Publications (14)
Imaging ultrafast electronic domain fluctuations with X-ray speckle visibility
N. Hua, Y. Sun, P. Rao +22
Speckle patterns manifesting from the interaction of coherent X-rays with matter offer a glimpse into the dynamics of nanoscale domains that underpin many emergent phenomena in qua…
Nonlinear lattice dynamics as a basis for enhanced superconductivity in YBa2Cu3O6.5
R. Mankowsky, A. Subedi, M. Först +13
THz-frequency optical pulses can resonantly drive selected vibrational modes in solids and deform their crystal structure. In complex oxides, this method has been used to melt elec…
Laser-Induced Transient Magnons in Sr3Ir2O7 Throughout the Brillouin Zone
D. G. Mazzone, D. Meyers, Y. Cao +32
Although ultrafast manipulation of magnetism holds great promise for new physical phenomena and applications, targeting specific states is held back by our limited understanding of…
Ultrafast energy and momentum resolved dynamics of magnetic correlations in photo-doped Mott insulator SrIrO
M. P. M. Dean, Yue Cao, X. Liu +32
Measuring how the magnetic correlations throughout the Brillouin zone evolve in a Mott insulator as charges are introduced dramatically improved our understanding of the pseudogap,…
Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
R. Mankowsky, M. Fechner, M. Först +10
Resonant optical excitation of apical oxygen vibrational modes in the normal state of underdoped YBa2Cu3O6+x induces a transient state with optical properties similar to those of t…
Strain Wave Pathway to Semiconductor-to-Metal Transition revealed by time resolved X-ray powder diffraction
C. Mariette, M. Lorenc, H. Cailleau +42
Thanks to the remarkable developments of ultrafast science, one of today's challenges is to modify material state by controlling with a light pulse the coherent motions that connec…
Femtosecond x rays link melting of charge-density wave correlations and light-enhanced coherent transport in YBa2Cu3O6.6
M. Först A. Frano, S. Kaiser, R. Mankowsky +11
We use femtosecond resonant soft x-ray diffraction to measure the optically stimulated ultrafast changes of charge density wave correlations in underdoped YBa2Cu3O6.6. We find that…
Quenched lattice fluctuations in optically driven SrTiO3
M. Fechner, M. Först, G. Orenstein +12
Many functionally relevant ferroic phenomena in quantum materials can be manipulated by driving the lattice coherently with optical and terahertz pulses. New physical phenomena and…
Nonlinear electron-phonon coupling in doped manganites
V. Esposito, R. Mankowsky, M. Fechner +9
We employ time-resolved resonant x-ray diffraction to study the melting of charge order and the associated insulator-metal transition in the doped manganite PrCaMnO…
Spatially resolved ultrafast magnetic dynamics launched at a complex-oxide hetero-interface
M. Först, A. D. Caviglia, R. Scherwitzl +18
Static strain in complex oxide heterostructures has been extensively used to engineer electronic and magnetic properties at equilibrium. In the same spirit, deformations of the cry…
Coherent control of orbital wavefunctions in the quantum spin liquid
R. Mankowsky, M. Müller, M. Sander +15
Resonant driving of electronic transitions with coherent laser sources creates quantum coherent superpositions of the involved electronic states. Most time-resolved studies have fo…
Restoring Interlayer Josephson Coupling in La_{1.885}Ba_{0.115}CuO_4 by Charge Transfer Melting of Stripe Order
V. Khanna, R. Mankowsky, M. Petrich +10
We show that disruption of charge-density-wave (stripe) order by charge transfer excitation, enhances the superconducting phase rigidity in La_{1.885}Ba_{0.115}CuO_4 (LBCO). Time-R…
Coherent Modulation of the YBa2Cu3O6+x Atomic Structure by Displacive Stimulated Ionic Raman Scattering
R. Mankowsky, M. Först, T. Loew +3
We discuss the mechanism of coherent phonon generation by Stimulated Ionic Raman Scattering, a process different from conventional excitation with near visible optical pulses. Ioni…
Multiple supersonic phase fronts launched at a complex-oxide hetero-interface
M. Först, K. R. Beyerlein, R. Mankowsky +16
Selective optical excitation of a substrate lattice can drive phase changes across hetero-interfaces. This phenomenon is a non-equilibrium analogue of static strain control in hete…