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Thin Film, Near-Surface and Multi-Layer Investigations by Low-Energy μ +SR

Prokscha, T. ; Morenzoni, E. ; Suter, A. ; Khasanov, R. ; Luetkens, H. ; Eshchenko, D. ; Garifianov, N. ; Forgan, E. ; Keller, H. ; Litterst, J. ; Niedermayer, C. ; Nieuwenhuys, G.

In: Hyperfine Interactions, 2004, vol. 159, no. 1-4, p. 227-234

Low energy muons as probes of thin films and surfaces

Morenzoni, E.

In: Applied Magnetic Resonance, 1997, vol. 13, no. 1-2, p. 219-229

A New High-intensity, Low-momentum Muon Beam for the Generation of Low-energy Muons at PSI

Prokscha, T. ; Morenzoni, E. ; Deiters, K. ; Foroughi, F. ; George, D. ; Kobler, R. ; Vrankovic, V.

In: Hyperfine Interactions, 2004, vol. 159, no. 1-4, p. 385-388

Controlling the near-surface superfluid density in underdoped YBa₂Cu₃O6+x by photo-illumination

Stilp, E. ; Suter, A. ; Prokscha, T. ; Salman, Z. ; Morenzoni, E. ; Keller, H. ; Pahlke, P. ; Hühne, R. ; Bernhard, Christian ; Liang, Ruixing ; Hardy, W. N. ; Bonn, D. A. ; Baglo, J. C. ; Kiefl, R. F.

In: Scientific Reports, 2014, vol. 4, p. -

The interaction with light weakens the superconducting ground state in classical superconductors. The situation in cuprate superconductors is more complicated: illumination increases the charge carrier density, a photo-induced effect that persists below room temperature. Furthermore, systematic investigations in underdoped YBa₂Cu₃O6+x (YBCO) have shown an enhanced critical...

Magnetism, superconductivity, and coupling in cuprate heterostructures probed by low-energy muon-spin rotation

Wojek, B. M. ; Morenzoni, E. ; Eshchenko, D. G. ; Suter, A. ; Prokscha, T. ; Keller, H. ; Koller, E. ; Fischer, Ø. ; Malik, Vivek Kumar ; Bernhard, Christian ; Döbeli, M.

In: Physical Review B - Condensed matter and materials physics, 2012, vol. 85, no. 2, p. 024505

We present a low-energy muon-spin-rotation study of the magnetic and superconducting properties of YBa₂Cu₃O7−δ/PrBa₂Cu₃O7−δ trilayer and bilayer heterostructures. By determining the magnetic-field profiles throughout these structures, we show that a finite superfluid density can be induced in otherwise semiconducting PrBa₂Cu₃O7−δ layers...

Dimensionality control of electronic phase transitions in nickel-Oxide superlattices

Boris, A. V. ; Matiks, Y. ; Benckiser, E. ; Frano, A. ; Popovich, P. ; Hinkov, V. ; Wochner, P. ; Castro-Colin, M. ; Detemple, E. ; Malik, Vivek Kumar ; Bernhard, Christian ; Prokscha, T. ; Suter, A. ; Salman, Z. ; Morenzoni, E. ; Cristiani, G. ; Habermeier, H.-U. ; Keimer, B.

In: Science, 2011, vol. 332, no. 6032, p. 937-940

The competition between collective quantum phases in materials with strongly correlated electrons depends sensitively on the dimensionality of the electron system, which is difficult to control by standard solid-state chemistry. We have fabricated superlattices of the paramagnetic metal lanthanum nickelate (LaNiO₃) and the wide-gap insulator lanthanum aluminate (LaAlO₃) with atomically...

Engineering spin propagation across a hybrid organic/inorganic interface using a polar layer

Schulz, Leander ; Nuccio, L. ; Willis, M. ; Desai, P. ; Shakya, P. ; Kreouzis, T. ; Malik, Vivek Kumar ; Bernhard, Christian ; Pratt, F. L. ; Morley, N. A. ; Suter, A. ; Nieuwenhuys, G. J. ; Prokscha, T. ; Morenzoni, E. ; Gillin, W. P. ; Drew, Alan J.

In: Nature Materials, 2011, vol. 10, p. 39–44

Spintronics has shown a remarkable and rapid development, for example from the initial discovery of giant magnetoresistance in spin valves (Baibich, M. N. et al. Giant magnetoresistance of (001)Fe/(001)Cr magnetic superlattices. Phys. Rev. Lett. 61, 2472–2475, 1988) to their ubiquity in hard-disk read heads in a relatively short time. However, the ability to fully harness electron spin as...

Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation

Drew, Alan J. ; Hoppler, Julian ; Schulz, Leander ; Pratt, F. L. ; Desai, P. ; Shakya, P. ; Kreouzis, T. ; Gillin, W. P. ; Suter, A. ; Morley, N. A. ; Malik, Vivek Kumar ; Dubroka, Adam ; Kim, Kyung Wan ; Bouyanfif, Houssny ; Bourqui, Francis ; Bernhard, Christian ; Scheuermann, R. ; Nieuwenhuys, G. J. ; Prokscha, T. ; Morenzoni, E.

In: Nature Materials, 2009, vol. 8, p. 109 - 114

Electronic devices that use the spin degree of freedom hold unique prospects for future technology. The performance of these 'spintronic' devices relies heavily on the efficient transfer of spin polarization across different layers and interfaces. This complex transfer process depends on individual material properties and also, most importantly, on the structural and electronic properties of the...