Phys.org  July 6, 2022 To visualize electron vortices, an international team of researchers (Israel, USA – University of Colorado, MIT) synthesized pure single crystals of tungsten ditelluride, and exfoliated thin flakes of the material. Using e-beam lithography and plasma etching techniques they patterned each flake into a center channel connected to a circular chamber on either side. They etched the same pattern into thin flakes of gold with ordinary, classical electronic properties. They ran a current through each patterned sample at ultralow temperatures of 4.5 kelvins and measured the current flow at specific points throughout each sample, using SQUID on […]