Creator | Title | Description | Subject | Date | ||
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1 |
![]() | Mattis, Daniel C. | Electron states in random alloys with short-range order | We present an accurate and economical iterative method of calculating the energy levels of a disordered or partly ordered random alloy. Results presented for one- and three-dimensional simple cubic lattices compare favorably with exact calculations. We also present the systematic effects of partia... | Random alloys; Density of state | 1977-04 |
2 |
![]() | Mattis, Daniel C. | Ratio 2Δ0/kTc in superconductivity | In high-temperature superconductors, values of the ratio R-2Δ0/kTc have been reported in the range 2-10, whereas low-temperature superconductors rarely deviate by as much as 50% from the BCS prediction R =3.54. Could this variability relate to the density of states near the Fermi surface? Our calcu... | Density of state; Superconductors | 1991-12 |
3 |
![]() | Mattis, Daniel C. | Second-order phase transition in a model random alloy | We investigate the existence and stability of long-range order in a simple model of a binary alloy. We find that for electron concentrations in the vicinity of one per atom, in bipartite lattices, long-range order of the atoms exists at low temperatures, and we find that the system undergoes a secon... | Phase transition; Random alloys; Quasiparticles; Density of state | 1973-03 |
4 |
![]() | Mattis, Daniel C. | Short-range versus long-range order in a model binary alloy | We calculate the free energy of a linear binary metallic alloy using an exact transfer-matrix formalism. We obtain for the first time the electronic band structure when there is nonvanishing short-range order and calculate the temperature dependence of the short-range order parameter. Following Foo... | Binary alloys; Density of state; Free energy | 1971-07 |