Search results for quantum anomalous hall

General Physics Jan 8, 2020

Intrinsic quantized anomalous Hall effect in a moiré heterostructure

The quantum anomalous Hall (QAH) effect can combine topology and magnetism to produce precisely quantized Hall resistance at zero magnetic field (an environment carefully screened from magnetic fields). In a recent report ...

General Physics Jan 3, 2020

The case of the elusive Majorana: The so-called 'angel particle' is still a mystery

A 2017 report of the discovery of a particular kind of Majorana fermion—the chiral Majorana fermion, referred to as the "angel particle"—is likely a false alarm, according to new research. Majorana fermions are enigmatic ...

General Physics Dec 18, 2019

Topological materials for information technology offer lossless transmission of signals

New experiments with magnetically doped topological insulators at BESSY II have revealed possible methods of lossless signal transmission that involve a surprising self-organization phenomenon. In the future, it might be ...

Materials Science Dec 13, 2019

Researchers realize 'ideal' kagome metal electronic structure

Since 2016, a team of MIT researchers consisting of graduate students Linda Ye and Min Gu Kang, associate professor of physics Joseph G. Checkelsky, and Class of 1947 Career Development Assistant Professor of Physics Riccardo ...

General Physics Nov 27, 2019

Natural van der Waals heterostructural single crystals with magnetic and topological properties

Heterostructures with magnetism and topology (geometry) are promising materials to realize exotic topological quantum states. However, such materials are challenging to engineer or synthesize. In a new report on Science Advances, ...

General Physics Nov 5, 2019

Laser pulses create topological state in graphene

Discovering ways to control the topological aspects of quantum materials is an important research frontier because it can lead to desirable electrical and spin transport properties for future device technologies. Now MPSD ...

Quantum Physics Sep 30, 2019

Realizing a giant magnetic field by moiré pattern engineering

Scientists at the University of Hong Kong and Hunan Normal University showed that, in homobilayer transition metal dichalcogenides, the real-space Berry phase from moiré patterns manifests as a periodic magnetic field. The ...

General Physics Sep 20, 2019

The best of two worlds: Magnetism and Weyl semimetals

Imagine a world in which electricity could flow through the grid without any losses or where all the data in the world could be stored in the cloud without the need for power stations. This seems unimaginable but a path ...

Nanomaterials Jul 26, 2019

Physicists discover new quantum trick for graphene: magnetism

Sometimes the best discoveries happen when scientists least expect it. While trying to replicate another team's finding, Stanford physicists recently stumbled upon a novel form of magnetism, predicted but never seen before, ...

General Physics Jul 23, 2019

Unconventional phenomena triggered by acoustic waves in 2-D materials

Researchers at the Center for Theoretical Physics of Complex Systems (PCS), within the Institute for Basic Science (IBS, South Korea), and colleagues have reported a novel phenomenon, called Valley Acoustoelectric Effect, ...

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