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Caltech: Magnetism Drives Metals to Insulators in New Experiment


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Like all metals, silver, copper, and gold are conductors. Electrons flow across them, carrying heat and electricity. While gold is a good conductor under any conditions, some materials have the property of behaving like metal conductors only if temperatures are high enough; at low temperatures, they act like insulators and do not do a good job of carrying electricity. In other words, these unusual materials go from acting like a chunk of gold to acting like a piece of wood as temperatures are lowered. Physicists have developed theories to explain this so-called metal–insulator transition, but the mechanisms behind the transitions are not always clear. ....

Yejun Feng , Patrick Lee , Thomas Rosenbaum , David Mandrus , John Slater , Nevill Francis Mott , Johns Hopkins University , Nature Communications , Okinawa Institute For Science , University Of Tennessee , Technology Graduate University , Okinawa Institute , Technology Graduate , William Davidow Presidential , Sir Nevill Francis Mott , Nobel Prize , Yishu Wang , பேட்ரிக் லீ , தாமஸ் ரோசன்பாம் , ஜான் ஸ்லேட்டர் , ஜான்ஸ் ஹாப்கின்ஸ் பல்கலைக்கழகம் , இயற்கை தகவல்தொடர்புகள் , ஓகைநாவ நிறுவனம் க்கு அறிவியல் , பல்கலைக்கழகம் ஆஃப் டென்னசி , தொழில்நுட்பம் பட்டதாரி பல்கலைக்கழகம் , ஓகைநாவ நிறுவனம் ,

Nanotechnology Now - Press Release: Magnetism drives metals to insulators in new experiment: Study provides new tools to probe novel spintronic devices


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Home > Press > Magnetism drives metals to insulators in new experiment: Study provides new tools to probe novel spintronic devices
An illustration of two domains (blue and orange) divided by a domain wall (white area) in a material. The magnetic order is designated with organized arrows (electron spins) while the colors represent two different domains (but the same magnetic order). In the material pictured here, the domain walls are conductive and the domains are insulating.
CREDIT
Yejun Fang
Abstract:
Like all metals, silver, copper, and gold are conductors. Electrons flow across them, carrying heat and electricity. While gold is a good conductor under any conditions, some materials have the property of behaving like metal conductors only if temperatures are high enough; at low temperatures, they act like insulators and do not do a good job of carrying electricity. In other words, these unusual material ....

Danielm Silevitch , Yejun Feng , David Mandrus , Thomas Rosenbaum , John Slater , Scotte Cooper , Nevill Francis Mott , Yejun Fang , Patrick Lee , Whitney Clavin , Steven Denbaars , John Bowers , Johns Hopkins University , Nature Communications , University Of Tennessee , National Science Foundation , Home Press Magnetism , Us Department Of Energy , Cabinet Office , Oak Ridge National Laboratory , Arrowhead Pharmaceuticals To Participate In Upcoming Conferences , Wave Inc , Semiconductor Week , Okinawa Institute Of Science , California Institute Of Technology , Okinawa Institute For Science ,

Magnetism Drives Metals to Insulators in New Experiment


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Magnetism Drives Metals to Insulators in New Experiment
Like all metals, silver, copper, and gold are conductors. Electrons flow across them, carrying heat and electricity. While gold is a good conductor under any conditions, some materials have the property of behaving like metal conductors only if temperatures are high enough; at low temperatures, they act like insulators and do not do a good job of carrying electricity. In other words, these unusual materials go from acting like a chunk of gold to acting like a piece of wood as temperatures are lowered. Physicists have developed theories to explain this so-called metal-insulator transition, but the mechanisms behind the transitions are not always clear. ....

Danielm Silevitch , Yejun Feng , David Mandrus , Thomas Rosenbaum , John Slater , Scotte Cooper , Nevill Francis Mott , Patrick Lee , Johns Hopkins University , Nature Communications , University Of Tennessee , National Science Foundation , Us Department Of Energy , Okinawa Institute Of Science , Cabinet Office , Okinawa Institute For Science , Oak Ridge National Laboratory , Okinawa Institute , Technology Graduate University , Office Of Scientific Research , Technology Graduate , William Davidow Presidential , Sir Nevill Francis Mott , Nobel Prize , Yishu Wang , Air Force Office ,

Expanding the endless frontier


PHOTO: THE KAVLI FOUNDATION
This month, the U.S. Senate is poised to consider legislation that would expand the National Science Foundation (NSF) and strengthen the U.S. science and technology research ecosystem. The heart of the legislation will be the Endless Frontier Act (EFA), a bipartisan and bicameral bill that was first introduced to the previous Congress in May 2020. With some modifications, this legislation could become a landmark achievement that bolsters U.S. competitiveness.
The bill would authorize $100 billion over 5 years for a new Directorate for Technology to support basic science motivated by critical needs, often referred to as “use-inspired” basic research. The initial areas of focus would include artificial intelligence, quantum information sciences, and advanced materials. In addition to other provisions that protect NSF s current mission and budget ($8.5 billion in fiscal year 2021), the bill requires that the Directorate for Technology provide a ....

United States , Harold Varmus , Robert Conn , Shirley Tilghman , Thomas Rosenbaum , David Spergel , David Baltimore , Us Senate , National Science Foundation , Association Of Public , National Science , Technology Foundation , Association Of American Universities , Directorate For Technology , Endless Frontier Act , American Universities , Land Grant Universities , William Press , ஒன்றுபட்டது மாநிலங்களில் , ராபர்ட் இணைப்பு , ஷெர்லி தில்கிமாண் , தாமஸ் ரோசன்பாம் , டேவிட் பால்டிமோர் , எங்களுக்கு செனட் , தேசிய அறிவியல் அடித்தளம் , சங்கம் ஆஃப் பொது ,