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oai:docta.ucm.es:20.500.14352/521152023-08-26T08:23:47Zcom_20.500.14352_14col_20.500.14352_15

Analytical expressions for the transport coefficients of icosahedral quasicrystals Landauro, C.V. Maciá Barber, Enrique Alfonso Solbrig, H. 538.9 Al-Cu-Fe Metal-insulator-transition Density-of-states Quasi-crystals Electronic-structure Band-structure Electrical-conductivity Anderson transition Thin-films Pd-Re Física de materiales Física del estado sólido 2211 Física del Estado Sólido ©2003 The American Physical Society. We are grateful to A. Löoser, and T. Schmidt for useful discussions. This work was supported by the Deutsche Forschungsgemeinschaft. We investigate by analytical means the electronic transport properties of approximants and quasicrystals. The spectral resistivity is modeled by Lorentz functions in agreement with realistic ab initio calculations (linear muffin-tin orbital basis, Kubo-Greenwood formula) for low-order approximants. The analytical expressions for the transport coefficients compare well with both numerical calculations and experiments. Thus, the temperature-dependent conductivity, thermopower, electronic thermal conductivity, and Lorenz number of certain approximants and quasicrystals can be consistently explained. Deutsche Forschungsgemeinschaft DFG Depto. de Física de Materiales Fac. de Ciencias Físicas TRUE pub 2023-06-20T12:39:47Z 2023-06-20T12:39:47Z 2003-05-01 journal article https://hdl.handle.net/20.500.14352/52115 1098-0121 10.1103/physrevb.67.184206 eng open access application/pdf American Physical Society