Search results for quantum anomalous hall

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 11, 2024

Overcoming magnetic disorder: Toward low-energy topological electronics

Overcoming magnetic disorder is key to exploiting the unique properties of quantum anomalous Hall (QAH) insulators. A Monash-led team has demonstrated that the breakdown in topological protection is caused by magnetic disorder, ...

Condensed Matter Sep 6, 2024

Researchers advance new class of quantum critical metal that could advance electronic devices

A new study led by Rice University's Qimiao Si has unveiled a new class of quantum critical metal, shedding light on the intricate interactions of electrons within quantum materials. Published in Physical Review Letters on ...

Condensed Matter Sep 2, 2024

Study predicts a new quantum anomalous crystal in fractionally filled moiré superlattices

Moiré superlattices, structures that arise when two layers of two-dimensional (2D) materials are overlaid with a small twist angle, have been the focus of numerous physics studies. This is because they have recently been ...

Superconductivity Jul 10, 2024

Physicists move one step closer to topological quantum computing

A team of experimental physicists led by the University of Cologne have shown that it is possible to create superconducting effects in special materials known for their unique edge-only electrical properties. This discovery ...

Condensed Matter Jun 18, 2024

Researchers observe a large anomalous Hall effect triggered by spin-fluctuating devil's staircase

A research group from University of Tsukuba has discovered that fluctuations of electron spins in magnetic materials trigger a large anomalous Hall effect during phase transition known as the devil's staircase magnetic transition.

Condensed Matter May 13, 2024

Physicists create five-lane superhighway for electrons

MIT physicists and colleagues have created a five-lane superhighway for electrons that could allow ultra-efficient electronics and more. The work, reported in the May 9 issue of Science, is one of several important discoveries ...

Condensed Matter Apr 23, 2024

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 ...

Quantum Physics Apr 15, 2024

A balanced quantum Hall resistor provides a new measurement method

Researchers at the University of Würzburg have developed a method that can improve the performance of quantum resistance standards. It's based on a quantum phenomenon called Quantum Anomalous Hall effect.

Condensed Matter Apr 9, 2024

New technique lets scientists create resistance-free electron channels

An international research team led by Lawrence Berkeley National Laboratory (Berkeley Lab) has taken the first atomic-resolution images and demonstrated electrical control of a chiral interface state—an exotic quantum phenomenon ...

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