All Questions
3
questions
0
votes
0
answers
31
views
What is helical Dirac nature?
A concept in Spintronics which can not be found on Wikipedia. The picture is from a review of Spintronics of 2016 by Fert.
- 1
0
votes
0
answers
121
views
Is it possible to construct an operator for $z$-component of spin for a 2D system?
Let's say we have an arrangement of spins in 2D space (as given in the below picture).
Assume that the $z$-axis is out of the plane and a spin (circled in red) makes an angle $\theta$ with the $x$-...
- 1,335
0
votes
0
answers
57
views
Antiferromagnetic-like interaction, but preferring 120/240 angles instead of 180?
Antiferromagnetic interaction energetically prefers opposite spins for neighbors: rotated by 180 degrees.
But imagine there is $S_3$ symmetry: 3 possibilities rotated by 120 degrees and ...
- 960