Highlights
Mar 2, 2016
Massachusetts Institute of Technology
First Experimental Observation of Weyl Points
J. Joannopoulos and M. Soljačić
Weyl particles – massless particles linearly dispersing in all three dimensions (3D) -- were first theorized by Hermann Weyl in 1929, who found such a solution to the Dirac equation proposed by Paul Dirac in 1928. A material hosting Weyl particles features singular points in its dispersion relations – the Weyl points. Weyl points are 3D upgrades of the 2D Dirac points in graphene, the proposal of which led to a Nobel prize in Physics in 2010. However, there has been no observation of the Weyl points (particles) until 2015.
Feb 9, 2016
Cornell University
Imaging Magnetic and Electric Fields with an Electron Microscope
M. W. Tate, P. Purohit, D. Chamberlain, K. X. Nguyen, R. Hovden, C. S. Chang, P. Deb, E. Turgut, J. T. Heron, D. G. Schlom, D. C. Ralph, G. D. Fuchs, K. S. Shanks, H. T. Philipp, D. A. Muller, and S. M. Gruner, Microscopy Microanal., (2016)
Imaging Magnetic and Electric Fields with an Electron Microscope
A new high-speed detector for electron microscopes uses every transmitted electron to measure electric and magnetic fields
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