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19 papers · 1 filter
Interface reconstruction in V-oxide heterostructures determined by x-ray absorption spectroscopy
H. Wadati, D. G. Hawthorn, J. Geck +7
We present an x-ray absorption study of the dependence of the V oxidation state on the thickness of LaVO (LVO) and capping LaAlO (LAO) layers in the multilayer structure of…
Valence Bond and von Neumann Entanglement Entropy in Heisenberg Ladders
Ann B. Kallin, Ivan Gonzalez, Matthew B. Hastings +1
We present a direct comparison of the recently-proposed valence bond entanglement entropy and the von Neumann entanglement entropy on spin 1/2 Heisenberg systems using quantum Mont…
Low energy theory of the t-t'-t''-U Hubbard Model at half-filling: interaction strengths in cuprate superconductors and an effective spin-only description of La_2CuO_4
J. -Y. P. Delannoy, M. J. P. Gingras, P. C. W. Holdsworth +1
Spin-only descriptions of the half-filled one-band Hubbard model are relevant for a wide range of Mott insulators. In addition to the usual Heisenberg exchange, many new types of i…
Imaging bond order near non-magnetic impurities in square lattice antiferromagnets
Ribhu K. Kaul, Roger G. Melko, Max A. Metlitski +1
We study the textures of generalized "charge densities" (scalar objects invariant under time reversal), in the vicinity of non-magnetic impurities in square-lattice quantum anti-fe…
Effect of strong correlations on the high energy anomaly in hole- and electron-doped high-Tc superconductors
B. Moritz, F. Schmitt, W. Meevasana +8
Recently, angle-resolved photoemission spectroscopy (ARPES) has been used to highlight an anomalously large band renormalization at high binding energies in cuprate superconductors…
Large-N estimates of universal amplitudes of the CP^{N-1} theory and comparison with the JQ model
Ribhu K. Kaul, Roger Melko
We present computations of certain finite-size scaling functions and universal amplitude ratios in the large-N limit of the CP^{N-1} field theory. We pay particular attention to th…