Optically driven Mott-Hubbard systems out of thermodynamic equilibrium

被引：11

作者：

Lubatsch, Andreas ^{[1
]}

Kroha, Johann ^{[1
]}

机构：

[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

来源：

ANNALEN DER PHYSIK | 2009年 / 18卷 / 12期

关键词：

Correlated electrons; non-equilibrium; Floquet expansion; DMFT; NARROW ENERGY BANDS; ELECTRON CORRELATIONS; INFINITE DIMENSIONS; TRANSITION; MODEL; NONLINEARITY;

D O I：

10.1002/andp.200910386

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the Hubbard model at half filling, driven by an external, stationary laser field. This stationary, but periodic in time, electromagnetic field couples to the charge current, i.e. it induces an extra contribution to the hopping amplitude in the Hubbard Hamiltonian (photo-induced hopping). We generalize the dynamical mean-field theory (DMFT) for nonequilibrium with periodic-in-time external fields, using a Floquet mode representation and the Keldysh formalism. We calculate the non-equilibrium electron distribution function, the density of states and the optical DC conductivity in the presence of the external laser field for laser frequencies above and below the Mott-Hubbard gap. The results demonstrate that the system exhibits an insulator-metal transition as the frequency of the external field is increased and exceeds the Mott-Hubbard gap. This corresponds to photo-induced excitations into the upper Hubbard band. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：863 / 867

页数：5

共 50 条

[1] A thermodynamic description of the Mott-Hubbard transition
Sunko, DK
Barisic, S
EUROPHYSICS LETTERS, 1996, 36 (08): : 607 - 612
[2] OPTICAL CONDUCTIVITY IN MOTT-HUBBARD SYSTEMS
ROZENBERG, MJ
KOTLIAR, G
KAJUETER, H
THOMAS, GA
RAPKINE, DH
HONIG, JM
METCALF, P
PHYSICAL REVIEW LETTERS, 1995, 75 (01) : 105 - 108
[3] Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material
Moreno-Mencia, David
Ramos-Alvarez, Alberto
Vidas, Luciana
Koohpayeh, Seyed M.
Wall, Simon
NATURE COMMUNICATIONS, 2019, 10 (1)
[4] Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material
Lantz, G.
Mansart, B.
Grieger, D.
Boschetto, D.
Nilforoushan, N.
Papalazarou, E.
Moisan, N.
Perfetti, L.
Jacques, V. L. R.
Le Bolloc'h, D.
Laulhe, C.
Ravy, S.
Rueff, J. -P.
Glover, T. E.
Hertlein, M. P.
Hussain, Z.
Song, S.
Chollet, M.
Fabrizio, M.
Marsi, M.
NATURE COMMUNICATIONS, 2017, 8
[5] Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material
David Moreno-Mencía
Alberto Ramos-Álvarez
Luciana Vidas
Seyed M. Koohpayeh
Simon Wall
Nature Communications, 10
[6] RAMAN-SCATTERING IN MOTT-HUBBARD SYSTEMS
SHASTRY, BS
SHRAIMAN, BI
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1991, 5 (1-2): : 365 - 388
[7] Mott-Hubbard insulators for systems with orbital degeneracy
Gunnarsson, O
Koch, E
Martin, RM
PHYSICAL REVIEW B, 1997, 56 (03): : 1146 - 1152
[8] Reply to: Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material
D. Boschetto
M. Weis
J. Zhang
J. Caillaux
N. Nilforoushan
G. Lantz
B. Mansart
E. Papalazarou
N. Moisan
D. Grieger
L. Perfetti
V. L. R. Jacques
D. Le Bolloc’h
C. Laulhé
S. Ravy
J.-P. Rueff
T. E. Glover
M. P. Hertlein
Z. Hussain
S. Song
M. Chollet
M. Fabrizio
M. Marsi
M. Zaghrioui
Nature Communications, 10
[9] Reply to: Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material
Boschetto, D.
Weis, M.
Zhang, J.
Caillaux, J.
Nilforoushan, N.
Lantz, G.
Mansart, B.
Papalazarou, E.
Moisan, N.
Grieger, D.
Perfetti, L.
Jacques, V. L. R.
Le Bolloc'h, D.
Laulhe, C.
Ravy, S.
Rueff, J. -P.
Glover, T. E.
Hertlein, M. P.
Hussain, Z.
Song, S.
Chollet, M.
Fabrizio, M.
Marsi, M.
Zaghrioui, M.
NATURE COMMUNICATIONS, 2019, 10 (1)
[10] Higher-harmonic generation in the driven Mott-Hubbard model
Queisser, Friedemann
Schuetzhold, Ralf
PHYSICAL REVIEW B, 2024, 109 (20)

← 1 2 3 4 5 →