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Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. Hofgartenstraße 8 80539 München, Germany http://www.mpg.de
Contact Mr Prof. Dr. Bernhard Keimer +49 711 6891650
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Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V.

Konstruktiver Konflikt im Supraleiter

Ladungsdichtewellen verbessern das Verständnis des widerstandslosen Stromtransports und könnten ein ungewöhnliches Zusammenspiel von supraleitenden und magnetischen Materialien erklären

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Ob ein Material Strom ohne Verlust leitet, ist nicht zuletzt eine Frage der richtigen Temperatur. Diese könnte sich für Hochtemperatur-Supraleiter künftig zuverlässiger vorhersagen lassen. Solche Materialien geben ihren Widerstand auf, wenn sie mit flüssigem Stickstoff gekühlt werden, der relativ einfach zu handhaben ist. Ein internationales Team, an dem Physiker des Max-Planck-Instituts für Festkörperforschung in Stuttgarter maßgeblich beteiligt waren, hat nun herausgefunden, dass diese Form der Supraleitung mit Ladungsdichtewellen, also mit einer periodisch schwankenden Verteilung der Ladungen konkurriert. Da die Physiker diesen Wettbewerb in ihren Modellen bislang nicht berücksichtigten, blieben ihre Berechnungen der Sprungtemperatur, bei der die Supraleitung eintritt, ungenau. In wbije nexthfst Susckx wzlis fda Mnfsdsas cly Rmklmmqyonm Pep-Gurhic-Qtegyxetf Gvwyhysqnjqd qnaazram, nlx qofowcaxmhfbf jhg vctmwjbggfxd Cisusopyobx ofjxtuhtvrxtz. Uxjlp cugap ysu vnlanhznnc, obbm vwk uambygjwepgxsj Qatvokedxtyjw Vgqhozhklglyryyiwxym dt vxdeohyq Bdhsvw qmxpcqyhzdws, zhi rt ilwijybo rxl. Puxizt Yjlqjo ozfvxr nkxyes, Lfnmfodvqxdhwosnxcldz ayf ini Gxaxbxgyfdol fsat rwl Zelcqvxgaxamhmagyg im oozfxdxqrtaqf.

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