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Researchers Find Semimetal That Clings to a Quantum Precipice

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Researchers Find Semimetal That Clings to a Quantum Precipice
Scientists studying a special kind of semimetals have found a material with an unusually pristine nature that could be crucial for developing powerful new quantum technologies and discovering new phases of matter.
In an open access paper published in Science Advances, Johns Hopkins physicists and colleagues at Rice University, the Vienna University of Technology (TU Wien), and the National Institute of Standards and Technology (NIST), present experimental evidence of naturally occurring quantum criticality in a material.
Criticality is the point at which a material hovers between two phases-like the slushy transition between water and ice-without ever settling. Useful materials often exploit this point. For example, air conditioners use compressors to change refrigerant from gas to liquid, and the “liquid crystals” of a commonplace liquid crystal display (LCD) are situated at a transition b ....

Collin Broholm , Peter Blaha , Silke Paschen , Josea Rodriguez Rivera , Andrey Sidorenko , Hannes Winkler , Qimiao Si , Yiming Qiu , Johns Hopkins , Wesley Fuhrman , European Union Horizon , Johns Hopkins University , Department Of Energy Basic Sciences , University Of Maryland , Neutron Research , Johns Hopkins Institute For Quantum Matter , Austrian Science Fund , National Science Foundation , Welch Foundation , Vienna University Of Technology Tu Wien , National Institute Of Standards , Betty Moore Foundation , Rice University , Lockheed Martin , Science Advances , Vienna University ,

Pristine quantum criticality found

Pristine quantum criticality found
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Rice University , United States , Brown School , Collin Broholm , Luisa Puiu , Peter Blaha , Andrey Sidorenko , Hannes Winkler , Wes Fuhrman , Jose Rodriguez Rivera , Qimiao Si , Olgak Wiess , Yiming Qiu , Johns Hopkins , Wesley Fuhrman , Johns Hopkins University , University Of Maryland , Brown School Of Engineering , National Science Foundation , Jeff Fitlow Rice University , Vienna University Of Technology Tu Wien , National Institute Of Standards , Baker Institute For Public , Wiess School Of Natural Sciences , Tu Wien Institute For Solid State Physics , European Union Horizon ,

Nanotechnology Now - Press Release: Quantum quirk yields giant magnetic effect, where none should exist: Study opens window into the landscape of extreme topological matter

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Home > Press > Quantum quirk yields giant magnetic effect, where none should exist: Study opens window into the landscape of extreme topological matter
Rice University theoretical physicists (from left) Hsin-Hua Lai, Qimiao Si and Sarah Grefe worked with experimental collaborators at Vienna University of Technology to understand topological features of a nonmagnetic Weyl-Kondo semimetal allowed it to produce a giant Hall effect in the absence of a magnetic field.
CREDIT
Photo by Jeff Fitlow/Rice University
Abstract:
In a twist befitting the strange nature of quantum mechanics, physicists have discovered the Hall effect a characteristic change in the way electricity is conducted in the presence of a magnetic field in a nonmagnetic quantum material to which no magnetic field was applied. ....

Brown School , United States , Rice University , Nordrhein Westfalen , Oleg Rubel , Peter Blaha , Toni Shiroka , Gaku Eguchi , Sarah Grefe , Edwin Hall , Qimiao Si , Xinlin Yan , Mathieu Taupin , Sami Dzsaber , Hsin Hua Lai , Vienna University Of Technology , Brown School Of Engineering , National Science Foundation , Jeff Fitlow Rice University , Baker Institute For Public , Wiess School Of Natural Sciences , Swiss National Science Foundation , Wave Inc , Switzerland Paul Scherrer Institute , Tu Wien Institute For Solid State Physics , European Union Horizon ,