A valley so low: Electrons congregate in ways that may be useful to “valleytronics”

Yellow swirling ellipses against a blue background

A Princeton University-led study has revealed an emergent electronic behavior on the surface of bismuth crystals that could lead to insights on the growing area of technology known as "valleytronics." The term refers to energy valleys that form in crystals and that can trap single electrons. These valleys potentially could be used to store information, … Continue reading A valley so low: Electrons congregate in ways that may be useful to “valleytronics”

Spotting the spin of the Majorana fermion under the microscope

By Catherine Zandonella, Office of the Dean for Research Researchers at Princeton University have detected a unique quantum property of an elusive particle notable for behaving simultaneously like matter and antimatter. The particle, known as the Majorana fermion, is prized by researchers for its potential to open the doors to new quantum computing possibilities. In … Continue reading Spotting the spin of the Majorana fermion under the microscope

Mysterious force harnessed in a silicon chip

By Catherine Zandonella for the Office of the Dean for Research Getting something from nothing sounds like a good deal, so for years scientists have been trying to exploit the tiny amount of energy found in nearly empty space. It's a source of energy so obscure it was once derided as a source of "perpetual … Continue reading Mysterious force harnessed in a silicon chip

Theorists propose new class of topological metals with exotic electronic properties (Physics Review X)

By Tien Nguyen, Department of Chemistry Researchers at Princeton, Yale, and the University of Zurich have proposed a theory-based approach to characterize a class of metals that possess exotic electronic properties that could help scientists find other, similarly-endowed materials. Published in the journal Physical Review X, the study described a new class of metals based … Continue reading Theorists propose new class of topological metals with exotic electronic properties (Physics Review X)

Electrons slide through the hourglass on surface of bizarre material (Nature)

By Staff A team of researchers at Princeton University has predicted the existence of a new state of matter in which current flows only through a set of surface channels that resemble an hourglass. These channels are created through the action of a newly theorized particle, dubbed the "hourglass fermion," which arises due to a … Continue reading Electrons slide through the hourglass on surface of bizarre material (Nature)

Down the rabbit hole: how electrons travel through exotic new material (Science)

By Catherine Zandonella, Office of the Dean for Research Researchers at Princeton University have observed a bizarre behavior in a strange new crystal that could hold the key for future electronic technologies. Unlike most materials in which electrons travel on the surface, in these new materials the electrons sink into the depths of the crystal … Continue reading Down the rabbit hole: how electrons travel through exotic new material (Science)

‘Material universe’ yields surprising new particle (Nature)

By Staff An international team of researchers has predicted the existence of a new type of particle called the type-II Weyl fermion in metallic materials. When subjected to a magnetic field, the materials containing the particle act as insulators for current applied in some directions and as conductors for current applied in other directions. This … Continue reading ‘Material universe’ yields surprising new particle (Nature)

Long-sought chiral anomaly detected in crystalline material (Science)

By Catherine Zandonella, Office of the Dean for Research A study by Princeton researchers presents evidence for a long-sought phenomenon — first theorized in the 1960s and predicted to be found in crystals in 1983 — called the "chiral anomaly" in a metallic compound of sodium and bismuth. The additional finding of an increase in … Continue reading Long-sought chiral anomaly detected in crystalline material (Science)