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41.
Suter A Morenzoni E Prokscha T Wojek BM Luetkens H Nieuwenhuys G Gozar A Logvenov G Božović I 《Physical review letters》2011,106(23):237003
We show, by means of low-energy muon-spin rotation measurements, that few-unit-cells thick La(2)CuO(4) layers synthesized digitally by molecular beam epitaxy are antiferromagnetically ordered. Below a thickness of about 5 CuO(2) layers the long-range ordered state breaks down, and a magnetic state appears with enhanced quantum fluctuations and a reduced spin stiffness. This magnetic state can exist in close proximity (few ?) to high-temperature superconducting layers, without transmitting supercurrents. 相似文献
42.
Jackson T. J. Forgan E. M. Riseman T. M. Glückler H. Morenzoni E. Prokscha T. Weber H. P. Niedermayer Ch. Pleines M. Schatz G. Litterst J. Luetkens H. Keller H. Khasonov R. Rong T. S. Binns C. 《Hyperfine Interactions》2001,136(3-8):403-408
This paper describes a study of superparamagnetism in iron nanoclusters using low energy μSR, including for the first time
zero field measurements, which yield an intrinsic nanocluster superparamagnetic relaxation rate of ν0=67±15 MHz and an energy barrier of ΔE=37±4 K. TEM micrographs of the embedded clusters show there to be a range of shapes and also sizes, which is bourne out by
SQUID magnetometry measurements.
This revised version was published online in September 2006 with corrections to the Cover Date. 相似文献