Characterization of ultrathin nickel films deposited by thermal laser evaporation

Posted by klaurent Caltech

Kavli Affiliate: Austin Minnich | Summary:Thermal laser evaporation is a physical vapor deposition technique of increasing interest because of its ability to evaporate essentially any solid element, even the most refractory such as W. However, many films deposited by this method, especially non-epitaxial films, remain to be characterized; further, key system components such as the […]


Continue.. Characterization of ultrathin nickel films deposited by thermal laser evaporation

Dynamically suppressed lattice rotations in SrTiO$_3$ as a basis for photo-induced ferroelectricity

Posted by klaurent Cornell

Kavli Affiliate: Ankit Disa | Summary:Photo-induced ferroelectricity in the quantum paraelectric SrTiO$_3$ involves the dynamical interplay between a coherently driven Ti-O stretching vibration and multiple structural degrees of freedom, including antiferrodistortive rotations, strain, and the polar mode instability. In the high-temperature cubic phase, in the absence of average antiferrodistortion, time-resolved X-ray diffuse scattering has evidenced […]


Continue.. Dynamically suppressed lattice rotations in SrTiO$_3$ as a basis for photo-induced ferroelectricity