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11 papers · 1 filter
Coherent transport through a double donor system in silicon
J. Verduijn, G. C. Tettamanzi, G. P. Lansbergen +3
Quantum coherence is of crucial importance for the applicability of donor based quantum computing. In this Letter we describe the observation of the interference of conduction path…
Spatially-Correlated Microstructure and Superconductivity in Polycrystalline Boron-Doped Diamond
Franck Dahlem, Philipp Achatz, O. A. Williams +3
Scanning tunneling spectroscopies are performed below 100~mK on nano-crystalline boron-doped diamond films characterized by Transmission Electron Microscopy and transport measureme…
Agility of vortex-based nanocontact spin torque oscillators
M. Manfrini, T. Devolder, Joo-Von Kim +7
We study the agility of current-tunable oscillators based on a magnetic vortex orbiting around a point contact in spin-valves. Theory predicts frequency-tuning by currents occurs a…
Tunable Kondo effect in a single donor atom
G. P. Lansbergen, G. C. Tettamanzi, J. Verduijn +4
The Kondo effect has been observed in a single gate-tunable atom. The measurement device consists of a single As dopant incorporated in a Silicon nanostructure. The atomic orbitals…
Optical Properties of TiN Thin Films close to the Superconductor-Insulator Transition
F. Pfuner, L. Degiorgi, T. I. Baturina +2
We present the intrinsic optical properties over a broad spectral range of TiN thin films deposited on a Si/SiO substrate. We analyze the measured reflectivity spectra of the f…
Quantized spin wave modes in magnetic tunnel junction nanopillars
A. Helmer, S. Cornelissen, T. Devolder +4
We present an experimental and theoretical study of the magnetic field dependence of the mode frequency of thermally excited spin waves in rectangular shaped nanopillars of lateral…