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• W2100089682 endingPage "014003" @default.
• W2100089682 startingPage "014003" @default.
• W2100089682 abstract "Motivated by recent scanning tunneling and photoemission spectroscopy measurements on self-organized gold chains on a germanium surface, we reinvestigate the local single-particle spectral properties of Luttinger liquids. In the first part we use the bosonization approach to exactly compute the local spectral function of a simplified field theoretical low-energy model and take a closer look at scaling properties as a function of the ratio of energy and temperature. Translational-invariant Luttinger liquids as well as those with an open boundary (cut chain geometry) are considered. We explicitly show that the scaling functions of both set-ups have the same analytical form. The scaling behavior suggests a variety of consistency checks which can be performed on measured data to experimentally verify Luttinger liquid behavior. In the second part we approximately compute the local spectral function of a microscopic lattice model-the extended Hubbard model-close to an open boundary using the functional renormalization group. We show that it follows the field theoretical prediction in the low-energy regime as a function of energy and temperature, and point out the importance of nonuniversal energy scales inherent to any microscopic model. The spatial dependence of this spectral function is characterized by oscillatory behavior and an envelope function which follows a power law in accordance with the field theoretical continuum model. Interestingly, for the lattice model we find a phase shift which is proportional to the two-particle interaction and not accounted for in the standard bosonization approach to Luttinger liquids with an open boundary. We briefly comment on the effects of several one-dimensional branches cutting the Fermi energy and Rashba spin-orbit interaction." @default.
• W2100089682 created "2016-06-24" @default.
• W2100089682 creator A5030201838 @default.
• W2100089682 creator A5038191049 @default.
• W2100089682 creator A5047559739 @default.
• W2100089682 date "2012-12-05" @default.
• W2100089682 modified "2023-10-17" @default.
• W2100089682 title "Local spectral properties of Luttinger liquids: scaling versus nonuniversal energy scales" @default.
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• W2100089682 doi "https://doi.org/10.1088/0953-8984/25/1/014003" @default.
• W2100089682 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23221026" @default.
• W2100089682 hasPublicationYear "2012" @default.
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