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On Gossamer metals and insulating behaviour |
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| Authors: | G Chapline Z Nazario D I Santiago |
| Institution: | 1. Physics and Advanced Technologies Directorate , Lawrence Livermore National Laboratory , Livermore, CA 94550, USA;2. Department of Physics , Stanford University , Stanford, CA 94305, USA;3. Department of Physics , Stanford University , Stanford, CA 94305, USA;4. Gravity Probe B Relativity Mission , Stanford, CA 94305, USA |
| Abstract: | We extend the Gossamer technique recently proposed to describe superconducting ground states to metallic ground states. The Gossamer metal in a single band model will describe a metallic phase that becomes arbitrarily hard to differentiate from an insulator as one turns the Coulomb correlations up. We were motivated by the phase diagram of V2O3 and f-electron systems which have phase diagrams in which a line of first-order metal–insulator transition ends at a critical point above which the two phases are indistinguishable. This means that one can go continuously from the metal to the ‘insulator’, suggesting that they might be the same phase. |
| Keywords: | nanostructures computer modelling and simulation adsorption band-structure |