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| 001 | 276183 | ||
| 005 | 20230426083129.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevB.92.205103 |2 doi |
| 024 | 7 | _ | |a 0163-1829 |2 ISSN |
| 024 | 7 | _ | |a 0556-2805 |2 ISSN |
| 024 | 7 | _ | |a 1095-3795 |2 ISSN |
| 024 | 7 | _ | |a 1098-0121 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2015-06650 |
| 041 | _ | _ | |a English |
| 082 | _ | _ | |a 530 |
| 100 | 1 | _ | |a Jin, F. |0 P:(DE-Juel1)144355 |b 0 |u fzj |
| 245 | _ | _ | |a Finite-temperature charge transport in the one-dimensional Hubbard model |
| 260 | _ | _ | |a College Park, Md. |c 2015 |b APS |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1489839316_32583 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a We study the charge conductivity of the one-dimensional repulsive Hubbard model at finite temperature using the method of dynamical quantum typicality, focusing at half filling. This numerical approach allows us to obtain current autocorrelation functions from systems with as many as 18 sites, way beyond the range of standard exact diagonalization. Our data clearly suggest that the charge Drude weight vanishes with a power law as a function of system size. The low-frequency dependence of the conductivity is consistent with a finite dc value and thus with diffusion, despite large finite-size effects. Furthermore, we consider the mass-imbalanced Hubbard model for which the charge Drude weight decays exponentially with system size, as expected for a nonintegrable model. We analyze the conductivity and diffusion constant as a function of the mass imbalance and we observe that the conductivity of the lighter component decreases exponentially fast with the mass-imbalance ratio. While in the extreme limit of immobile heavy particles, the Falicov-Kimball model, there is an effective Anderson-localization mechanism leading to a vanishing conductivity of the lighter species, we resolve finite conductivities for an inverse mass ratio of η≳0.25. |
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| 536 | _ | _ | |a Manipulation and dynamics of quantum spin systems (jjsc09_20120501) |0 G:(DE-Juel1)jjsc09_20120501 |c jjsc09_20120501 |f Manipulation and dynamics of quantum spin systems |x 1 |
| 542 | _ | _ | |i 2015-11-02 |2 Crossref |u http://link.aps.org/licenses/aps-default-license |
| 542 | _ | _ | |i 2016-11-01 |2 Crossref |u http://link.aps.org/licenses/aps-default-accepted-manuscript-license |
| 588 | _ | _ | |a Dataset connected to CrossRef |
| 700 | 1 | _ | |a Steinigeweg, R. |0 P:(DE-HGF)0 |b 1 |e Corresponding author |
| 700 | 1 | _ | |a Heidrich-Meisner, F. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Michielsen, K. |0 P:(DE-Juel1)138295 |b 3 |u fzj |
| 700 | 1 | _ | |a De Raedt, H. |0 P:(DE-HGF)0 |b 4 |
| 773 | 1 | 8 | |a 10.1103/physrevb.92.205103 |b American Physical Society (APS) |d 2015-11-02 |n 20 |p 205103 |3 journal-article |2 Crossref |t Physical Review B |v 92 |y 2015 |x 1098-0121 |
| 773 | _ | _ | |a 10.1103/PhysRevB.92.205103 |g Vol. 92, no. 20, p. 205103 |0 PERI:(DE-600)2844160-6 |n 20 |p 205103 |t Physical review / B |v 92 |y 2015 |x 1098-0121 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/276183/files/PhysRevB.92.205103.pdf |y OpenAccess |
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| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/276183/files/PhysRevB.92.205103.pdf?subformat=pdfa |x pdfa |y OpenAccess |
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