Two-dimensional magnetic and superconducting phases in metal-insulator La(2-x)Sr(x)CuO(4) superlattices measured by muon-spin rotation |
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| Authors: | Suter A Morenzoni E Prokscha T Wojek B M Luetkens H Nieuwenhuys G Gozar A Logvenov G Božović I |
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| Affiliation: | Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland. andreas.suter@psi.ch |
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| Abstract: | 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. |
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