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General Questions and Answers / Iv curve converged in ONE step!?
« on: July 23, 2018, 10:24 »
Hi,
I attempted IV curve calculations for MTJ device for the range of bias from -1.0V to 1.0V in steps of 0.05V. The geometry was relaxed up to max force tolerance 0.01eV/A. K point sampling 11*11*171 and density mesh cutoff 110Ha used. Maximum steps 200 was set.
IV curve calculations calculation were converged for all +ve voltages and for few -ve voltages up to -0.40V. Beyond that, for -0.45V to -0.60V, it not converged BUT after that for -0.65V to -1.0V converged in ONE step with ~zero current.
Its hard to me to believe convergence in one step for such case. How can I validate it?
Regards
Kashinath
I attempted IV curve calculations for MTJ device for the range of bias from -1.0V to 1.0V in steps of 0.05V. The geometry was relaxed up to max force tolerance 0.01eV/A. K point sampling 11*11*171 and density mesh cutoff 110Ha used. Maximum steps 200 was set.
IV curve calculations calculation were converged for all +ve voltages and for few -ve voltages up to -0.40V. Beyond that, for -0.45V to -0.60V, it not converged BUT after that for -0.65V to -1.0V converged in ONE step with ~zero current.
Its hard to me to believe convergence in one step for such case. How can I validate it?
Regards
Kashinath