Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Dionisios Margetis"'
Autor:
Tobias Stauber, Martin Wackerl, Paul Wenk, Dionisios Margetis, José González, Guillermo Gómez-Santos, John Schliemann
Publikováno v:
Small Science, Vol 3, Iss 6, Pp n/a-n/a (2023)
The full optical response of twisted bilayer graphene at the neutrality point close to the magic angle within the continuum model (CM) is discussed. First, three different channels consistent with the underlying D 3 symmetry are identified, yielding
Externí odkaz:
https://doaj.org/article/d3d8456b838545f6adf93d582bcbd110
Publikováno v:
Quarterly of Applied Mathematics. 81:87-126
We study a physically motivated model for a trapped dilute gas of Bosons with repulsive pairwise atomic interactions at zero temperature. Our goal is to describe aspects of the excited many-body quantum states of this system by accounting for the sca
Publikováno v:
Alexander B. Watson
We describe the low-temperature optical conductivity as a function of frequency for a quantum-mechanical system of electrons that hop along a polymer chain. To this end, we invoke the Su-Schrieffer-Heeger \emph{tight-binding} Hamiltonian for non-inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02e325b1888adbf88cccb5334d78237c
http://arxiv.org/abs/2209.13068
http://arxiv.org/abs/2209.13068
Autor:
Tobias Stauber, Martin Wackerl, Paul Wenk, Dionisios Margetis, José González, Guillermo Gómez-Santos, John Schliemann
We discuss the full optical response of twisted bilayer graphene at the neutrality point close to the magic angle within the continuum model (CM). Firstly, we identify three different channels consistent with the underlying $D_3$ symmetry, yielding t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ebf65b18a5a4860164dbe56e5940956
http://arxiv.org/abs/2209.00958
http://arxiv.org/abs/2209.00958
Autor:
Ian Johnson, Dionisios Margetis
Publikováno v:
Physical review. E. 105(3-1)
Below the roughening transition, crystal surfaces exhibit nanoscale line defects, steps, that move by exchanging atoms with their environment. In homoepitaxy, we analytically show how the motion of a step train in vacuum under strong desorption can b
Publikováno v:
Physical Review B. 104
Non-reciprocal plasmons in current-driven, isotropic, and homogenous graphene with proximal metallic gates is theoretically explored. Nearby metallic gates screen the Coulomb interactions, leading to linearly dispersive acoustic plasmons residing clo
Autor:
Dionisios Margetis, Tobias Stauber
Publikováno v:
Physical Review B. 104
We analytically describe the plasmonic edge modes for an interface that involves the twisted bilayer graphene (TBG) or other similar Moire van der Waals heterostructure. For this purpose, we employ a spatially homogeneous, isotropic and frequency-dep
We describe the structure of the time-harmonic electromagnetic field of a vertical Hertzian electric dipole source radiating over an infinite, translation invariant two-dimensional electron system. Our model for the electron flow takes into account t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a110697c22d9455ea74a889dcf6ff767
http://arxiv.org/abs/2008.00488
http://arxiv.org/abs/2008.00488
We study optical coefficients that characterize wave propagation through layered structures called plasmonic crystals. These consist of a finite number of stacked metallic sheets embedded in dielectric hosts with a subwavelength spacing. By adjustmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::322abcb817b42e4970b56f68acdf9d84
Publikováno v:
Physical Review E. 100
We study analytically and numerically aspects of the dynamics of slope selection for one-dimensional models describing the motion of line defects, steps, in homoepitaxial crystal growth. The kinetic processes include diffusion of adsorbed atoms (adat