Show Posts
1
Scripts, Tutorials and Applications / effective mass direction
« on: December 3, 2015, 03:49 »
How are the projected effective masses along a particular direction related with the effective mass tensor?
I noted that the "direction_fracational" is a three-dimensional vector, e.g. [1, 0, 1] . The output vector is also a three-dimensional vector, e.g., [X,0,0], where "X" is the value of the effective mass along a particular direction as specified in the "direction_fractional".
My question is what is the mathematical expression that connects the "direction_fractional" vector, the effective mass tensor and the output vector?
Thanks,
-rs1
I noted that the "direction_fracational" is a three-dimensional vector, e.g. [1, 0, 1] . The output vector is also a three-dimensional vector, e.g., [X,0,0], where "X" is the value of the effective mass along a particular direction as specified in the "direction_fractional".
My question is what is the mathematical expression that connects the "direction_fractional" vector, the effective mass tensor and the output vector?
Thanks,
-rs1