Transport of correlated electrons through disordered chains: A perspective on entanglement, conductance, and disorder averaging
(2014) In Physical Review B (Condensed Matter and Materials Physics) 90(20).- Abstract
- We investigate electron transport in disordered Hubbard chains contacted to macroscopic leads, via the nonequilibrium Green's function technique. We observe a crossover of currents and conductances at finite bias which depends on the relative strength of disorder and interactions. We provide a proof that the coherent potential approximation, a widely used method for treating disorder averages, fulfills particle conservation at finite bias with or without electron correlations. Finally, our results hint that the observed trends in conductance due to interactions and disorder also appear as signatures in the single-site entanglement entropy.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4982978
- author
- Karlsson, Daniel LU and Verdozzi, Claudio LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 90
- issue
- 20
- article number
- 201109
- publisher
- American Physical Society
- external identifiers
-
- wos:000345247100001
- scopus:84911374147
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.90.201109
- language
- English
- LU publication?
- yes
- id
- 0f565fca-ed58-48a3-ba47-7ada41dc865c (old id 4982978)
- date added to LUP
- 2016-04-01 13:52:32
- date last changed
- 2022-02-04 17:50:39
@article{0f565fca-ed58-48a3-ba47-7ada41dc865c, abstract = {{We investigate electron transport in disordered Hubbard chains contacted to macroscopic leads, via the nonequilibrium Green's function technique. We observe a crossover of currents and conductances at finite bias which depends on the relative strength of disorder and interactions. We provide a proof that the coherent potential approximation, a widely used method for treating disorder averages, fulfills particle conservation at finite bias with or without electron correlations. Finally, our results hint that the observed trends in conductance due to interactions and disorder also appear as signatures in the single-site entanglement entropy.}}, author = {{Karlsson, Daniel and Verdozzi, Claudio}}, issn = {{1098-0121}}, language = {{eng}}, number = {{20}}, publisher = {{American Physical Society}}, series = {{Physical Review B (Condensed Matter and Materials Physics)}}, title = {{Transport of correlated electrons through disordered chains: A perspective on entanglement, conductance, and disorder averaging}}, url = {{http://dx.doi.org/10.1103/PhysRevB.90.201109}}, doi = {{10.1103/PhysRevB.90.201109}}, volume = {{90}}, year = {{2014}}, }