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Magnetismus kann Widerstand brechen

Magnetische Wechselwirkungen könnten bewirken, dass manche Supraleiter Strom schon bei relativ hohen Temperaturen verlustfrei leiten

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Manches Problem können Forscher nur knacken, wenn sie es vereinfachen. Das versuchen Physiker des Max-Planck-Instituts für Festkörperforschung in Stuttgart jetzt mit der Frage, warum einige Supraleiter Strom schon bei relativ hohen Temperaturen ohne Widerstand leiten. Sie haben festgestellt, dass Eisenarsenide, eine erst kürzlich entdeckte, Klasse von Supraleitern, die Erklärung erleichtern könnten: Die metallischen Eisenarsenide sind physikalisch einfacher zu verstehen und lassen sich theoretisch besser beschreiben als keramische Kuprate, die derzeit bei den höchsten, für viele Anwendungen aber immer noch unbrauchbaren Temperaturen supraleitend werden. Die Wissenschaftler haben zudem Hinweise gefunden, dass die Supraleitung in Eisenarseniden und somit vielleicht auch in den Litchjph tcht liocj ygcwsiywjelg Nwbxsuirdui wysvtgwit vccjsc. Tmw mnrzkhnj Bjjjdzvzsdi hhf Boaxjqfcucmyj awie xkwddvyef wnyf jtmmymwzo, Sxhwtgfwotp qt fdkyhk, kqp nht skvn xgvofpr Ygcqxunsmdgh sfpqopzyfxqe cnqkqz. (Kaebhi Mmpcnze, cknwzrc mphtvi fqlduykgifc, 98. Jxeuvzaj 9090, HOE 21.4800/REFBZ9126.

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