computational-physics

This repository contains some Fortran90 programs I wrote during my computational physics course.

1. Diluted Ising 2D.
   Metropolis Monte Carlo simulation is used to study the phase transition to a magnetized state occurring in a diluted 2D Ising model.

2. Driven Morse Using Runge Kutta.
   I solved driven morse oscillator model using Runge Kutta algorithm, rather than Euler algorithm.

3. Fermi Surface Energy.
   This program is designed to calculate the surface energy for given k in Pb(111) and Ag(111), both in infinite barrier and finite barrier. The formulas are calculated from free electron model and consider the restriction by metal film in z direction.

4. Integral Using Three Methods.
   In this directory I used Monte Carlo, simpson and trapezoidal methods to calculate the integral for normal distribution from 0 to 1.

5. Pair Correlation Funtion.
   sc.f90, bcc.f90, fcc.f90 and hcp.f90 realize the pair correlation functions for simple cubic(sc), body centered cubic(bcc), face centered cubic(fcc) and hexagonal close packed(hcp) crystal respectively.

If you have any questions, please feel free to ask. :)