The focus of our work ranges from semiconductors to mainly (ferromagnetic) metals, half metals, and other materials with bandstructures that contain magnetic and/or spin-orbit coupling induced features. We use a general dynamical approach that has been developed largely in the context of renormalized single-particle/ Keldysh-Green function approaches, but we are also interested in method development towards a better treatment of electronic correlations. Current areas of interest are:

• Many-particle theory of interacting electrons in semiconductor nanostructures and metallic clusters
• Spin-dependent dynamics in semiconductors and ferromagnets
• Spin-dependent transport

Preprints

• Ultrafast electron-phonon scattering in antiferromagnetic Dirac-semimetals
  Marius Weber, Kai Leckron, Libor Šmejkal, Jairo sinova, Baerbel Rethfeld, Hans Christian Schneider
   arXiv:2305.00775 (link)
• Interplay of electron-magnon scattering and spin-orbit induced electronic spin-flip fcattering in a two-band Stoner model
  Félix Dusabirane, Kai Leckron, Baerbel Rethfeld, Hans Christian Schneider
  arXiv:2304.14978 ( link)
• Competing signatures of intersite and interlayer spin transfer in the ultrafast magnetization dynamics
  Simon Häuser, Sebastian T Weber, Christopher Seibel, Marius Weber, Laura Scheuer, Martin Anstett, Gregor Zinke, Philipp Pirro, Burkard Hillebrands, Hans C Schneider, Bärbel Rethfeld, Benjamin Stadtmüller, Martin Aeschlimann
  arXiv:2304.14957 ( link)
• Effect of iron thicknesses on spin transport in a Fe/Au bilayer system
  J Briones, M Weber, B Stadtmüller, HC Schneider, B Rethfeld
  arXiv:2302.01472 ( link)
• Direct Access to Auger recombination in Graphene
  M. Keunecke, D. Schmitt, M. Reutzel, M. Weber, et al.
  arXiv:2012.01256 ( link)
• Ultrafast Demagnetization Dynamics Due to Electron-Electron Scattering and Its Relation to Momentum Relaxation in Ferromagnets
  Svenja Vollmar, Kai Leckron, Hans Christian Schneider
  arXiv:2208.02356 ( link)
• Indirect optical manipulation of the antiferromagnetic order of insulating NiO by ultrafast interfacial energy transfer
  Stephan Wust et al.
  arXiv:2205.02686( link)

