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Model interaction potentials for real materials are generally optimized withrespect to only those experimental properties that are easily evaluated asmechanical averages (e.g., elastic constants (at T=0 K), static latticeenergies and liquid structure). For such potentials, agreement with experimentfor the non-mechanical properties, such as the melting point, is not guaranteedand such values can deviate significantly from experiment. We present a methodfor re-parameterizing any model interaction potential of a real material toadjust its melting temperature to a value that is closer to its experimentalmelting temperature. This is done without significantly affecting themechanical properties for which the potential was modeled. This method is anapplication of Gibbs-Duhem integration [D. Kofke, Mol. Phys.78, 1331 (1993)].As a test we apply the method to an embedded atom model of aluminum [J. Mei andJ.W. Davenport, Phys. Rev. B 46, 21 (1992)] for which the melting temperaturefor the thermodynamic limit is 826.4 +/- 1.3K - somewhat below the experimentalvalue of 933K. After re-parameterization, the melting temperature of themodified potential is found to be 931.5K +/- 1.5K.Comment: 9 pages, 5 figures, 4 table

Adjusting the melting point of a model system via Gibbs-Duhem integration: Application to a model of aluminum