Electrons have three intrinsic properties: spin, charge and orbital angular momentum. Researchers have long studied how to ...

When a magnetic material is bombarded with short pulses of laser light, it loses its magnetism within femtoseconds (10 –15 seconds). The spin, or angular momentum, of the electrons in the material ...

Photons can have half-integer values of angular momentum when they are confined to fewer than three dimensions. That is the conclusion of physicists in Ireland, who have revived an experiment first ...

Pseudospin, an additional degree of freedom inherent in graphene, plays a key role in understanding many fundamental phenomena such as the anomalous quantum Hall effect, electron chirality and Klein ...

Can light behave like a whirlwind? It turns out it can—and such "optical tornadoes" have now been created in an extremely ...

Introduction You might have seen figure skaters spinning around quickly and then tucking their arms to spin faster—or opening them to spin more slowly. This happens, thanks to a physics concept known ...

In an introductory physics course, there are three big ideas. There is the work-energy principle, the momentum principle and then the angular momentum principle. I'll skip the work-energy principle ...

Optical beams carrying orbital angular momentum (OAM) have attracted growing attention during the last decades, exhibiting disruptive applications in a wide range of fields: particle trapping and ...

Pradhan, N., et al. "Signature of Andreev-Bashkin superfluid drag from cavity optomechanics." Physical Review Research 7. (2025): 23051. Print. * Pradhan, N., et al. "Cavity optomechanical detection ...