Redefining the kilogram and the ampere
New research using graphene presents the most precise measurements of the quantum Hall effect ever made, one of the key steps in the process to redefine two SI units.
General Physics
Sep 29, 2011
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Page 15 - News tagged with hall effect
Better 'photon loops' may be key to computer and physics advances
Surprisingly, transmitting information-rich photons thousands of miles through fiber-optic cable is far easier than reliably sending them just a few nanometers through a computer circuit. However, it may soon be possible ...
General Physics
Aug 22, 2011
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NIST's new scanning probe microscope is supercool
The discoveries of superconductivity, the quantum Hall effect and the fractional quantum Hall effect were all the result of measurements made at increasingly lower temperatures. Now, pushing the regime of the very cold into ...
General Physics
Dec 12, 2010
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When old is new again: Hall effect associated with electrons also occurs in non-charged particles
(PhysOrg.com) -- Just as electronics revolutionized computing and communications technology, spintronics is touted to follow suit. This relatively new field involves manipulating the flow of a magnetism-related property called ...
General Physics
Oct 4, 2010
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Observation of 3D acoustic quantum Hall states
The quantum Hall effect (QHE) is one of the most notable discoveries in condensed matter physics, opening the door to topological physics. Extending QHE into three dimensions is an inspiring but challenging endeavor. This ...
Condensed Matter
Jul 11, 2024
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Tunable quantum anomalous Hall effects in van der Waals heterostructures
The quantum anomalous Hall effect (QAHE) has unique advantages in topotronic applications, but realizing the QAHE with tunable magnetic and topological properties for building functional devices is still a key scientific ...
Condensed Matter
Apr 23, 2024
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Quantum question about the anomalous Hall effect answered
A mysterious magnetic effect that causes the path that electrons take through a material to bend—called the anomalous Hall effect—has been elucidated in a new mathematical analysis by two RIKEN physicists. Their work ...
Quantum Physics
Aug 17, 2023
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Researchers find novel topology-correlation interplay in toy model system built from iridate superlattice
In topological physics, band topology often originates from spin-orbit interaction, which gives rise to complex hopping parameters. While this approach has enjoyed great success in non-interacting or weakly interacting electronic ...
Condensed Matter
Aug 25, 2022
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Researchers report high carrier mobility of cubic boron arsenide
Cubic boron arsenide (c-BAs), a semiconductor with ultrahigh thermal conductivity comparable to diamond, has attracted wide attention since 2018, with many people wondering whether it is suitable for transistors.
General Physics
Jul 22, 2022
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Harmonious electronic structure leads to enhanced quantum materials
The electronic structure of metallic materials determines the behavior of electron transport. Magnetic Weyl semimetals have a unique topological electronic structure—the electron's motion is dynamically linked to its spin. ...
Quantum Physics
Jun 1, 2021
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