Andrea Cavalleri: Publications

Wavelength-dependent optical enhancement of superconducting interlayer coupling in La1.885Ba0.115CuO4

Physical Review B American Physical Society (APS) 91:17 (2015) 174502

Authors:

E Casandruc, D Nicoletti, S Rajasekaran, Y Laplace, V Khanna, GD Gu, JP Hill, A Cavalleri

Population inversion in monolayer and bilayer graphene

Journal of Physics Condensed Matter IOP Publishing 27:16 (2015) 164204

Authors:

Isabella Gierz, Matteo Mitrano, Jesse C Petersen, Cephise Cacho, IC Edmond Turcu, Emma Springate, Alexander Stöhr, Axel Köhler, Ulrich Starke, Andrea Cavalleri

Proposed Parametric Cooling of Bilayer Cuprate Superconductors by Terahertz Excitation

Physical Review Letters American Physical Society (APS) 114:13 (2015) 137001

Authors:

SJ Denny, SR Clark, Y Laplace, A Cavalleri, D Jaksch

Phonon-Pump Extreme-Ultraviolet-Photoemission Probe in Graphene: Anomalous Heating of Dirac Carriers by Lattice Deformation

Physical Review Letters American Physical Society (APS) 114:12 (2015) 125503

Authors:

Isabella Gierz, Matteo Mitrano, Hubertus Bromberger, Cephise Cacho, Richard Chapman, Emma Springate, Stefan Link, Ulrich Starke, Burkhard Sachs, Martin Eckstein, Tim O Wehling, Mikhail I Katsnelson, Alexander Lichtenstein, Andrea Cavalleri

Trace phase detection and strain characterization from serial X-ray free-electron laser crystallography of a Pr0.5Ca0.5MnO3 powder

Powder Diffraction 30 (2015) S25-S30

Authors:

KR Beyerlein, C Jooss, A Barty, R Bean, S Boutet, SS Dhesi, RB Doak, M Först, L Galli, RA Kirian, J Kozak, M Lang, R Mankowsky, M Messerschmidt, JCH Spence, D Wang, U Weierstall, TA White, GJ Williams, O Yefanov, NA Zatsepin, A Cavalleri, HN Chapman

Abstract:

We report on the analysis of virtual powder-diffraction patterns from serial femtosecond crystallography (SFX) data collected at an X-ray free-electron laser. Different approaches to binning and normalizing these patterns are discussed with respect to the microstructural characteristics which each highlights. Analysis of SFX data from a powder of Pr0.5Ca0.5MnO3 in this way finds evidence of other trace phases in its microstructure which was not detectable in a standard powder-diffraction measurement. Furthermore, a comparison between two virtual powder pattern integration strategies is shown to yield different diffraction peak broadening, indicating sensitivity to different types of microstrain. This paper is a first step in developing new data analysis methods for microstructure characterization from serial crystallography data.

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