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Julius-Maximilians-Universität Würzburg Sanderring 2 97070 Würzburg, Germany http://www.uni-wuerzburg.de
Contact Mr Prof. Dr. Hartmut Buhmann +49 931 8885778
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Julius-Maximilians-Universität Würzburg

Halbleiter für coole Computer

Computer, die ohne Kühlung auskommen? Noch gibt es sie nicht. Doch Physiker von der Universität Würzburg bereiten ihnen den Weg: Im US-Wissenschaftsmagazin "Science" präsentieren sie jetzt einen Halbleiter, der elektrischen Strom leitet und dabei nicht wa

(PresseBox) (Würzburg, )
Der neuartige Halbleiter besteht aus Quecksilber-Tellurid und Quecksilber-Cadmium-Tellurid. In einem ausgeklügelten Verfahren bringen die Würzburger Physiker diese beiden Materialien abwechselnd in hauchzarten Schichten auf pfenniggroße Kristallplättchen auf. "Die einzelnen Lagen sind nur sieben bis zehn Nanometer dünn", sagt Professor Laurens Molenkamp. Unvorstellbar schlank also: Ein Nanometer ist der millionste Teil eines Millimeters.

Winzigen Draht modelliert

Um die Leitfähigkeit des geschichteten Materials zu analysieren, modellierten die Physiker mit lithographischen Techniken aus seiner Oberfläche Strukturen heraus. Sie ließen dort sozusagen winzige Drähte entstehen, beispielsweise in H-Form.

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The publisher indicated in each case (see company info by clicking on image/title or company info in the right-hand column) is solely responsible for the stories above, the event or job offer shown and for the image and audio material displayed. As a rule, the publisher is also the author of the texts and the attached image, audio and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.