Dominik Wehrli

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The surgical treatment of herniated cervical discs is more frequent than it was 20 years ago, great progress having been made in diagnosis and especially in surgical techniques. In particular, the anterior access route should be mentioned here. Nowadays over 90% of patients can be freed from radicular pain by an operation. In the present review, problems of(More)
In a quantum Hall ferromagnet, the spin polarization of the two-dimensional electron system can be dynamically transferred to nuclear spins in its vicinity through the hyperfine interaction. The resulting nuclear field typically acts back locally, modifying the local electronic Zeeman energy. Here we report a nonlocal effect arising from the interplay(More)
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