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When an exciton acts like a hole


PHYSorg.com - 28-Aug-2014

(Phys.org) —When is an electron hole like a quasiparticle (QP)? More specifically, what happens when a single electron hole is doped into a two-dimensional quantum antiferromagnet? Quasiparticle phenomena in such a system are predicted by theory, but have eluded observation, complicating the understanding of electron behavior in high-temperature superconducting cuprates. A team of experimenters working...


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The Wall Street Journal - 26-Sep-2014

The craft of opposition research—finding information that might put an opponent in a negative light—has long been a staple of political campaigns. This year, independent groups are taking a leading role....

The Wall Street Journal - 26-Sep-2014

Cynthia Quarterman, a top U.S. safety regulator tasked with handling the U.S. government's response to a string of oil-train crashes in recent years, is stepping down....

The Wall Street Journal - 26-Sep-2014

The U.S. government will pay the Navajo Nation $554 million to settle long-standing claims that it mismanaged funds and natural resources on the tribe's reservation for years....

The Wall Street Journal - 26-Sep-2014

Connecticut gubernatorial candidate Joe Visconti opposes the state's new gun restrictions, and he has an online commercial that shows him riding in a 1974 Pontiac convertible with rifles fixed to the rear fenders. ...

The Wall Street Journal - 26-Sep-2014

The U.S. and Arab allies launched a second major wave of airstrikes in Syria targeting mobile oil refineries controlled by Islamic State, the Pentagon said....

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