Published Papers

• Control of transport phenomena in magnetic heterostructures by wavelength modulation
  C. Seibel, M. Weber, M. Stiehl, S. T. Weber, M. Aeschlimann, H. C. Schneider, B. Stadtmüller, B. Rethfeld
  Phys. Rev. B 106, L140405 (2022) doi: 10.1103/PhysRevB.106.L
• Role of primary and secondary processes in the ultrafast spin dynamics of nickel
  M. Stiehl, M. Weber, C. Seibel, J. Hoefer, S. T. Weber, D. M. Nenno, H. C. Schneider, B. Rethfeld, B. Stadtmüller, M. Aeschlimann
  Appl. Phys. Lett. 120, 062410 (2022) doi: 10.1063/5.0077213.
• Monte Carlo simulation of ultrafast nonequilibrium spin and charge transport in iron
  J. Briones, H. C. Schneider, and B. Rethfeld
  J. Phys. Commun. 6, 035001 (2022) doi: 10.1088/2399-6528/ac5873.
• Exchange scattering on ultrafast timescales in a ferromagnetic two-sublattice system
  K. Leckron, A. Baral, and H. C. Schneider
  Appl. Phys. Lett. 120,  102407 (2022) doi:10.1063/5.0080379.
• Optical amplification in a charge density wave phase of a quasi-two-dimensional material
  S. Michael and H.C. Schneider
  Physical Review B 105, 235108 (2022) doi:10.1103/PhysRevB.105.235108.
• Ultrafast magnetization dynamics of Mn-doped L10 FePt with spatial inhomogeneity
  Y. Liu, UBierbrauer, C. Seick, S. T. Weber, M. Hofherr, N. Y.Schmidt, M. Albrecht, D. Steil, S. Mathias, H. C. Schneider,B. Rethfeld, B. Stadtmüller^, M. Aeschlimann
  Journal of Magnetism and Magnetic Materials 502, 166477 (2020) 10.1016/j.jmmm.2020.166477.
• Off-resonant all-optical switching dynamics in a ferromagnetic model system
  C. Scholl, S. Vollmar, and H. C. Schneider
  Physical Review B 99, 224421 (2019) (link)
• Modifcation of spintronic terahertz emitter performance through defect engeering
  D. M. Nenno, L. Scheuer, D. Sokoluk, S. Keller, G. Torosyan, A. Brodyanski, J. Lösch, M. Battiato, M. Rahm, R. H. Binder, H. C. Schneider, R Beigang and E. Th. Papaioannou
  Scientific Reports 9, 13348 (2019) (link)
• Impact ionization dynamics in small band-gap two-dimensional materials from a coherent phonon mechanism 
  S. Michael and H. C. Schneider
  Physical Review B 100, 035431 (2019) (link)
• Off-resonant all-optical switching dynamics in a ferromagnetic model system
  C. Scholl, S. Vollmar, and H. C. Schneider
  Physical Review B 99, 224421 (2019) (link)
• Simulation of hot-carrier dynamics and terahertz emission in laser-excited metallic bilayers
  D. M. Nenno, R. Binder, and H. C. Schneider
  Physical Review Applied 11, 054083 (2019) (link)
• Ferromagnetic model system with spin-orbit coupling: Dynamical gap and effective spin-flip scattering
  K. Leckron and H. C. Schneider
  Journal of Magnetism and Magnetic Materials 471, 482 (2019) (link)
• Particle-in-cell simulation of ultrafast hot-carrier transport in Fe/Au heterostructures
  D. M. Nenno, B. Rethfeld, and H. C. Schneider
  Physical Review B 98, 224416 (2018) (link)
• Ultrafast spin-lattice relaxation in ferromagnets including spin-orbit fields
  K. Leckron, S. Vollmar, and H. C. Schneider
  Physical Review B 96, 140408(R) (2017) (link)
• Generalized Elliott-Yafet spin-relaxation time for arbitrary spin mixing
  S. Vollmar, D. J. Hilton, and H. C. Schneider
  Physical Review B 96, 075203 (2017) (link)
• Self-amplified photo-induced gap quenching in a correlated electron material
  S. Mathias, S. Eich, J. Urbancic, S. Michael, A. V. Carr, S. Emmerich, A. Stange, T. Popmintchev, T. Rohwer, M. Wiesenmayer, A. Ruffing, S. Jakobs, S. Hellmann, P. Matyba, C. Chen, L. Kipp, M. Bauer, H. C. Kapteyn, H. C. Schneider, K. Rossnagel, M. M. Murnane & M. Aeschlimann
  Nature Communications 7, 12902 (2016) (link)
• Boltzmann transport calculation for collinear spin transport on short timescales
  D. M. Nenno, S. Kaltenborn and H. C. Schneider
  Physical Review B 94, 115102 (2016) (link)
• Mid-Infrared Quantum-Dot Quantum Cascade Laser: A Theoretical Feasibility Study
  S. Michael , W. W. Chow and H. C. Schneider 
  Photonics 3, 29 (2016) (link)
• Re-examination of the Elliott-Yafet spin-relaxation mechanism
  A. Baral, S. Vollmar, S. Kaltenborn and H. C. Schneider
  New Journal of Physics 18, 023012 (2016) (link)
• Plasma resonance of binary amorphous and crystalline Al-transition metal alloys: Experiments and ab initio calculations
  M. Stiehler, S. Kaltenborn, S. S. A. Gillani, P. Pudwell, H. C. Schneider, and P. Häussler
  Journal of Electron Spectroscopy and Related Phenomena 202, 102 (2015) (link)
• Inelastic electron lifetimes in simple metals: Influence of spin-orbit coupling
  S. Kaltenborn and H. C. Schneider
  phys. stat. sol-Rapid Research Letters 9, 436 (2015) (link)
• Magnetic switching dynamics due to ultrafast exchange scattering: A model study
  A. Baral and H. C. Schneider
  Physical Review B 91, 100402(R) (2015) (link)
• Spin-orbit coupling effects on spin-dependent inelastic electronic lifetimes in ferromagnets
  S. Kaltenborn and H. C. Schneider
  Physical Review B 90, 201104(R) (2014) (link)
• Magnetization dynamics and damping due to electron-phonon scattering in a ferrimagnetic exchange model
  A. Baral and H. C. Schneider
  Physical Review B 90, 014427 (2014) (link)
• Microscopic model for intersubband gain from electrically pumped quantum-dot structures
