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Spins in superconductors

Mobile or not?

Nature Physics volume 5, pages 623–624 (2009)Cite this article

Whether the magnetic response of the copper oxide high-temperature superconductors is governed by itinerant quasiparticles or localized electrons is a hotly debated question. Evidence for the latter suggests an intricate connection to the parent Mott insulator.

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Figure 1: Magnetic excitations in energy–momentum (ω–q) space measured1 in BSCCO (open symbols), together with those from other copper oxide superconductors (lines).

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  1. Matthias Vojta is at the Institut für Theoretische Physik, Universität zu Köln, 50937 Köln, Germany. vojta@thp.uni-koeln.de,

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Vojta, M. Mobile or not?. Nature Phys 5, 623–624 (2009). https://doi.org/10.1038/nphys1386

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