illuminated Helium laboratory from outside through the window

Konferenzen und Workshops

2.-5. Juni 2020nature Konferenz: Microrobots & nanorobots for biotechnology, AGUV Akademie Dresden
15.-20. März 2020DPG-Frühjahrstagung, Dresden
10./11. Feb. 2020Sächsischer Forschungs- und Vernetzungs-workshop »Thermoelektrische Anwendungen in der Industrie«
Dorint Parkhotel Meißen
23.-24. Jan. 2020BIOREMIA Kick-off Meeting , IFW Dresden
Sept. 25-27, 2019Annual IFW Summer School for PhD students in Szczecin, Polan

Sept. 15-20, 2019

ECASIA19: 18th European Conference on Applications of Surface and Interface Analysis

Sept. 13-20, 2019

Summer School Spectroelectrochemistry, IFW Dresden
May 20/21, 2019International Workshop "Topology meets materials – Weizmann meets Dresden", IFW Dresden
March 28/29, 2019

International Workshop "Quantum Dynamics, Transport, and Exotic Orders: Strolling among Spins and Strong Correlations", IFW Dresden

March 28/29, 2019Joint workshop of BAM Berlin and IFW Dresden, IFW Dresden

Dec. 4-5. 2018

UKRATOP Workshop, IFW Dresden

Oct. 1 – 2, 2018

SAW Symposium, Westin Bellevue Dresden, Dresden, Germany

Aug. 28-30, 2018Spin , waves & interactions 2018, Greifswald, Germany

April 8- 11, 2018

667. WE-Heraeus-Seminar on System-oriented approach to thermoelectrics: Materials – Interfaces – Devices in Bad Honnef, Germany

March 11-16, 2018

Joint Conference of the Condensed Matter Divisions of the DPG and EPS,

  • Session "Geometry and Topology-Controlled Nanoarchitectures", organized by Prof. Dr. V. Fomin, IFW Dresden
  • Symposium “Topology in Condensed Matter Physics (SYTO)”, co-organizer Prof. Dr. Jeroen van den Brink, IFW Dresden
  • Symposium “Voltage Control of Functional Interfaces: Magneto-ionic Meet Memristive Systems (SYVC)”, Co-organizer Dr. Karin Leistner, IFW Dresden

Feb. 1, 2018

Workshop of the DFG Priority Programme 1458 “High Temperature Superconductivity in Iron Pnictides“, IFW Dresden

Jan.  29-31, 2018

EPSQMat 2018: International Workshop on Electron and photon spectroscopies of quantum materials: status and perspectives, IFW Dresden

Lectures this week

Freitag 05.06.2020
IFW Zoom Seminar11:00
Ort Join Zoom Seminar: to be announced
Referent Sabine Wurmehl
Thema CANCELLED: Solid state single crystal growth of three-dimensional faceted LaOFeAs crystals
Soon after the discovery of iron-based superconductors, single crystals of various pnictide families were successfully grown using self-flux growth. However, LaOFeAs single crystals are hard to be obtained via flux growth [1]-[2]. Crystals could be successfully synthesized using high-pressure-high- temperature synthesis [3], but this method is limited to rather small crystals and also did not lead to a reasonable growth along the c direction, so far. This lack of large, well-faceted and 3-dimensional crystals is currently hindering their detailed investigation.

Solid state single crystal growth (SSCG) is a crystal growth technique where crystals are grown from a polycrystalline matrix. Here, we present single crystals of the iron pnictide LaOFeAs grown via SSCG. The size of the as-grown crystals are up to 2x3x0.4 mm3. Typical for this method, but very uncommon for crystals of the pnictide superconductors and especially for the oxypnictides, the crystals show pronounced facets and considerable growth in c direction [4]. Current research aims to further understand details of the growth mechanism and to explore growth of crystals with different types of doping using the SSCG method. These crystals are subject of several studies to shed light on the physics of their properties (see, e.g., [5]).

1. J.-Q. Yan, et al., Appl. Phys. Lett. 95, 222504 (2009).
2. A. Jesche, et al. Phys. Rev. B 86, 134511 (2012).
3. N. D. Zhigadlo, et al., Phys. Rev. B 86, 214509 (2012).
4. R. Kappenberger, et al., J. Cryst. Growth 483, 9 (2018).
5. L. Wang, et al., J. Magn. Magn Mater. 482, 50 (2019).

This work has been supported by Deutsche Forschungsgemeinschaft DFG. The authors thank R. Wachtel, D. Meiler, J. Werner, L. Giebeler, S. Müller-Litvanyi, C. Wuttke and S. Gass (all IFW Dresden) for support and J. M. Ok (POSTECH) for valuable discussions.

Eingeladen von Prof. Dr. Jeroen van den Brink
Kontakt Grit Rötzer

Lectures next week

Montag 08.06.2020
Ort Hörsaal, IFW Dresden A1E.10
Referent Bastian Rubrecht
Thema Long-range magnetic order in the S=1/2 triangular lattice antiferromagnet KCeS2
Eingeladen von Prof. Dr. Bernd Büchner
Kontakt Kerstin Höllerer

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