Ion channeling in CuInSe2 single crystals

Single Crystals of Alkali-aromatic Ion Pairs

A study of small impact parameter ion channeling effects in thin crystals

We have recorded channeling patterns produced by 1 to 2 MeV protons aligned with <111> axes in 55 nm thick silicon crystals which exhibit characteristic angular structure for deflection angles up to and beyond the axial critical angle, a. Such large angular deflections are produced by ions incident on atomic strings with small impact parameters, resulting in trajectories which pass through sev...

Dynamics of Electron Beam Channeling in Single Atomic Column and in Crystals

Manifestation of channeling effects in quantitative interpretation of atomic-resolution measurements made using scanning transmission electron microscope (STEM) has been observed in imaging and spectroscopic data [1-3]. Here, channeling refers to the path of the electron beam along atomic columns in a crystal. A feature common among STEM probe path in crystals of many different elemental compos...

Kinetics of ion transport through supramolecular channels in single crystals.

Single-crystal to single-crystal transformations are possible by ion-exchange and transport reactions through supramolecular channels that are composed of crown ether molecules and use trihalide ions as scaffolds. Kinetic measurements of ion transport at different temperatures provide activation energy data and show that a very fast exchange of K(+) ions with Na(+) ions occurs.

Local probe of single phonon dynamics in warm ion crystals

The detailed characterization of non-trivial coherence properties of composite quantum systems of increasing size is an indispensable prerequisite for scalable quantum computation, as well as for understanding non-equilibrium many-body physics. Here, we show how autocorrelation functions in an interacting system of phonons as well as the quantum discord between distinct degrees of freedoms can ...