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Positions

at the FHI are available either as employment contracts or as stipends in the framework of the FHI guest program

Physikalische Chemie
The Fritz-Haber-Institut (Physikalische Chemie) offers a
  PhD
position(s).

Development of a narrowband XUV source

The Emmy Noether research group Dynamics of Correlated Materials at the Fritz Haber Institute (http://www.fhi-berlin.mpg.de/pc/docm-new.html) is offering a PhD position in experimental condensed matter physics and laser development. The group investigates the ultrafast dynamical processes in strongly correlated systems, in order to understand the manifold of competing broken-symmetry ground states of those materials such as high-temperature superconductivity, magnetic orders or density wave formation. The Fritz Haber Institute and the department of physical chemistry offer an excellent and interdisciplinary environment for top-of-the-line research. The group operates and further develops a world-leading high repetition rate extreme ultraviolet (XUV) time- and angle-resolved photoelectron spectroscopy (trARPES) setup based on a high-power all fiber-driven OPCPA laser system.

Topic of the doctoral thesis: Development of a narrow-band high-repetition rate high harmonics generation (HHG) XUV light source for time-resolved ARPES experiments in unconventional superconductors. The successful applicant will construct and build a novel narrow-band XUV source for trARPES with high energy resolution, which will be complementary to the existing HHG setup that is optimized for high temporal resolution. This HHG source will be then used to investigate the ultrafast dynamics in strongly correlated materials exhibiting ordering phenomena at small energy scales such as high-temperature superconducting Cuprates and Fe pnictides, antiferromagnetic or heavy-Fermion Kondo systems.

Applicants should hold an excellent Diploma or Master degree in Physics or Material Sciences, and should have a strong background and interest in at least one of the following areas:

- ultrafast laser development and technology
- pulse shaping and compression
- high-harmonic generation
- femtosecond time-resolved spectroscopies
- photoelectron spectroscopy
- physics of strongly correlated materials

The appointment will be for a duration of 36 months and the initial salary will be oriented at the TVöD (E13, 60%) with the potential for performance-related raises (up to 75%). Preference will be given to female and handicapped applicants provided equal suitability. Applications (motivation letter, CV, list of publications, description of previous work, contact details of at least two academic references, etc.) shall be sent to:

Dr. Laurenz Rettig
Fritz Haber Institute of the Max Planck Society
Department of Physical Chemistry
Faradayweg 4-6
D-14195 Berlin
Germany
E-mail: rettig@fhi-berlin.mpg.de
Physikalische Chemie
The Fritz-Haber-Institut (Physikalische Chemie) offers a
  Two PhD
position(s).

The Emmy Noether Research Group Dynamics of Correlated Materials at the Fritz-Haber-Institute is offering two PhD positions in experimental condensed matter physics. The group investigates the ultrafast dynamical processes in strongly correlated systems, in order to understand the manifold of competing broken symmetry ground states of those materials such as high-temperature superconductivity, magnetic orders or density wave formation. The Fritz Haber Institute and the Department of Physical Chemistry offer an excellent and interdisciplinary environment for top-of-the-line research.T he group operates a world-leading high-repetition rate extreme ultraviolet (XUV) time- and angle-resolved photoelectron spectroscopy (trARPES) setup and performs time-resolved x-ray diffraction experiments at large scale research facilities.

Topics of the research: Both offered positions concentrate on the femtosecond dynamics of phase transitions in strongly correlated materials, which arise due to the strong interplay of electronic, lattice and spin degrees of freedoms. By employing a combination of complementary time-resolved techniques sensitive to the respective degrees of freedom those couplings will be directly assessed in the time-domain. The first position will concentrate the electronphonon coupling in model systems exhibiting metal-insulator transitions induced by charge density wave order, while the second position will investigate the interplay of electronic correlations and magnetic ordering in various classes of antiferromagnetic model systems, which hold a strong relevance for future spintronic applications. The experiments include femtosecond XUV trARPES measurements, giving access to electron dynamics, and complementary information on spin and lattice ordering will be gained from time-resolved (resonant) x-ray diffraction experiments performed at synchrotron and/or free-electron laser facilities. Additional ultrafast electron diffraction experiments can be performed in collaboration with the Structural & Electron Surface Dynamics group at the FHI. Sample preparation will include in-situ growth as well as sample cleaving in UHV chambers.

Applicants should hold an excellent Diploma or Master degree in Physics or Material Sciences, and should have a strong background and interest in at least one of the following areas:
- femtosecond time-resolved spectroscopies
- photoelectron spectroscopy
- x-ray or electron diffraction
- in-situ growth of epitaxial metal and oxide films in ultrahigh vacuum
- physics of strongly correlated materials

Both appointments will be for a duration of 36 months and initial salary is according to TVöD-L (E13, 60 percent), with the potential for a performance-related raise up to 75 percent). Preference will be given to female or handicapped applicants provided equal suitability. Applications (motivation letter, CV, list of publications, description of previous work, contact details of academic references, etc.) shall be sent to:

Dr. Laurenz Rettig
Fritz Haber Institute of the Max Planck Society
Department of Physical Chemistry
Faradayweg 4-6
D-14195 Berlin Germany
E-Mail: rettig@fhi-berlin.mpg.de
WWW: http://www.fhi-berlin.mpg.de/pc/docm-new.html

Physikalische Chemie
The Fritz-Haber-Institut (Physikalische Chemie) offers a
  PhD position in “Terahertz spintronics”
position(s).

The project: Terahertz spintronics

Currently, many research efforts aim at extending conventional electronics (which is based on the charge of the electron) by the electron’s spin degree of freedom. Elementary operations of such spin-based electronics (spintronics) are the reorientation and transport of spins in space. They should proceed as fast as possible.

The goal of this project is to measure, understand and finally control spin dynamics in solids at extremely high, that is, terahertz frequencies. In the course of this work, stimuli and probes based on terahertz electromagnetic transients and femtosecond laser pulses will be developed. New applications will emerge, e.g. efficient broadband emitters of terahertz radiation.

You have
• An excellent master’s degree in physics or related subject
• Background in solid-state physics (e.g. magnetism) and/or ultrafast laser spectroscopy

You get
• Exciting research in a dynamic Max Planck group located in the Berlin science area
• Excellent supervision and education, including the International Max Planck Research School

How to apply? Please mail us
• Your scientific CV and university certificates with marks
• A motivation letter (max. 1 page) why you want to join the group. Only applications with this motivation will receive our full attention.

The Terahertz Physics Group
• Makes use of cutting-edge ultrafast terahertz technology to reveal and control new ultrafast processes in condensed matter
• Develops novel schemes for the efficient generation, detection and manipulation of electromagnetic pulses in the highly unexplored terahertz frequency window

Contact:
Tobias Kampfrath
Email: kampfrath@fhi-berlin.mpg.de
Terahertz Physics Group Homepage: http://www.fhi-berlin.mpg.de/pc/KAMPFRATH/welcome.html
Fritz Haber Institute of the Max Planck Society
Berlin, Germany



Impressum • © FHI
Tue, 6. Oct 2015
Address: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
Tel: +49 30 8413 30, Fax: +49 30 8413 3155, E-Mail: fhi@fhi-berlin.mpg.de