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Search results for time-reversal symmetry

General Âé¶¹ÒùÔºics Jun 25, 2020

Measure squeezing in a novel way

'Squeezing' is used in physics, among other things, to improve the resolution of measuring instruments. It allows disturbing noise to be suppressed in a way that smaller signals can be detected more sensitively. The team ...

General Âé¶¹ÒùÔºics Jun 17, 2020

Observation of excess events in the XENON1T dark matter experiment

Scientists from the international XENON collaboration, an international experimental group including the Kavli Institute for the Âé¶¹ÒùÔºics and Mathematics of the Universe (Kavli IPMU), University of Tokyo; the Institute for ...

General Âé¶¹ÒùÔºics Jun 17, 2020

Simultaneous nodal superconductivity and broken time-reversal symmetry in CaPtAs

In the vast majority of superconducting materials, Cooper pairs have what is known as even parity, which essentially means that their wave function does not change when electrons swap spatial coordinates. Conversely, some ...

Materials Science Jun 11, 2020

New topological materials could have multiple electrical properties

This it is the story of a unique material—made of a single compound, it conducts electrons in different ways on its different surfaces and doesn't conduct at all in its middle. It is also the story of three research groups—two ...

Quantum Âé¶¹ÒùÔºics Jun 2, 2020

Discoveries of high-Chern-number and high-temperature Chern insulator states

The Quantum Hall effect (QHE) is one of the most important discoveries in physical sciences. Due to the one-dimensional (1-D) dissipationless edge states, QHE exhibits exotic transport properties with quantized Hall resistance ...

General Âé¶¹ÒùÔºics May 27, 2020

Âé¶¹ÒùÔºicists measure a short-lived radioactive molecule for first time

Researchers at MIT and elsewhere have combined the power of a super collider with techniques of laser spectroscopy to precisely measure a short-lived radioactive molecule, radium monofluoride, for the first time.

General Âé¶¹ÒùÔºics May 22, 2020

Oriented hexagonal boron nitride foster new type of information carrier

Today's computers use the presence or absence of charge (0s and 1s) to encode information, where the physical motion of charges consume energy and cause heat. A novel alternative is to utilize the wave quantum number of electrons ...

General Âé¶¹ÒùÔºics May 20, 2020

4-D electric circuit network with topology

In recent years, topology has emerged as an important tool to classify and characterize properties of materials. It has been found that many materials exhibit a number of unusual topological properties, which are unaffected ...

Condensed Matter May 18, 2020

Superconductors with 'zeitgeist' – when materials differentiate between the past and the future

Âé¶¹ÒùÔºicists at TU Dresden have discovered spontaneous static magnetic fields with broken time-reversal symmetry in a class of iron-based superconductors. This exceptional property calls for new theoretical models and may become ...

General Âé¶¹ÒùÔºics May 7, 2020

Finite-temperature violation of the anomalous transverse Wiedemann-Franz law

According to the Wiedemann-Franz (WF) law, the electrical conductivity of a metal is linked to its thermal counterpart, provided that the heat carried by the phonons is negligible and the electrons do not suffer inelastic ...

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