Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Enss, T."'
Autor:
Luciuk, C., Smale, S., Böttcher, F., Sharum, H., Olsen, B. A., Trotzky, S., Enss, T., Thywissen, J. H.
Publikováno v:
Phys. Rev. Lett. 118, 130405 (2017)
We measure the transport properties of two-dimensional ultracold Fermi gases during transverse demagnetization in a magnetic field gradient. Using a phase-coherent spin-echo sequence, we are able to distinguish bare spin diffusion from the Leggett-Ri
Externí odkaz:
http://arxiv.org/abs/1612.00815
Publikováno v:
Phys. Rev. B 95, 045121 (2017)
We investigate the phase transition between an ergodic and a many-body localized phase in infinite anisotropic spin-$1/2$ Heisenberg chains with binary disorder. Starting from the N\'eel state, we analyze the decay of antiferromagnetic order $m_s(t)$
Externí odkaz:
http://arxiv.org/abs/1608.05733
Autor:
Valtolina, G., Scazza, F., Amico, A., Burchianti, A., Recati, A., Enss, T., Inguscio, M., Zaccanti, M., Roati, G.
Publikováno v:
Nature Physics 13, 704-709 (2017)
Ferromagnetism is a manifestation of strong repulsive interactions between itinerant fermions in condensed matter. Whether short-ranged repulsion alone is sufficient to stabilize ferromagnetic correlations in the absence of other effects, like peculi
Externí odkaz:
http://arxiv.org/abs/1605.07850
Autor:
Boettcher, I., Bayha, L., Kedar, D., Murthy, P. A., Neidig, M., Ries, M. G., Wenz, A. N., Zürn, G., Jochim, S., Enss, T.
Publikováno v:
Phys. Rev. Lett. 116, 045303 (2016)
We report the experimental measurement of the equation of state of a two-dimensional Fermi gas with attractive s-wave interactions throughout the crossover from a weakly coupled Fermi gas to a Bose gas of tightly bound dimers as the interaction stren
Externí odkaz:
http://arxiv.org/abs/1509.03610
Autor:
Trotzky, S., Beattie, S., Luciuk, C., Smale, S., Bardon, A. B., Enss, T., Taylor, E., Zhang, S., Thywissen, J. H.
Publikováno v:
Phys. Rev. Lett. 114, 015301 (2015)
We observe that the diffusive spin current in a strongly interacting degenerate Fermi gas of $^{40}$K precesses about the local magnetization. As predicted by Leggett and Rice, precession is observed both in the Ramsey phase of a spin-echo sequence,
Externí odkaz:
http://arxiv.org/abs/1410.8517
Publikováno v:
Phys. Rev. Lett. 113, 217201 (2014)
We propose to observe many-body localization in cold atomic gases by realizing a Bose-Hubbard chain with binary disorder and studying its non-equilibrium dynamics. In particular, we show that measuring the difference in occupation between even and od
Externí odkaz:
http://arxiv.org/abs/1407.4251
We discuss how Raman spectra of high temperature superconducting cuprates are affected by nearly-critical spin and charge collective modes, which are coupled to charge carriers near a stripe quantum critical point. We find that specific fingerprints
Externí odkaz:
http://arxiv.org/abs/0903.2588
Akademický článek
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We discuss how Raman spectra are affected by nearly-critical spin and charge collective modes, which are coupled to charge carriers near a stripe quantum critical point. We show that specific fingerprints of nearly-critical collective modes can indee
Externí odkaz:
http://arxiv.org/abs/0805.4291
We calculate the optical and Raman response within a phenomenological model of fermion quasiparticles coupled to nearly critical collective modes. We find that, whereas critical scaling properties might be masked in optical spectra due to charge cons
Externí odkaz:
http://arxiv.org/abs/0803.1935