Toyohashi Tech researchers have fabricated Hall effect magnetic field sensors operable at least 400 C and in extreme radiation conditions using gallium nitride-based heterostructures a with two-dimensional electron gas.
General Physics
Mar 22, 2012
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(PhysOrg.com) -- Theoretical physicists of the University of Innsbruck have formulated a new concept to engineer exotic, so-called topological states of matter in quantum mechanical many-body systems. They linked concepts ...
Quantum Physics
Oct 3, 2011
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Conductors of electrical current, including copper, heat up and limit the ability to increase circuit densities. Unusual materials that exhibit the so-called ‘quantum spin Hall effect’, in which current can flow ...
General Physics
Sep 30, 2011
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New research using graphene presents the most precise measurements of the quantum Hall effect ever made, one of the key steps in the process to redefine two SI units.
General Physics
Sep 29, 2011
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New research from NPL's Quantum Detection Group presents the most precise measurements of the quantum Hall effect ever made, using the two-dimensional material graphene.
Quantum Physics
Sep 19, 2011
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Scientists in Japan have shown that the properties of a recently discovered state of matter—a chiral spin liquid—can be controlled by applying a magnetic field1, a concept that could be harnessed for low-energy-consumption ...
General Physics
Sep 9, 2011
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Surprisingly, transmitting information-rich photons thousands of miles through fiber-optic cable is far easier than reliably sending them just a few nanometers through a computer circuit. However, it may soon be possible ...
General Physics
Aug 22, 2011
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(PhysOrg.com) -- Completing the story they started by creating synthetic magnetic fields, scientists from the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology and the University ...
General Physics
Mar 31, 2011
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The discoveries of superconductivity, the quantum Hall effect and the fractional quantum Hall effect were all the result of measurements made at increasingly lower temperatures. Now, pushing the regime of the very cold into ...
General Physics
Dec 12, 2010
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(PhysOrg.com) -- Just as electronics revolutionized computing and communications technology, spintronics is touted to follow suit. This relatively new field involves manipulating the flow of a magnetism-related property called ...
General Physics
Oct 4, 2010
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