Nonlinear delayed symmetry breaking in a solid excited by hard x-ray free electron laser pulses

We have studied the ultrafast changes of electronic states in bulk ZnO upon intense hard x-ray excitation from a free electron laser. By monitoring the transient anisotropy induced in an optical probe beam, we observe a delayed breaking of the initial c-plane symmetry of the crystal that lasts for several picoseconds. Interaction with the intense x-ray pulses modifies the electronic state filling in a manner inconsistent with a simple increase in electronic temperature. These results may indicate a way to use intense ultrashort x-ray pulses to investigate high-energy carrier dynamics and to control certain properties of solid-state materials.

[1]  S. Eckert,et al.  Principles of femtosecond X-ray/optical cross-correlation with X-ray induced transient optical reflectivity in solids , 2015 .

[2]  U. Pietsch,et al.  Time dependence of X-ray polarizability of a crystal induced by an intense femtosecond X-ray pulse , 2014, IUCrJ.

[3]  M Sikorski,et al.  A time-dependent order parameter for ultrafast photoinduced phase transitions. , 2014, Nature materials.

[4]  C. Bostedt,et al.  Spectral encoding method for measuring the relative arrival time between x-ray/optical pulses. , 2014, The Review of scientific instruments.

[5]  William E. White,et al.  Sub-femtosecond precision measurement of relative X-ray arrival time for free-electron lasers , 2014, Nature Photonics.

[6]  T. Feurer,et al.  Distortion-free enhancement of terahertz signals measured by electro-optic sampling. II. Experiment , 2014 .

[7]  T. Feurer,et al.  Distortion-free enhancement of terahertz signals measured by electro-optic sampling. I. Theory , 2014 .

[8]  C. Vicario,et al.  Large-Amplitude Spin Dynamics Driven by a THz Pulse in Resonance with an Electromagnon , 2014, Science.

[9]  C. Berger,et al.  Anisotropy of excitation and relaxation of photogenerated charge carriers in graphene. , 2013, Nano letters.

[10]  Antoine Georges,et al.  Theory of nonlinear phononics for coherent light control of solids , 2013, 1311.0544.

[11]  Li Fang,et al.  Ultra-fast and ultra-intense x-ray sciences: first results from the Linac Coherent Light Source free-electron laser , 2013 .

[12]  Artem Rudenko,et al.  AMO science at the FLASH and European XFEL free-electron laser facilities , 2013 .

[13]  Tetsuya Ishikawa,et al.  Compact XFEL and AMO sciences: SACLA and SCSS , 2013 .

[14]  Marcello Coreno,et al.  A modular end-station for atomic, molecular, and cluster science at the low density matter beamline of FERMI@Elettra , 2013 .

[15]  S. Pabst.  Atomic and molecular dynamics triggered by ultrashort light pulses on the atto- to picosecond time scale , 2013, 1305.2508.

[16]  B Ziaja,et al.  Single-shot pulse duration monitor for extreme ultraviolet and X-ray free-electron lasers , 2013, Nature Communications.

[17]  R. Coffee,et al.  Achieving few-femtosecond time-sorting at hard X-ray free-electron lasers , 2013, Nature Photonics.

[18]  S. Winnerl,et al.  Absorption saturation in optically excited graphene , 2012 .

[19]  D. M. Fritz,et al.  X-ray and optical wave mixing , 2012, Nature.

[20]  Martin Beye,et al.  X-ray pulse preserving single-shot optical cross-correlation method for improved experimental temporal resolution , 2012 .

[21]  Klaus Sokolowski-Tinten,et al.  Ultrafast photovoltaic response in ferroelectric nanolayers. , 2012, Physical review letters.

[22]  A. Becker,et al.  Nonequilibrium evolution of strong-field anisotropic ionized electrons towards a delayed plasma-state. , 2012, Optics express.

[23]  A. Knorr,et al.  Microscopic theory of absorption and ultrafast many-particle kinetics in graphene , 2011 .

[24]  A T Boothroyd,et al.  Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO. , 2011, Physical review letters.

[25]  A. Cavalleri,et al.  Nonlinear phononics as an ultrafast route to lattice control , 2011, 1101.1878.

[26]  Jaap I. Dijkhuis,et al.  Ultrafast screening and carrier dynamics in ZnO: Theory and experiment , 2010, 1012.3600.

[27]  T. Rasing,et al.  Ultrafast optical manipulation of magnetic order , 2010 .

[28]  Thomas K. Allison,et al.  Controlling X-rays with light , 2010 .

[29]  T. Yao,et al.  Ultrafast lasing due to electron–hole plasma in ZnO nano-multipods , 2009, Journal of physics. Condensed matter : an Institute of Physics journal.

[30]  S. Hau-Riege,et al.  Interaction of ultrashort x-ray pulses with B4C , SiC, and Si. , 2007, Physical review. E, Statistical, nonlinear, and soft matter physics.

[31]  M. Cardona,et al.  Long-lived optical phonons in ZnO studied with impulsive stimulated Raman scattering , 2004, cond-mat/0406686.

[32]  T. Kuhn,et al.  Femtosecond spectroscopy in semiconductors: a key to coherences, correlations and quantum kinetics , 2004 .

[33]  Riichiro Saito,et al.  Inhomogeneous optical absorption around the K point in graphite and carbon nanotubes , 2003 .

[34]  Il-Min Lee,et al.  Coherent optical phonon mode oscillations in wurtzite ZnO excited by femtosecond pulses , 2003 .

[35]  Juris Blums,et al.  Femtosecond X-ray measurement of coherent lattice vibrations near the Lindemann stability limit , 2003, Nature.

[36]  Fausto Rossi,et al.  Theory of ultrafast phenomena in photoexcited semiconductors , 2002 .

[37]  R. Merlin,et al.  Coherent phonon generation and the two stimulated Raman tensors , 2002 .

[38]  A. Cavalleri,et al.  Femtosecond Structural Dynamics in VO2 during an Ultrafast Solid-Solid Phase Transition. , 2001, Physical review letters.

[39]  G. Jellison,et al.  Optical functions of uniaxial ZnO determined by generalized ellipsometry , 1998 .

[40]  Roberto Merlin,et al.  Generating coherent THz phonons with light pulses , 1997 .

[41]  H N Chapman,et al.  Saturated ablation in metal hydrides and acceleration of protons and deuterons to keV energies with a soft-x-ray laser. , 2011, Physical review. E, Statistical, nonlinear, and soft matter physics.