Zobrazeno 1 - 10
of 278
pro vyhledávání: '"Berciu, M."'
Autor:
Sous, J., Zhang, C., Berciu, M., Reichman, D. R., Svistunov, B. V., Prokof'ev, N. V., Millis, A. J.
Publikováno v:
Phys. Rev. B 108, L220502 (2023)
Employing unbiased sign-problem-free quantum Monte Carlo, we investigate the effects of long-range Coulomb forces on BEC of bipolarons using a model of bond phonon-modulated electron hopping. In absence of long-range repulsion, this model was recentl
Externí odkaz:
http://arxiv.org/abs/2210.14236
Autor:
Zhang, C., Sous, J., Reichman, D. R., Berciu, M., Millis, A. J., Prokof'ev, N. V., Svistunov, B. V.
Publikováno v:
Phys. Rev. X 13, 011010 (2023)
Electron-lattice interactions play a prominent role in quantum materials, making a deeper understanding of direct routes to phonon-mediated high-transition-temperature ($T_{\mathrm{c}}$) superconductivity desirable. However, it has been known for dec
Externí odkaz:
http://arxiv.org/abs/2203.07380
Autor:
Schwarz, L., Fauseweh, B., Tsuji, N., Cheng, N., Bittner, N., Krull, H., Berciu, M., Uhrig, G. S., Schnyder, A. P., Kaiser, S., Manske, D.
Publikováno v:
Nat. Commun. 11, 287 (2020)
Recent findings of new Higgs modes in unconventional superconductors require a classification and characterization of the modes allowed by nontrivial gap symmetry. Here we develop a theory for a tailored nonequilibrium quantum quench to excite all po
Externí odkaz:
http://arxiv.org/abs/1712.07989
Publikováno v:
Sci. Rep. 7, 1169 (2017)
We study two identical fermions, or two hard-core bosons, in an infinite chain and coupled to phonons by interactions that modulate their hopping as described by the Peierls/Su-Schrieffer-Heeger (SSH) model. We show that exchange of phonons generates
Externí odkaz:
http://arxiv.org/abs/1703.01696
Akademický článek
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Autor:
Adolphs, C. P. J., Berciu, M.
Publikováno v:
Europhysics Letters 102 (2013) 47003
Using the momentum average approximation we study the importance of adding higher-than-linear terms in the electron-phonon coupling on the properties of single polarons described by a generalized Holstein model. For medium and strong linear coupling,
Externí odkaz:
http://arxiv.org/abs/1302.3843
Although we seriously disagree with many of the points raised in the comment by Edmonds et al., we feel that it is valuable and timely, since comparison of this comment and our paper serves to underscore an important property of the ferromagnetic sem
Externí odkaz:
http://arxiv.org/abs/1211.4051
Autor:
Berciu, M., Chakarvorty, R., Zhou, Y. Y., Alam, M. T., Traudt, K., Jakiela, R., Barcz, A., Wojtowicz, T., Liu, X., Furdyna, J. K., Dobrowolska, M.
Publikováno v:
Phys. Rev. Lett. 102, 247202 (2009)
We present a unified interpretation of experimentally observed magnetic circular dichroism (MCD) in the ferromagnetic semiconductor (Ga,Mn)As, based on theoretical arguments, which demonstrates that MCD in this material arises primarily from a differ
Externí odkaz:
http://arxiv.org/abs/1203.1853
Autor:
Dobrowolska, M., Tivakornsasithorn, K., Liu, X., Furdyna, J. K., Berciu, M., Yu, K. M., Walukiewicz, W.
The ferromagnetic semiconductor (Ga,Mn)As has emerged as the most studied material for prototype applications in semiconductor spintronics. Because ferromagnetism in (Ga,Mn)As is hole-mediated, the nature of the hole states has direct and crucial bea
Externí odkaz:
http://arxiv.org/abs/1203.1852
Publikováno v:
Phys. Rev. B 84, 085126 (2011)
We simulate spectral functions for electron-phonon coupling in a filled band system - far from the asymptotic limit often assumed where the phonon energy is very small compared to the Fermi energy in a parabolic band and the Migdal theorem predicting
Externí odkaz:
http://arxiv.org/abs/1102.3716