Thermodynamics versus Local Density Fluctuations in the Metal-Mott-Insulator Crossover.
Thermodynamics versus Local Density Fluctuations in the Metal-Mott-Insulator Crossover.
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金属-莫特-绝缘体交叉中的热力学与局部密度波动
DOI:
10.1103/physrevlett.117.135301
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发表时间:
--
影响因子:
8.6
通讯作者:
M. Köhl
中科院分区:
文献类型:
--
作者:
J. H. Drewes;E. Cocchi;L. A. Miller;C. F. Chan;D. Pertot;F. Brennecke;M. Köhl
The crossover between a metal and a Mott insulator leads to a localization of fermions from delocalized Bloch states to localized states. We experimentally study this crossover using fermionic atoms in an optical lattice by measuring thermodynamic and local (on-site) density correlations. In the metallic phase at incommensurable filling we observe the violation of the local fluctuation-dissipation theorem indicating that the thermodynamics of the system cannot be characterized by local observables alone. In contrast, in the Mott insulator we observe the convergence of local and thermodynamic fluctuations indicating the absence of long-range density-density correlations.
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DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
E. Duchon;Y. Kato;N. Trivedi
通讯作者:
N. Trivedi
影响因子:
8.6
作者:
Qi Zhou;T. Ho
通讯作者:
T. Ho
影响因子:
2.9
作者:
E. Khatami;M. Rigol
通讯作者:
M. Rigol
影响因子:
8.6
作者:
B. Fröhlich;M. Feld;Enrico Vogt;M. Koschorreck;W. Zwerger;M. Köhl
通讯作者:
B. Fröhlich;M. Feld;Enrico Vogt;M. Koschorreck;W. Zwerger;M. Köhl
影响因子:
2.9
作者:
Klawunn, M.;Recati, A.;Stringari, S.
通讯作者:
Stringari, S.