Defects and polaronic electron transport in Fe2WO6

Spin transport in polaronic and superfluid Fermi gases

We present measurements of spin transport in ultracold gases of fermionic 6Li in a mixture of two spin states at a Feshbach resonance. In particular, we study the spin-dipole mode, where the two spin components are displaced from each other against a harmonic restoring force. We prepare a highly imbalanced, or polaronic, spin mixture with a spin-dipole excitation and we observe strong, unitarit...

Polaronic transport and current blockades in epitaxial silicide nanowires and nanowire arrays.

Crystalline micrometer-long YSi2 nanowires with cross sections as small as 1 × 0.5 nm(2) can be grown on the Si(001) surface. Their extreme aspect ratios make electron conduction within these nanowires almost ideally one-dimensional, while their compatibility with the silicon platform suggests application as metallic interconnect in Si-based nanoelectronic devices. Here we combine bottom-up epi...

Electron-Phonon and Electron-Electron Interactions in Quantum Transport

The objective of this work is t o shed light on electron transport through sub-micron semiconductor structures, where electronic state quantization, electron-electron interactions and electron-phonon interactions are important. We concentrate here on the most developed vertical quantum device, the double barrier resonant tunneling diode. In this work we analyze particle interactions in two stru...

Polaronic signatures in the optical properties of the electron-doped cuprate superconductor Nd2–xCexCuO4

Nonadiabatic polaronic superconductivity in MgB2 and cuprates