Electrons become fractions of themselves in graphene, study ... - MIT News
2024年2月21日 · MIT physicists have observed fractional quantum Hall effect in simple pentalayer graphene. The finding could make it easier to develop more robust quantum computers.
Floquet engineering of anomalous Hall effects in monolayer MoS …
2 天之前 · Over time, the conventional Hall effect 20 has evolved into a large family of Hall effects including but not limited to anomalous Hall effect 21,22,23, spin Hall effect 24, valley Hall effect 25 ...
Theoretical modeling illuminates a new nonlinear Hall Effect - Phys.org
2023年10月30日 · New materials with exciting and predictable responses such as the quantum metric Hall effect await discovery and may ultimately serve as future platforms for electronic components or sensors."
Light-enhanced nonlinear Hall effect | Communications Physics
3 天之前 · The nonlinear Hall effect is an exciting response contribution beyond the much-studied quantum anomalous Hall effect 1,2,3,4,5,6,7,8, in which an applied electric field results in a quantized ...
Discovery of a new Hall effect: Does it violate Onsager's reciprocal ...
2023年12月14日 · In a new study, for the first time, researchers have observed an anisotropic anomalous Hall effect in a spinel oxide NiCo 2 O 4 thin film with conical magnetic anisotropy; this characteristic...
Theoretical modeling illuminates a new nonlinear Hall Effect
2023年10月30日 · This Hall effect is driven by the quantum metric, which defines the distances between electronic wavefunctions inside a crystal. The experimental work was led by scientists at Harvard University while the theoretical modeling was developed at Ames Lab.
New quantum magnet unleashes electronics potential | MIT News ...
2023年7月25日 · Researchers discover how to control the anomalous Hall effect and Berry curvature to create flexible quantum magnets for use in computers, robotics, and sensors. In a graphic representation of a two-dimensional material, squeezing and stretching leads to, respectively, positive and negative signs of the anomalous Hall effect, represented by arrows.
CCB Research: New Nonlinear Hall Effect Discovered
2023年6月15日 · The quantum metric nonlinear Hall effect switches direction upon reversing the AFM spins and exhibits distinct scaling that is independent of the scattering time. Our results open the door to discovering quantum metric responses predicted theoretically and pave the way for applications that bridge nonlinear electronics with AFM spintronics.
Pushing the Boundaries of Traditional Physics: Scientists Discover …
2024年2月5日 · Researchers have discovered an anisotropic anomalous Hall effect in a spinel oxide thin film, a phenomenon that varies with current direction and is explained by a new model incorporating a magnetic toroidal quadrupole structure, aligning with Onsager’s theorem.
Discovery of a New Hall Effect: Does It Violate Onsager's …
2023年12月14日 · Researchers at the University of Tsukuba and NIMS have observed a novel Hall effect wherein the deflection direction of current varies according to the current flow direction. Onsager's reciprocal theorem, a fundamental theorem in materials science, asserts the impossibility of such a phenomenon.