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Research Group "Halbleiter- und Festkörperphysik - IV-VI, JKU Linz"
(Ao.Univ.Prof. Dr. Gunther Springholz)

Head of the research group:
Last name:Springholz
First name(s):Gunther
Title:Ao.Univ.Prof. Dr.
Position:Universitätsprofessor
Institution:
Institution:Johannes Kepler University Linz
Organizational unit:Institut für Halbleiter- und Festkörperphysik
Street address:Altenbergerstrasse 69
Postal code:4040
City:Linz
Mail:gunther.springholz(at)jku.at
Homepage:http://www.hlphys.jku.at/staff/springholz.html
Assignments to Research Areas:
Research area(s):
  • Semiconductor Physics
  • Solid State Physics
Assignments to Fields of Work According to the Austrian System of Science Areas:
Field(s) of work:
  • Magnetism (103017)
  • Nanotechnology (210006)
  • Semiconductor physics (103011)
  • Solid state physics (103009)
Data Acquisition:
Date of the data acquisition:31.05.2011
Data acquisition period:from: 2005   up to including: 2009
Research Group at the Time of the Data Acquisition:
Scientific group members:
6 Persons
Stefan Kriechbaumer, Dipl. Ing.
Bolormaa Sanduijav, Dr.
Astrid Hochreiner, Dipl. Ing.
Mahoom Ul-Hassan, MSC
Martin Eibelhuber, Dipl. Ing.
Dmytro Lugovvy, MSC.
Percentage project-funded:80
Scientific Output in the Above Data Acquisition Period:
H-index of the group head:25
Number of publications:50
Five most important publications:
  1. L. Abtin, G. Springholz, and V. Holy, "Surface Exchange and Shape Transitions of PbSe Quantum Dots during Overgrowth", Physical Review Letters 97, 266103-6 (2006)
  2. W. Heiss, H. Groiss, E. Kaufmann, G. Hesser, M. Böberl, G. Springholz, F. Schäffler, K. Koike, H. Harada, and M. Yano, "Centrosymmetric PbTe/CdTe quantum dots coherently embedded by epitaxial precipitation", Applied Physics Letters 88, 192109-11 (2006)
  3. 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", Physical Review Letters 94, 157201-4 (2005)
  4. T. Schwarzl, G. Springholz, M. Böberl, E. Kaufmann, J. Roither, W. Heiss, J. Fürst, and H. Pascher,"Emission properties of 6.7 µm continuous-wave PbSe-based vertical-cavity surface-emitting lasers operating up to 100 K" Applied Physics Letters 86, 031102 (2005)
  5. G. Springholz, "Three-Dimensional Stacking of Self-Assembled Quantum Dots in Multilayer Structures"Comptes Rendues de Physique 6, 89-103 (2005)
Five most important talks:
  1. G. Springholz, invited "Mid-Infrared Vertical Cavity Surface Emitting Lasers", 9th International Conference on Mid-Infrared Optoelectronic Materials and Devices, 7. - 11.9.2008, Freiburg, Germany
  2. G. Springholz, invited, "Epitaxial growth of self-assembled IV-VI semiconductor quantum dots", 15th International Conference on Molecular Beam Epitaxy, 3.-8.8.2008, Vancouver, Canada
  3. A. Hochreiner, et al., invited, "Widely tunable mid-infrared photoluminescence from epitaxial PbTe quantum dots embedded in a CdTe matrix" 30th International Conference on Physics of Semiconductors, 25.-30.7.2010, Seoul, Korea
  4. G. Springholz, invited, "A Novel Synthesis Method for Fabrication of Self-Assembled Quantum Dots based on Phase Separation", 3rd VCIAN Conference on Interactions among Nanostructures, June 20 -25, Santorino, Greece.
  5. G. Springholz, invited, "Unique growth properties of Ge on high-indexed Si (11 10) surfaces", 8th International Workshop on Epitaxial Semiconductors on Patterned Substrates and Novel Index Surfaces,14-18.6.2010, Como, Italy
Projects and Funding Granted in the Above Data Acquisition Period:
Competitive projects:
  • FWF P17436-N08:
    Scanning Tunnelling Microscopy Investigations of Site-Controlled SiGe Nanoislands
    Laufzeit: 2004 - 2008; Mittel: 280 kEuro
  • FWF F2594-N08:
    IR-ON: Epitaxial Lead Salt Nanostructures for Mid-Infrared Lasers and Detectors (1st Period)
    Laufzeit: 2005 - 2009; Mittel: 377 kEuro
  • FWF F2594-N08:
    SANDiE Network of Excellence
    Laufzeit: 2004 - 2006, 28 European partners; Co-applicant with G. Bauer
  • FWF F2594-N08:
    IR-ON: Epitaxial Lead Salt Nanostructures for Mid-Infrared Lasers and Detectors (2nd Period)
    Laufzeit: 2009 - 2012; Mittel: 320 kEuro
  • FWF P20970-N20:
    Quantum Dot Nanoprecipitates in Semiconductor Structures
    Laufzeit: 2009 - 2012; Mittel: 396 kEuro
  • FWF SFB F25:
    SPINTRA: Spin-dependent transport and electronic correlations in nanostructures (FONE-ESF)
    Laufzeit: 2005 - 2009; Mittel: 382 kEuro
  • FWF P15583-N08:
    Lead salt mid-infrared microcavity lasers
    Laufzeit: 2003 - 2005; Mittel: 240 kEuro
Research Topics:
Current research topics:
  • Semiconductor nanostructures
  • IV-VI and II-VI compounds
  • Epitaxy
  • Optoelectronic devices
  • Quantum dots
  • Mid-infrared spectroscopy
  • Lasers
  • Detectors
  • Magnetic semiconductors
  • Silicon germanium
  • Scanning probe microscopy
  • Low dimensional physics
Future topics (next 5 years):
  • Nanotechnology
  • Epitaxy
  • Magnetic materials
  • Lasers
  • Topological insulators
  • Quantum dots
  • Semiconductors
  • Scanning probe microscopy
Teaching and Research Mobility in the Above Data Acquisition Period:
Doctor's theses:
3 doctor's theses
  1. Dr. MSc. Laurel Abtin, Universität Linz, 2008 über "Scanning Tunneling Microscopy of buried Self-assembled Nanostructures"
  2. Dr. Dima Lugovyy, Universität Linz seit 2010, "Strain Tuning of Self-Assembled Quantum Dots"
  3. Dr. Dan Matei, Universität Linz seit 2010, "Scanning Tunneling Microscopy of SiGe Nanoislands on patterned Si substrates
Diploma and master theses:
1 thesis
  1. Dipl. Ing. Stefan Kriechbaumer, Univeristät Linz 2010, "PbTe/CdTe Quantum Dot Nanoprecipitates"
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