The Energy to Flip Electron Spin

 


From the University of Basel, scientists have studied the ferromagnetic properties electrons in the 2-D semiconductor molybdenum disulfide. They discovered a surprisingly simple way of measuring the energy needed to flip an electron’s spin.

Ferromagnetism Is an important physical phenomenon. It plays a necessary role in many technologies. It’s well known that iron, cobalt and nickel are magnetic at room temperature. It’s because their electron spins are aligned in parallel. Only at very high temperatures, these materials lose their magnetic properties. 

Professor Richard Warburton of the Department of Physics and the Swiss Nanoscience Institute of the University of Basel has  shown that molybdenum disulfide also exhibits ferromagnetic Properties under certain conditions. When exposed to an external magnetic field, for example, the electron spins in this material all point in the same direction.

The latest study posted in Physical Review Letters, discusses the researchers having determined how much energy it takes to flip an individual electrons spin within its ferromagnetic state. This exchange of energy is significant because it describes the stability of electromagnetism. 

2D Materials are frequently used in this research, thanks in part to their special properties, which are the results of quantum mechanical effects. They can also be stacked to form Van der Waals heterostructures. From the study, the molybdenum disulfide Layer is surrounded by hexagonal boron nitrate And Graphene. 

These layers are held together by Van der Waals bonds and are of the widest in the electronic field, thanks to their unique properties!!! 

Further understanding of these properties is vital in order to apply them in the future! 

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