Mentor: Dr. Ilias Perakis,
Chair, Department of Physics, University of Alabama at Birmingham, E-mail:firstname.lastname@example.org.
POSTDOCTORAL SCHOLAR POSITIONS IN THEORETICAL AND COMPUTATIONAL MANY-BODY PHYSICS OF ADVANCED MATERIALS: NON-EQUILIBRIUM/HIDDEN PHASES ACCESSED BY TAILORING FEMTOSECOND ELECTROMAGNETIC EXCITATION.
We invite applications for two post-doctoral positions in the research group of Ilias Perakis in the Department of Physics at the University of Alabama, Birmingham (UAB). These positions are available immediately and have a maximum anticipated duration of three years, renewed annually. The salary (~$45,000 per year plus benefits) will depend on the research experience. More senior candidates will be considered for a Research Assistant Professor appointment. UAB provides a highly collegial and interactive environment, with an active Office of Post-doctoral Education providing mentoring and career guidance.
Objective is to engineer initial non-adiabatic quantum states and model strongly non-equilibrium quantum dynamics of competing phases by developing time-dependent many-body approaches based on density matrix and Green’s function techniques. Such calculations will address ultrafast nonlinear spectroscopy experiments (magneto-optical, THz, and two-dimensional correlation spectroscopy. By selectively manipulating electronic states with laser-induced quantum coherent excitations and tunable magnetic fields up to 25 Tesla, we aim to understand fundamental emergent-order phenomena and control metastable states of nearly-closed quantum correlated condensed matter systems far from equilibrium. Examples include laser-induced dynamic fluctuations of multiple coupled order parameter components, which determine, e.g., the coexistence of superconductivity with spin/charge density-wave order and Kondo effects or the quantum femtosecond magnetism during metal-insulator photoinduced transitions in complex materials. Far-reaching consequences of anticipated results can be envisioned as (1) addressing “root states” for describing quantum matter far-from-equilibrium; (2) manipulating quantum coherence and entanglement at the macroscopic level in quantum-critical condensed matter states. This project is integrated with broader research and education activities of an expanding UAB Physics Department, which addresses grand-challenge problems at the intersection of Physical, Life, and Materials Sciences that impact next-generation multi-functional devices.
Of particular interest is the design and analysis of experimental measurements involving multiple tunable ultra-short optical, THz, and x-ray pulses, including pulse shaping and coherent control algorithms. We will study quantum materials (manganite, iron-pnictide, and charge/spin density wave ordered systems) with coupled exciton, charge, orbital, spin, and lattice orders and two-dimensional structures under extremely high magnetic fields.
Applications should include curriculum vitae, publication list, and two letters of recommendation emailed to Professor Ilias E. Perakis, Chair, UAB Department of Physics, at email@example.com
Some publications relevant to this project:
1. “Femtosecond switching of magnetism via strongly correlated spin-charge quantum excitations”, T. Li, A. Patz, L. Mouchliadis, J. Yan, T. A. Lograsso, I. E. Perakis, and J. Wang, Nature 496, 69 (2013).
2. “Non-thermal separation of electronic and structural orders in a persisting charge density wave”, M. Porer, U Leierseder, J.-M. Ménard, H. Dachraoui, L. Mouchliadis, I. E. Perakis, U. Heinzmann, J. Demsar, K. Rossnagel , and R. Huber,Nature Materials 13, 857 (2014).
3. “Ultrafast observation of critical nematic fluctuations and giant magnetoelastic coupling in iron pnictides”, A. Patz, T. Li, S. Ran, R. Fernandes, S. Bud'ko, J. Schmalian, P. Canfield, I.E.Perakis and J. Wang, Nature Communications 5
, 3229 (2014).
4. “Correlating Quasi-Electron Relaxation with Quantum Femtosecond Magnetism in the Order Parameter Dynamics of Insulating Manganites”, T. Li, A. Patz, P. Lingos, L. Mouchliadis, L. Li, J. Yan, I. E. Perakis, and J. Wang, arXiv:1409.1591
5. “Strong Electronic Correlation Effects in Coherent Multidimensional Nonlinear Optical Spectroscopy”, M. E. Karadimitriou, E. G. Kavousanaki, K. M. Dani, N. A. Fromer, and I. E. Perakis, J. Phys. Chem. B 115
, 5634 (2011).
6. “Manipulating femtosecond spin-orbit torques with laser pulse sequences to control magnetic memory states and ringing”, P. C. Lingos, J. Wang, and I. E. Perakis, Phys. Rev. B 91
, 195203 (2015).