Personal information
Date and place of birth: 02.04.1974, Graz
Academic Career

1993 - 2000Study of physics, Karl-Franzens-University, Graz (Austria)1999 - 2000Diploma thesis
"Optical properties of metallic nanoparticles in a two-dimensional lattice configuration"August 2000 - April 2004Ph.D. thesis
"Magnetic semiconductor nanostructures" at Institute of Solid State and Semiconductor Physics, JKU LinzMay 2004 - July 2006Postdoctoral position in the IV-VI group, JKU LinzAugust 2006 - October 2009Senior PostDoc at Institute of Solid State and Semiconductor Physics, JKU Linz

August 2006 -
November 2011

Project leader of FWF Project: Ferromagnetic GeMnTe nanostructures

October 2009 -
October 2015

University Assistant, Institute of Physics, Montanuniversitaet LeobenOctober 2015-Senior Lecturer, Institute of Physics, Montanuniversitaet Leoben


"Sparkasse-Kepler-Preis" of the Sparkasse-Forschungsinstitut, University of Linz (2004) 
Research interests

  • SAXS/WAXS on nanocrystals: e.g. lead salts (PbSe,PbS,etc.) and magnetic FexOy's
  • Synchrotron X-Ray diffraction on semiconductor structures
  • MBE growth of VI-VI elements: GeMnTe, PbSe, PbTe and EuSe
  • Magnetic and magneto-optical properties of semiconductor nanostructures

Selected Publications

C. Prehal, D. Weingarth, E. Perre, R.T. Lechner, H. Amenitsch, O. Paris and V. Presser, Tracking the structural
arrangement of ions in carbon supercapacitor nanopores using in situ small-angle X-ray scattering
Energy Environ. Sci. 8, 1826-1826 (2015)

M. Burian, G. Fritz-Popovski, M. He, M.V. Kovalenko, O. Paris, and R.T. Lechner, Considerations on the
model-free shape retrieval of inorganic nanocrystals from small-angle scattering data
J. Appl. Cryst. 48, 857-868 (2015)

R.T. Lechner, G. Fritz-Popovski, M. Yarema, W. Heiss, A. Hoell, T.U. Schülli, D. Primetzhofer, M. Eibelhuber, and O. Paris, Crystal Phase Transitions in the Shell of PbS/CdS Core/Shell Nanocrystals Influences Photoluminescence Intensity
Chem. Mater. 26, 5914-5922 (2014)

H. Przybylinska, G. Springholz, R.T. Lechner, M. Hassan, M. Wegscheider, W. Jantsch, and G. Bauer
Magnetic fi eld-induced ferroelectric polarization reversal in the multiferroic Ge1-xMnxTe semiconductor,
Phys. Rev. Lett 112, 047202 (2014)

M. Yarema,S. Pichler, M. Sytnyk, R. Seyrkammer, R.T. Lechner, G. Fritz-Popovski, D. Jarzab, K. Szendrei, R. Resel, O. Korovyanko, M.A. Loi, O. Paris, G. Hesser, W. HeissInfrared Emitting and Photoconducting Colloidal Silver Chalcogenide Nanocrystal Quantum Dots from a Silylamide-Promoted Synthesis,
ACS Nano 5, 3758 (2011)

M. Hassan, G. Springholz, R.T. Lechner, H. Groiss, R. Kirchschlager, and G. Bauer
Molecular beam epitaxy of single phase GeMnTe with high ferromagnetic transition temperature
J. Cryst. Growth 323, 363 (2011)

V. Holy, M. Buljan, and R.T. Lechner
X-ray characterization of semiconductor nanostructures
Semicond. Sci. Technol. 26, 064002 (2011)

R.T. Lechner, G. Springholz, M. Hassan, H. Groiss, R. Kirchschlager, J. Stangl, N. Hrauda, and G. Bauer
Phase separation and exchange biasing in the ferromagnetic IV-VI semiconductor Ge(1-x)Mn(x)Te
Appl. Phys. Lett. 97, 023101 (2010)

A. Navarro-Quezada, W. Stefanowicz, Tian Li, B. Faina, M. Rovezzi, R.T. Lechner, T. Devillers, F. d’Acapito, G. Bauer, M. Sawicki, T. Dietl and A. Bonanni
Embedded magnetic phases in (Ga,Fe)N: Key role of growth temperature
Phys. Rev. B 81, 205206 (2010)

W. Söllinger, W. Heiss, R.T. Lechner, K. Rumpf, P. Granitzer, H. Krenn, and G. Springholz
Exchange interactions in europium monochalcogenide magnetic semiconductors and their dependence on hydrostatic strain
Phys. Rev. B 81, 155213 (2010)

R.T. Lechner, V. Holy, S. Ahlers, A. Navarro-Quezada, D. Bougeard, J. Stangl, A. Trampert and G. Bauer, Selfassembled
Mn5Ge3 nanomagnets close to the surface and deep inside a Ge1-xMnx epilayer
Appl. Phys. Lett. 95, 023102 (2009)

A. Bonanni, A. Navarro-Quezada, Tian Li, M.Wegscheider, Z. Matej, V. Holy, R.T. Lechner, G. Bauer, M. Rovezzi, F. D'Acapito, M. Kiecana, M. Sawicki, and T. Dietl 
Controlled Aggregation of Magnetic Ions in a Semiconductor: An Experimental Demonstration
Phys. Rev. Lett. 101, 135502 (2008)

M. V. Kovalenko, M. I. Bodnarchuk, R. T. Lechner, G. Hesser, F. Schäffler and W. Heiß
Fatty Acid Salts as Stabilizers in Size- and Shape-Controlled Nanocrystal Synthesis: The Case of Inverse Spinel Iron Oxide
J. Am. Chem. Soc. 129, 6352-6353 (2007)

R. T. Lechner, G. Springholz, T. U. Schülli, J. Stangl, T. Schwarzl and G. Bauer
Strain Induced Changes in the Magnetic Phase Diagram of Metamagnetic Heteroepitaxial EuSe/PbSeTe Multilayers
Phys. Rev. Lett. 94, (2005), 157201

R.T. Lechner, T. U. Schülli, V. Holý, G. Springholz, J. Stangl, A. Raab, G. Bauer, and T.H. Metzger
Ordering parameters of self-organized three dimensional quantum dot lattices determined by anomalous x-ray diffraction
Appl. Phys. Lett. 84 (2004), 885-887. 

T.U. Schülli, R.T. Lechner, J. Stangl, G. Bauer, S. Dhesi, and P. Bencok
Soft x-ray magnetic scattering from ordered EuSe nano islands
Appl. Phys. Lett. 84 (2004), 2664. 

T.U. Schülli, J. Stangl, Z. Zhong, R.T. Lechner, M. Sztucki, T.H. Metzger, and G.Bauer
Direct Determination of Strain and Composition Profiles in SiGe Islands by Anomalous X-Ray Diffraction at High Momentum Transfer
Phys.Rev.Lett. 90 (2003), 66105 

A. Raab, R. T. Lechner, and G. Springholz
Self-organized lateral ordering for vertically aligned Pbse/Pbeute quantum-dot superlattices
Appl. Phys. Lett. 80 (2002), 1273-1275. 

B. Lamprecht, G. Schider, R. T. Lechner, H. Ditlbacher, J.R. Krenn, A. Leitner, and F. R. Aussenegg
Metal Nanoparticle Gratings: Influence of Dipolar Particle Interaction on the Plasmon Resonance
Phys. Rev. Lett. 84 (2000), 4721-4724