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12 Current news about the topic hall effect

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Magnetic effect without a magnet

Surprise in solid-state physics: The Hall effect, which normally requires magnetic fields, can also be generated in a completely different way – with extreme strength

23-Feb-2021

Electric current is deflected by a magnetic field – in conducting materials this leads to the so-called Hall effect. This effect is often used to measure magnetic fields. A surprising discovery has now been made at TU Wien, in collaboration with scientists from the Paul Scherrer Institute ...

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The marriage of topology and magnetism in a Weyl system

06-Aug-2018

Topology is a global aspect of materials, leading to fundamental new properties for compounds with large relativistic effects. The incorporation of heavy elements give rise to non-trivial topological phases of matter, such as topological insulators, Dirac and Weyl semimetals. The semimetals are ...

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Advancement in spintronics technology

06-Feb-2018

Engineers at the University of California, Riverside, have reported advances in so-called "spintronic" devices that will help lead to a new technology for computing and data storage. They have developed methods to detect signals from spintronic components made of low-cost metals and silicon, ...

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Information storage with a nanoscale twist

30-Mar-2017

Swirling objects known as magnetic vortices and skyrmions can be miniaturized without sacrificing mobility, a KAUST-led international research team has found. These findings are relevant for future "race-track" memory technologies that feature massive densities of moveable magnetic bits. In ...

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Achieving zero resistance in energy flow

MIT postdoc Cui-Zu Chang makes a spintronic breakthrough in the Moodera group.

09-May-2016

Laptop computer users operating their devices on their laps will be familiar with the heat they generate, which comes from electrical resistance converting waste energy to heat. Scientists dream of creating electronic devices with little or no resistance to the flow of electricity, in order to ...

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A new way to get electricity from magnetism

'Inverse spin Hall effect' works in several organic semiconductors

20-Apr-2016

By showing that a phenomenon dubbed the "inverse spin Hall effect" works in several organic semiconductors - including carbon-60 buckyballs - University of Utah physicists changed magnetic "spin current" into electric current. The efficiency of this new power conversion method isn't yet known, ...

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New physics and application of antiferromagnet uncovered

19-Feb-2016

The research group of Professor Hideo Ohno and Associate Professor Shunsuke Fukami of Tohoku University has studied the control of magnetization using a current applied to heterostructures comprising an antiferromagnet. They found that the current gives rise to a flow of electron spin in the ...

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A new magnetoresistance effect occurring in materials with strong spin-orbit coupling

28-Jan-2016

These materials, which include metals such as platinum or tantalum, are characterized for being capable of generating a spin current from an electrical current (and viceversa) by means of the so-called spin Hall effect. For this reason, these materials are of outmost importance in the field of ...

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Fractional quantum Hall effect: Experimental progress and quantum computing applications

12-Jan-2015

The Hall effect, discovered in 1879, is observable when a Hall voltage perpendicular to the current is produced across a conductor under a magnetic field. Although the Hall effect was discovered in a sheet of gold leaf by Edwin Hall, this effect does not require a two-dimensional condition.A ...

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Negative resistivity leads to positive resistance in the presence of a magnetic field

13-Dec-2013

In a paper appearing in Nature's Scientific Reports, Dr. Ramesh Mani, professor of physics and astronomy at Georgia State University, reports that, in the presence of a magnetic field, negative resistivity can produce a positive resistance, along with a sign reversal in the Hall effect, in ...

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