Zobrazeno 1 - 10
of 2 236
pro vyhledávání: '"Koenig, E."'
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 55 034001 (2022)
Ultracold temperatures in dilute quantum gases opened the way to an exquisite control of matter at the quantum level. Here we focus on the control of ultracold atomic collisions using a laser to engineer their interactions at large interatomic distan
Externí odkaz:
http://arxiv.org/abs/2110.15240
Publikováno v:
Phys. Rev. B 104, 100507 (2021)
We consider the problem of finite resistance $R$ in superconducting films with geometry of a strip of width $W$ near zero temperature. The resistance is generated by vortex configurations of the phase field. In the first type of process, quantum phas
Externí odkaz:
http://arxiv.org/abs/2106.05980
Publikováno v:
Phys. Rev. B 102, 104514 (2020)
The discovery of alternating superconducting and insulating ground-states in magic angle graphene has suggested an intriguing analogy with cuprate high-$T_c$ materials. Here we argue that the network states of small angle twisted bilayer graphene (TB
Externí odkaz:
http://arxiv.org/abs/2006.10684
Publikováno v:
Phys. Rev. Research 2, 013252 (2020)
We theoretically study dilute superfluidity of spin-1 bosons with antiferromagnetic interactions and synthetic spin-orbit coupling (SOC) in a one-dimensional lattice. Employing a combination of density matrix renormalization group and quantum field t
Externí odkaz:
http://arxiv.org/abs/1912.06142
Publikováno v:
Phys. Rev. B 101, 235121 (2020)
We construct and solve a two-dimensional, chirally symmetric model of Dirac cones subjected to a quasiperiodic modulation. In real space, this is realized with a quasiperiodic hopping term. This hopping model, as we show, at the Dirac node energy has
Externí odkaz:
http://arxiv.org/abs/1908.09837
Publikováno v:
Phys. Rev. B 99, 155404 (2019)
We study the ac Hall response induced by passage of dc transport current in two- and three-dimensional metals with gyrotropic point groups -- the gyrotropic Hall effect -- and consider the phenomenon of current-induced optical activity in noncentrosy
Externí odkaz:
http://arxiv.org/abs/1812.06989
Akademický článek
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Publikováno v:
npj Quantum Mater. 5, 71 (2020)
Breakthroughs in two-dimensional van der Waals heterostructures have revealed that twisting creates a moir\'e pattern that quenches the kinetic energy of electrons, allowing for exotic many-body states. We show that cold-atomic, trapped ion, and meta
Externí odkaz:
http://arxiv.org/abs/1809.04604
Autor:
Lehec, H., Zuliani, A., Maineult, W., Luc-Koenig, E., Pillet, P., Cheinet, P., Niyaz, F., Gallagher, T. F.
Publikováno v:
Phys. Rev. A 98, 062506 (2018)
New measurements of high-lying even parity $6sns\, {}^1 \! S_0$ and $6snd\,{}^{3,1}\!D_2$ levels of neutral $^{174}$Yb are presented in this paper. Spectroscopy is performed by a two-step laser excitation from the ground state $4f^{14}6s^2 \, {}^1 \!
Externí odkaz:
http://arxiv.org/abs/1805.02712
Autor:
König, E. J., Pixley, J. H.
Publikováno v:
Phys. Rev. Lett. 121, 083402 (2018)
We theoretically study an ultra-cold gas of spin-1 polar bosons in a one dimensional continuum which are subject to linear and quadratic Zeeman fields and a Raman induced spin-orbit coupling. Concentrating on the regime in which the background fields
Externí odkaz:
http://arxiv.org/abs/1802.07736