Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Montambaux, Gilles"'
Publikováno v:
Phys. Rev. B 101, 045131 (2020)
The energy spectra for the tight-binding models on the Lieb and kagom\'e lattices both exhibit a flat band. We present a model which continuously interpolates between these two limits. The flat band located in the middle of the three-band spectrum fo
Externí odkaz:
http://arxiv.org/abs/1906.12002
Autor:
Montambaux, Gilles
Publikováno v:
C.R. Physique, 19 (2018) pp.285-305
After the discovery of graphene and its many fascinating properties, there has been a growing interest for the study of "artificial graphenes". These are totally different and novel systems which bear exciting similarities with graphene. Among them a
Externí odkaz:
http://arxiv.org/abs/1810.07505
Publikováno v:
Phys. Rev. Lett. 121, 256402 (2018)
The merging or emergence of a pair of Dirac points may be classified according to whether the winding numbers which characterize them are opposite ($+-$ scenario) or identical ($++$ scenario). From the touching point between two parabolic bands (one
Externí odkaz:
http://arxiv.org/abs/1804.00781
Autor:
Montambaux, Gilles
Publikováno v:
Found Phys (2018) 48: 395
We reconsider the thermodynamic derivation by L. Boltzmann of the Stefan law and we generalize it for various different physical systems {\it whose chemical potential vanishes}. Being only based on classical arguments, therefore independent of the qu
Externí odkaz:
http://arxiv.org/abs/1610.05940
Autor:
Milićević, Marijana, Ozawa, Tomoki, Montambaux, Gilles, Carusotto, Iacopo, Galopin, Elisabeth, Lemaître, Aristide, Gratiet, Luc Le, Sagnes, Isabelle, Bloch, Jacqueline, Amo, Alberto
Publikováno v:
Phys. Rev. Lett. 118, 107403 (2017)
We experimentally reveal the emergence of edge states in a photonic lattice with orbital bands. We use a two-dimensional honeycomb lattice of coupled micropillars whose bulk spectrum shows four gapless bands arising from the coupling of $p$-like phot
Externí odkaz:
http://arxiv.org/abs/1609.06485
Publikováno v:
Phys. Rev. B 94, 134423 (2016)
The orbital magnetic susceptibility of an electron gas in a periodic potential depends not only on the zero field energy spectrum but also on the geometric structure of cell-periodic Bloch states which encodes interband effects. In addition to the Be
Externí odkaz:
http://arxiv.org/abs/1605.01258
Publikováno v:
Phys. Rev. B 94, 125140(2016)
We present a theory of quantum oscillations in insulators that are particle-hole symmetric and non-topological but with arbitrary band dispersion, at both zero and non-zero temperature. At temperatures $T$ less than or comparable to the gap, the depe
Externí odkaz:
http://arxiv.org/abs/1604.01688
Publikováno v:
Phys. Rev. A 92, 063627 (2015)
Inspired by recent experiments with cold atoms in optical lattices, we consider a St\"uckelberg interferometer for a particle performing Bloch oscillations in a tight-binding model on the honeycomb lattice. The interferometer is made of two avoided c
Externí odkaz:
http://arxiv.org/abs/1510.03889
Autor:
Texier, Christophe, Montambaux, Gilles
Publikováno v:
Physica E 82, 272-285 (2016)
We consider the electronic transport in multi-terminal mesoscopic networks of weakly disordered metallic wires. After a brief description of the classical transport, we analyze the weak localisation (WL) correction to the four-terminal resistances, w
Externí odkaz:
http://arxiv.org/abs/1506.08224
Publikováno v:
Phys. Rev. A 91, 042119 (2015)
We study the time evolution of a two-dimensional quantum particle exhibiting an energy spectrum, made of two bands, with two Dirac cones, as e.g. in the band structure of a honeycomb lattice. A force is applied such that the particle experiences two
Externí odkaz:
http://arxiv.org/abs/1412.5880