are reduced or absent. Chirality-induced spin selectivity (CISS), a term that generically refers to a spin-dep
Externí odkaz:
http://arxiv.org/abs/2211.04830
Autor:
Dednam, W., Sabater, C., Botha, A. E., Lombardi, E. B., Fernández-Rossier, J., Caturla, M. J.
Publikováno v:
Computational Materials Science, Volume 209, 111359 (2022)
The spin and lattice dynamics of a ferromagnetic nanoparticle are studied via molecular dynamics and with semi-classical spin dynamics simulations where spin and lattice degrees of freedom are coupled via a dynamic uniaxial anisotropy term. We show t
Externí odkaz:
http://arxiv.org/abs/2211.03706
Low-temperature scanning tunneling microscopy is used here to study dynamic bonding of gold atoms on surfaces under low coordination conditions. In the experiments, using an atomically-sharp gold tip, a gold adatom is deposited onto a gold surface wi
Externí odkaz:
http://arxiv.org/abs/2205.14203
Autor:
Dednam, W., Sabater, C., Calvo, M. R., Untiedt, C., Palacios, J. J., Botha, A. E., Caturla, M. J.
Publikováno v:
Phys. Rev. B 101, 165417 (2020)
Atomic-sized junctions of iron, created by controlled rupture, present unusually high values of conductance compared to other metals. This result is counter-intuitive since, at the nanoscale, body-centered cubic metals are expected to exhibit lower c
Externí odkaz:
http://arxiv.org/abs/1908.04399
Publikováno v:
In Computational Materials Science 15 June 2022 209
Publikováno v:
Phys. Rev. B 97, 075418 (2018)
We study in detail, by experimental measurements, atomistic simulations and DFT transport calculations, the process of formation and the resulting electronic properties of atomic-sized contacts made of Au, Ag and Cu. Our novel approaches to the data
Externí odkaz:
http://arxiv.org/abs/1709.09557
Publikováno v:
Phys. Rev. Lett. 120, 076802 (2018)
Our analysis of the contact formation processes undergone by Au, Ag and Cu nanojunctions, reveals that the distance at which the two closest atoms on a pair of opposing electrodes jump into contact is, on average, two times longer for Au than either
Externí odkaz:
http://arxiv.org/abs/1709.09560
Publikováno v:
J. Phys.: Conf. Ser. 574 012045
The formation and rupture of atomic-sized contacts is modelled by means of molecular dynamics simulations. Such nano-contacts are realized in scanning tunnelling microscope and mechanically controlled break junction experiments. These instruments rou
Externí odkaz:
http://arxiv.org/abs/1501.05743