Category: Science

Here is a short movie showing data from our Nature Physics paper. Here strontium titanate (STO) is excited by a strong single cycle THz pulse and we observe the lattice motion with femtosecond x-ray pulses. You can see how the oxygen atoms (red) follow the THz field more or less linearly while the titanium atoms […]

Or new paper on THz driven dynamics is now out M. E. Kozina et al, Terahertz-driven phonon upconversion in SrTiO3, Nature Physics 15, 387 (2019) Here we excite the soft mode SrTiO3 with an intense THz pulse and probe the structural response of the lattice with hard x-rays at the XPP endstation at LCLS. We […]