  S. Michael, W. W. Chow, and H. C. Schneider
  Physical Review B 90, 165302 (2014) (link)
• Spin-dependent lifetimes and nondegenerate spin-orbit driven hybridization points in Heusler compounds
  S. Kaltenborn and H. C. Schneider
  Physical Review B 89, 115127 (2014) (link)
• Group-velocity slowdown in quantum dots and quantum-dot molecules
  S. Michael, W. W. Chow, and H. C. Schneider
  Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89801I (2014) (link)
• Feedback effect during ultrafast demagnetization dynamics in ferromagnets
  B. Müller, A. Baral, S. Vollmar, M. Cinchetti, M. Aeschlimann, H. C. Schneider, B. Rethfeld
  Physical Review Letters 111, 167204 (2013) (link)
• Ultrafast electron dynamics in a metallic quantum well nanofilm with spin splitting
  A. Ruffing, S. Vollmar, S. Jakobs, S. Kaltenborn, A. Baral, M. Cinchetti, S. Mathias, H. C. Schneider, and M. Aeschlimann
  Physical Review B 88, 075148 (2013) (link)
• Group-velocity slowdown in an Asymmetric Quantum-Dot Molecule
  S. Michael, W. W. Chow and H. C. Schneider
  Physical Review B 88, 125305 (2013) (link)
• Plasmon dispersions in simple metals and Heusler compounds
  S. Kaltenborn and H. C. Schneider
  Physical Review B 88, 045124 (2013) (link)
• Wave-diffusion theory of spin transport in metals after ultrashort-pulse excitation
  S. Kaltenborn, Y.-H. Zhu, and H. C. Schneider
  Physical Review B 85, 235101 (2012) (link)
• Electron-phonon scattering dynamics in ferromagnets on ultrafast timescales: Influence of the phonon temperature
  S. Essert and H. C. Schneider
  Journal of Applied Physics 111, 07C514 (2012) (link)
• Electron-phonon scattering dynamics in ferromagnetic metals and their influence on ultrafast demagnetization processes
  S. Essert and H. C. Schneider
  Physical Review B 84, 224405 (2011) (link)
• Optical detection of spin transport in non-magnetic metals
  F. Fohr, S. Kaltenborn, J. Hamrle, H. Schultheiß, A. A. Serga, H. C. Schneider, and B. Hillebrands, Y. Fukuma, L. Wan, and Y. Otani
  Physical Review Letters 106, 226601 (2011) (link)
• Optical absorption spectra of finite systems from a conserving Bethe-Salpeter equation approach
  G. Pal, Y. Pavlyukh, W. Hübner, and H. C. Schneider
  European Physical Journal B 79, 327 (2011) (link)
• Optical response of small closed-shell sodium clusters
  G. Pal, G. Lefkidis, H. C. Schneider, and W. Hübner
  Journal of Chemical Physics 133, 154209 (2010) (link)
• Band-structure dependent demagnetization in the Heusler alloy Co2Mn1-xFexSi
  D. Steil, S. Alebrand, T. Roth, M. Krauß, T. Kubota, M. Ooogae, Y. Ando, H. C. Schneider, M. Aeschlimann, and M. Cinchetti 
  Physical Review Letters 105, 217202 (2010)
• Ultrafast spin dynamics in optically excited bulk GaAs at low temperatures 
  M. Krauss and H. C. Schneider, R. Bratschitsch, Z. Chen, and S. T. Cundiff 
  Physical Review B, 81, 035213 (2010) (link)
• Electronic Dynamics due to Exchange Interaction with holes in GaAs 
  H. C. Schneider and M. Krauß 
  SPIE Proceedings, vol. 7600 (2010) (see arXiv contribution for electronic version)
• Ultrafast demagnetization of ferromagnetic transition metals: the role of the Coulomb interaction 
  M. Krauss, T. Roth, S. Alebrand, D. Steil, M. Cinchetti, M. Aeschlimann, and H. C. Schneider 
  Physical Review B, 80, 180407 (2009) (link)
• Electron spin relaxation in n-type InAs quantum wires 
  C. Lü, H. C. Schneider, and M. W. Wu 
  Journal of Applied Physics, 106, 073703 (2009) (link)
• Conserving quasiparticle calculations for small metal clusters 
  G. Pal, Y. Pavlyukh, H. C. Schneider, and W. Hübner
  European Physical Journal B, 70, 483 (2009) (link)
• Spin-signal propagation in time-dependent noncollinear spin transport 
  Y.-H. Zhu, B. Hillebrands, and H. C. Schneider 
  Physical Review B, 79, 214412 (2009) (link)
• Signal propagation in time-dependent spin transport 
  Y.-H. Zhu, B. Hillebrands, and H. C. Schneider 
  Physical Review B, 78, 054429 (2008) (link)
• Ultrafast spin dynamics including spin-orbit interation in semiconductors 
  M. Krauss, M. Aeschlimann, and H. C. Schneider 
  Physical Review Letters, 100, 256601 (2008) (link)

A comprehensive publication list can be found on the Researcher ID web page. (Note the "Sort by: Publication Year" button to the top right of that page.)

• Mikroskopische Elektron-Phonon-Streuung in ferromagnetischen Übergangsmetallen und ihre Bedeutung für ultraschnelle Demagnetisierungsprozesse (S. Essert's Diplom thesis, in German)
• Theory of Semiconductor Quantum-Dot Systems: Applications to slow light and laser gain materials (S. Michael's Ph.D. thesis)
• Theoretical Models for the description of spin-dependent carrier dynamics in metals and semiconductors(M. Krauß's Ph.D. thesis)
• Theory of Signal Propagation in Time-Dependent Spin Transport (Y. H. Zhu's PhD thesis)
• Microscopic Theory of Spin Dynamics in GaAs (M. Krauß's Diplomarbeit)
• Quasiparticle properties of finite systems: A conserving GW approach (G. Pal's PhD thesis)
• Beiträge zur Theorie von Quantenkohärenzphänomenen in Halbleiter-Quantenpunkten (S. Michael's Diplomarbeit, in German)
• Beiträge zur Theorie der Spinrelaxation in p-dotierten Halbleitern (K. Hiebbner's Diplomarbeit, in German)