Spin is described mathematically as a vector for some particles such as photons, and as a spinor or bispinor for other particles such as electrons. Spinors and bispinors behave similarly to …

2016年11月9日 · 自旋密度是三维函数，每个点一个数值。而我们往往想讨论某个片段、某个原子、某个原子轨道带多少单电子，这就需要做自旋布居分析(Spin population analysis)，有很多 …

2025年3月8日 · spin, in physics, the amount of angular momentum associated with a subatomic particle or nucleus and measured in multiples of a unit called the Dirac h, or h-bar (ℏ), equal to …

2022年11月22日 · Electrons always seem to spin. Every electron ever observed, whether it's just ambling around a carbon atom in your fingernail or speeding through a particle accelerator, …

Summary: quantum mechanical spin In addition to orbital angular momentum, ˆL, quantum particles possess an intrinsic angular momentum known as spin, Sˆ. For fermions, spin is half …

2019年12月5日 · Last lecture address two unique aspects of electrons: spin and indistinguishability and how they couple into describing multi-electron wavefunctions. The spin …

We consider two independent systems that each carries angular momenta (each could be either orbital angular momentum or spin). Before the two systems are coupled, each system is …

6 天之前 · Spin introduces two additional quantum numbers to our model of the hydrogen atom. Both were discovered by looking at the fine structure of atomic spectra. Spin is a fundamental …

What is an atomic spin? Atomic spin is a measurable magnetic moment of atoms that behaves like a small elementary magnet. The atomic spin is attributed to the spins of the particles that …

Here we review the theoretical foundations and recent developments of atomistic spin dynamics and their application to advanced magnetic materials, thermal and ultrafast spin dynamics.