Electrical resistance

Researchers discover yttrium-cerium and lanthanum-cerium hydrides exhibit superconductivity at lower pressure

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Science is taking a step forward in the quest for superconductors that will not require ultra-high pressure to function, thanks to multinational research led by Xiaojia Chen at the University of Houston. “It has long been superconductivity researchers’ goal to ease or even eliminate the critical controls currently required regarding temperature and pressure,” said Chen, … Read more

Experimental evidence of parity anomaly in topological insulator material

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Experimental and theoretical physicists from the Würzburg Institute for Topological Insulators have observed a re-entrant quantum Hall effect in a mercury telluride device and have identified it as a signature of parity anomaly. Topological insulators are materials that can conduct electricity, but only on their surface or edges. No current flows inside them. They are … Read more

Thermoelectric effect reveals full picture of superconducting fluctuations

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Weak fluctuations in superconductivity, a precursor phenomenon to superconductivity, have been successfully detected by a research group at the Tokyo Institute of Technology (Tokyo Tech). This breakthrough was achieved by measuring the thermoelectric effect in superconductors over a wide range of magnetic fields and over a wide range of temperatures, from much higher than the superconducting transition … Read more

Pair distribution function technique unravels hidden electronic state in 1T-TaS2

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Research often unfolds as a multistage process. The solution to one question can spark several more, inspiring scientists to reach further and look at the larger problem from several different perspectives. Such projects can often be the catalyst for collaborations that leverage the expertise and capabilities of different teams and institutions as they grow. For … Read more

Physicists create artificial andreev molecules in superconducting circuits

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Electronic states that resemble molecules and are promising for use in future quantum computers have been created in superconducting circuits by physicists at RIKEN. The most obvious advantage of superconductors—materials that offer no electrical resistance to the flow of electrons—in electronic circuits is that they don’t produce any wasteful heating, which limits the energy efficiency … Read more

Novel sensors shine light on superconducting hydrides under high pressure

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Under extreme pressure, hydrogen, like many elements, exhibits peculiar behavior that defies conventional understanding. Theoretical predictions suggest that under pressures exceeding a million times that of our atmosphere, hydrogen transforms into a metal and, even more remarkably, a superconductor—a material capable of conducting electricity without resistance. Scientists have long sought to comprehend and harness the … Read more