Asphericity in the Fermi Surface and Fermi Energy of Na-K, Na-Rb and Na-Cs Binary Alloys |
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| Authors: | Minal HPatel AMVora PNGajjar ARJani |
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| Institution: | Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388 120, Gnjarat, India Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388 120, Gnjarat, India Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388 120, Gnjarat, India Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388 120, Gnjarat, India |
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| Abstract: | Detailed theoretical investigations into asphericity in the Fermi surface (FS) and Fermi energy (FE) ofNa1_xKx, Na1_xRbx, and Na1_xCsx binary solid solutions are carried out for the first time. The alloying behavior ofthe K, Rb, and Cs with the Na generates the Fermi surface distortion (FSD) of bce simple metals. The FS of Na-K,Na-Rb, and Na-Cs solid solution is a distorted sphere with the largest deviation along 110]. We have found that theimpact of local-field correction function on FSD is maximun at 100] point and minimum at 111] point. The exchangeand correlation effect is found to suppress the value of FE. |
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| Keywords: | asphericity in the Fermi surface Fermi energy pseudopotential exchange and correlation effects binary alloys |
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