Geometric influences of a particle confined to a curved surface embedded in three-dimensional Euclidean space

In the spirit of the thin-layer quantization approach, we give the formula of the geometric influences of a particle confined to a curved surface embedded in three-dimensional Euclidean space. The geometric contributions can result from the reduced commutation relation between the acted function depending on normal variable and the normal derivative. According to the formula, we obtain the geometric potential, geometric momentum, geometric orbital angular momentum, geometric linear Rashba, and cubic Dresselhaus spin-orbit couplings. As an example, a truncated cone surface is considered. We find that the geometric orbital angular momentum can provide an azimuthal polarization for spin, and the sign of the geometric Dresselhaus spin-orbit coupling can be flipped through the inclination angle of generatrix.

Figure 1

A truncated cone surface and notations.

Figure 2

Schematic of the geometric OAM of $r=0,1/2R,R,3/2R$ with $i\hslash R=1$. The length of the green arrows describes the strength of polarization.