Aside from the namesake quantities, its Hamiltonian is proportional to Z alpha, and it is of second order in the electron velocity over the speed of light.
In mercury telluride, the strength of this interaction leads to an inverted band structure. Because this effect is strong in heavy-fermion superconductors, a Cooper pair's spin is no longer a good quantum number in such materials. Aside from the namesake quantities, its Hamiltonian is proportional to Z alpha, and it is of second order in the electron velocity over the speed of light. When it is weak, Land?s interval rule states that the interval between successive levels that it splits is proportional to the total angular momentum of the higher level. It leaves a 2 J + 1 degeneracy and can be thought of as an internal Zeeman effect. For 10 points, what is this quantum-mechanical interaction responsible for fine structure, which is linear in the spin of the electron and written as S dot L?
In mercury telluride, the strength of this interaction leads to an inverted band structure.
spin-orbit coupling [or spin-orbit interaction]