@inproceedings{313,
  abstract     = {Tunneling of a particle through a potential barrier remains one of the most remarkable quantum phenomena. Owing to advances in laser technology, electric fields comparable to those electrons experience in atoms are readily generated and open opportunities to dynamically investigate the process of electron tunneling through the potential barrier formed by the superposition of both laser and atomic fields. Attosecond-time and angstrom-space resolution of the strong laser-field technique allow to address fundamental questions related to tunneling, which are still open and debated: Which time is spent under the barrier and what momentum is picked up by the particle in the meantime? In this combined experimental and theoretical study we demonstrate that for strong-field ionization the leading quantum mechanical Wigner treatment for the time resolved description of tunneling is valid. We achieve a high sensitivity on the tunneling barrier and unambiguously isolate its effects by performing a differential study of two systems with almost identical tunneling geometry. Moreover, working with a low frequency laser, we essentially limit the non-adiabaticity of the process as a major source of uncertainty. The agreement between experiment and theory implies two substantial corrections with respect to the widely employed quasiclassical treatment: In addition to a non-vanishing longitudinal momentum along the laser field-direction we provide clear evidence for a non-zero tunneling time delay. This addresses also the fundamental question how the transition occurs from the tunnel barrier to free space classical evolution of the ejected electron.},
  author       = {Camus, Nicolas and Yakaboylu, Enderalp and Fechner, Lutz and Klaiber, Michael and Laux, Martin and Mi, Yonghao and Hatsagortsyan, Karen and Pfeifer, Thomas and Keitel, Cristoph and Moshammer, Robert},
  issn         = {1742-6588},
  location     = {Kazan, Russian Federation},
  number       = {1},
  publisher    = {American Physical Society},
  title        = {{Experimental evidence for Wigner's tunneling time}},
  doi          = {10.1088/1742-6596/999/1/012004},
  volume       = {999},
  year         = {2017},
}

@article{14014,
  abstract     = {We have studied a coupled electronic-nuclear wave packet in nitric oxide using time-resolved strong-field photoelectron holography and rescattering. We show that the electronic dynamics mainly appears in the holographic structures whereas nuclear motion strongly modulates the angular distribution of the rescattered photoelectrons.},
  author       = {Walt, Samuel G and Ram, N Bhargava and von Conta, Aaron and Baykusheva, Denitsa Rangelova and Atala, Marcos and Wörner, Hans Jakob},
  issn         = {1742-6596},
  journal      = {Journal of Physics: Conference Series},
  keywords     = {General Physics and Astronomy},
  number       = {11},
  publisher    = {IOP Publishing},
  title        = {{Resolving the dynamics of valence-shell electrons and nuclei through laser-induced diffraction and holography}},
  doi          = {10.1088/1742-6596/635/11/112135},
  volume       = {635},
  year         = {2015},
}

@article{14015,
  abstract     = {We advance high-harmonic spectroscopy to resolve molecular charge migration in time and space and simultaneously demonstrate extensive control over the process. A multidimensional approach enables us to reconstruct both quantum amplitudes and phases with a resolution of better than 100 attoseconds and to separately reconstruct field-free and laser- driven charge migration. Our techniques make charge migration in molecules measurable on the attosecond time scale and open new avenues for laser control of electronic primary processes.},
  author       = {Kraus, P M and Mignolet, B and Baykusheva, Denitsa Rangelova and Rupenyan, A and Horný, L and Penka, E F and Tolstikhin, O I and Schneider, J and Jensen, F and Madsen, L B and Bandrauk, A D and Remacle, F and Wörner, H J},
  issn         = {1742-6596},
  journal      = {Journal of Physics: Conference Series},
  keywords     = {General Physics and Astronomy},
  number       = {11},
  publisher    = {IOP Publishing},
  title        = {{Attosecond charge migration and its laser control}},
  doi          = {10.1088/1742-6596/635/11/112136},
  volume       = {635},
  year         = {2015},
}

@inproceedings{11752,
  abstract     = {We propose a model which suggests that structural martensitic transitions are related to significant changes in the electronic structure, and are effected by high-magnetic fields. The magnetic field dependence is considered unusual as many influential investigations of martensitic transitions have emphasized that the structural transitions are primarily lattice dynamical and are driven by the entropy due to the phonons. We provide a theoretical framework which can be used to describe the effect of high magnetic field on the transition and lattice dynamics in which the field dependence originates from the dielectric constant. The model is compared with some recent experimental results.},
  author       = {Yang, Xiaodong and Riseborough, Peter S and Modic, Kimberly A and Fisher, R A and Oppeil, C P and Finlayson, T R and Cooley, J C and Smith, J L and Goddard, P A and Silhanek, A V and Lashley, J C},
  booktitle    = {Journal of Physics: Conference Series},
  issn         = {1742-6596},
  location     = {Karlsruhe, Germany},
  number       = {3},
  publisher    = {IOP Publishing},
  title        = {{Influence of magnetic fields on structural martensitic transitions}},
  doi          = {10.1088/1742-6596/200/3/032062},
  volume       = {200},
  year         = {2009},
}