abstracts[] |
{'sha1': '3c68954e19dbd9d08689056a87da959baf19f6ed', 'content': 'We calculate steady-state properties of a strongly correlated quantum dot\nunder voltage bias by means of non-equilibrium Cluster Perturbation Theory and\nthe non-equilibrium Variational Cluster Approach, respectively. Results for the\nsteady-state current are benchmarked against data from accurate Matrix Product\nState based time evolution. We show that for low to medium interaction\nstrength, non-equilibrium Cluster Perturbation Theory already yields good\nresults, while for higher interaction strength the self-consistent feedback of\nthe non-equilibrium Variational Cluster Approach significantly enhances the\naccuracy. We report the current-voltage characteristics for different\ninteraction strengths. Furthermore we investigate the non-equilibrium local\ndensity of states of the quantum dot and illustrate that within the variational\napproach a linear splitting and broadening of the Kondo resonance is predicted\nwhich depends on interaction strength. Calculations with applied gate voltage,\naway from particle hole symmetry, reveal that the maximum current is reached at\nthe crossover from the Kondo regime to the doubly-occupied or empty quantum\ndot. Obtained stability diagrams compare very well to recent experimental data\n[Phys. Rev. B, 84, 245316 (2011)].', 'mimetype': 'text/plain', 'lang': 'en'}
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contribs[] |
{'index': 0, 'creator_id': None, 'creator': None, 'raw_name': 'Martin Nuss', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 1, 'creator_id': None, 'creator': None, 'raw_name': 'Christoph Heil', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 2, 'creator_id': None, 'creator': None, 'raw_name': 'Martin Ganahl', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 3, 'creator_id': None, 'creator': None, 'raw_name': 'Michael Knap', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 4, 'creator_id': None, 'creator': None, 'raw_name': 'Hans Gerd\n Evertz', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 5, 'creator_id': None, 'creator': None, 'raw_name': 'Enrico Arrigoni', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 6, 'creator_id': None, 'creator': None, 'raw_name': 'Wolfgang von der Linden', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
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ext_ids |
{'doi': None, 'wikidata_qid': None, 'isbn13': None, 'pmid': None, 'pmcid': None, 'core': None, 'arxiv': '1207.5641v2', 'jstor': None, 'ark': None, 'mag': None, 'doaj': None, 'dblp': None, 'oai': None, 'hdl': None}
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