Explanation of Pressure Effect for High Temperature Superconductors Using Pressure Dependent Schrodinger Equation and String Theory
- 1 Department of Physics, University College (Turaba), Taif University, Taif, KSA
- 2 Department of Physics and Mathematics, Hantoub Faculty of Education, Algezira University, Wad Madaniin-Hantoub, Sudan
- 3 Department of Physics and Mathematics, Faculty of Education, Albutana University, Rufaa, Sudan
- 4 Department of Physics, College of Science, Majmaah University, Majmaah, KSA
- 5 Department of Physics, Faculty of Science, Sudan University of Science and Technology, Khartoum, Sudan
- 6 Department of Physics, Faculty of Science, Sudan University of Science and Technology, Khartoum, Sudan
- 7 Department of Physics, Faculty of Science & Art (Dariyah), Qassim University, Al-Mulida, KSA
- 8 Department of Physics, Faculty of Science & Art, Dariyah University, Buljurashi, KSA
Abstract
A pressure dependent Schrodinger equation is used to find the conditions that lead to su perconductivity. When no pressure is exerted, the superconductor resistance vanishes beyond a critical temperature related to the repulsive force potential of the electron gass, where one assuming the electron total energy to be thermal, where applying mechanical pressure destroys Sc when it exceeds a certain critical value. However when the electron total energy is an assumed to be that of the free electron model and that the pressure is thermal and mechanical, the situation is different. The quantum expression for resistance shows that the increase of mechanical pressure increases the critical temperature. Such phenomen on is observed in high temperature cupper group.
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