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Current issue

ELEKTRO 12/2021 was released on December 1st 2021. Its digital version will be available immediately.

Topic: Measurement, testing, quality care

Market, trade, business
What to keep in mind when changing energy providers

SVĚTLO (Light) 6/2021 was released 11.29.2021. Its digital version will be available immediately.

Fairs and exhibitions
Designblok, Prague International Design Festival 2021
Journal Světlo Competition about the best exhibit in branch of light and lighting at FOR ARCH and FOR INTERIOR fair

Professional literature
The new date format for luminaires description

Stacking and twisting graphene unlocks a rare form of magnetism

13. 10. 2020 | Phys.org | www.phys.org

Since the discovery of graphene more than 15 years ago, researchers have been in a global race to unlock its unique properties. Not only is graphene—a one-atom-thick sheet of carbon arranged in a hexagonal lattice—the strongest, thinnest material known to man, it is also an excellent conductor of heat and electricity.

Now, a team of researchers at Columbia University and the University of Washington has discovered that a variety of exotic electronic states, including a rare form of magnetism, can arise in a three-layer graphene structure. The findings appear in an article published in Nature Physics.

Twisting graphene

The work was inspired by recent studies of twisted monolayers or twisted bilayers of graphene, comprising either two or four total sheets. These materials were found to host an array of unusual electronic states driven by strong interactions between electrons. "We wondered what would happen if we combined graphene monolayers and bilayers into a twisted three-layer system," said Cory Dean, a professor of physics at Columbia University and one of the paper's senior authors. "We found that varying the number of graphene layers endows these composite materials with some exciting new properties that had not been seen before."

Read more at Phys.org

Image Credit: Columbia University

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