cap_veriloga.va

// VerilogA code for capacitor - LLG

`include "constants.vams"
`include "disciplines.vams"

module cap(p,n,mx);

inout p,n,mx;
ground gnd;
electrical p,n,mx;


parameter real alpha = 0.005; //damping constant of the material 
parameter real gamma = 17.32e10;//Gyro-magnetic ratio rad/(s.T)
parameter real Ms= 1.313e6 ;// in A\m 
parameter real e = 1.602176487e-19 ; //electron charge in coloumbs
parameter real thickness = 2n ; //z-axis
parameter real length = 50n ;//x axis
parameter real width = 50n ; //yaxis
parameter real volume = 2n*50n*50n*3.14 ; //volume of Ferromagnet (free-layer)
parameter real  pi = 3.14 ; // pi value
parameter real hbar = 1.0545716e-34; // Reduced Planck's constant


real C , cc ,Ns ;

analog begin 
Ns = (2*Ms*volume)/(gamma*hbar); 
C = Ns*e*(1+alpha*alpha);
cc = (1/C)*(I(p,n));
V(p,n) <+ idt(cc, V(mx,gnd));
end
endmodule