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Search results for quantum Hall

Nanophysics Dec 3, 2024

New method realize ohmic contacts in n-type MoSâ‚‚ transistors at cryogenic temperatures

Semiconducting transition metal dichalcogenides (TMDs) are a class of layered materials exhibiting unique optoelectronic properties that could be leveraged to develop transistors, sensors and other nanoelectronics. Despite ...

Optics & Photonics Nov 26, 2024

Twisted light gives electrons a spinning kick: Researchers develop a novel way to control quantum interactions

It's hard to tell when you're catching some rays at the beach, but light packs a punch. Not only does a beam of light carry energy, it can also carry momentum. This includes linear momentum, which is what makes a speeding ...

Condensed Matter Nov 19, 2024

Âé¶¹ÒùÔºicists explain how fractional charge in pentalayer graphene could work

MIT physicists have taken a key step toward solving the puzzle of what leads electrons to split into fractions of themselves. Their solution sheds light on the conditions that give rise to exotic electronic states in graphene ...

Condensed Matter Oct 30, 2024

Quantum simulator could help uncover materials for high-performance electronics

Quantum computers hold the promise to emulate complex materials, helping researchers better understand the physical properties that arise from interacting atoms and electrons. This may one day lead to the discovery or design ...

Condensed Matter Oct 24, 2024

Room-temperature nonreciprocal Hall effect could heat up future technology development

An old physical phenomenon known as the Hall effect has revealed some new tricks, according to a team co-led by researchers at Penn State and the Massachusetts Institute of Technology (MIT). They have reported their findings, ...

Condensed Matter Oct 17, 2024

Âé¶¹ÒùÔºicists report emergence of ferromagnetism at onset of Kondo breakdown in moiré bilayer lattices

Moiré superlattices are materials consisting of two layers stacked on top of each other with either a small rotational misalignment or a lattice mismatch between them. The Kondo lattice model, on the other hand, describes ...

Condensed Matter Oct 11, 2024

Âé¶¹ÒùÔºicists reveal nonlinear transport induced by quantum geometry in planar altermagnets

In recent years, many physicists and materials scientists have been studying a newly uncovered class of magnetic materials known as altermagnets. These materials exhibit a unique type of magnetism that differs from both conventional ...

Nanophysics Oct 4, 2024

Theoretical physicist uncovers how twisting layers of a material can generate mysterious electron-path-deflecting effect

In 2018, a discovery in materials science sent shock waves throughout the community. A team showed that stacking two layers of graphene—a honeycomb-like layer of carbon extracted from graphite—at a precise "magic angle" ...

Condensed Matter Sep 25, 2024

A detailed microscopic theory: Lifting the veil of topological censorship

Topological protection provides unprecedented robustness of physical phenomena against all kinds of perturbations; but in doing so, it exercises topological censorship by hiding all kinds of interesting and important microscopic ...

Condensed Matter Sep 25, 2024

Intrinsic magnetic structure observed for the first time in a kagome lattice

A joint research group from China recently achieved the first observation of intrinsic magnetic structures in a kagome lattice by using the highly sensitive magnetic force microscopy (MFM) system of the Steady High Magnetic ...

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