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Research Group "Festkörperphysik, TU Wien"
(Univ.Prof. Dr. Silke Bühler-Paschen)

Head of the research group:
Last name:Bühler-Paschen
First name(s):Silke
Title:Univ.Prof. Dr.
Position:Institutsleiterin
Institution:
Institution:Vienna University of Technology
Organizational unit:Institut für Festkörperphysik
Street address:Wiedner Hauptstraße 8
Postal code:1040
City:Wien
Mail:silke.buehler-paschen(at)tuwien.ac.at
Homepage:http://www.ifp.tuwien.ac.at/paschen.0.html
Assignments to Research Areas:
Research area(s):
  • Solid State Physics
Assignments to Fields of Work According to the Austrian System of Science Areas:
Field(s) of work:
  • Quantum mechanics (103025)
  • Solid state physics (103009)
Data Acquisition:
Date of the data acquisition:01.12.2010
Data acquisition period:from: 2005   up to including: 2010
Research Group at the Time of the Data Acquisition:
Scientific group members:
15 Persons
Dr. Jeroen Custers
DI. Stefan Laumann
Dr. Günther Lientschnig
Dr. Martin Müller
PD Dr. Andrey Prokofiev
Dr. Manjusha Inamdar
Dr. Julio Antonio Larrea Jimenez
Dr. Duy Ha Nguyen
Dr. Andrey A. Sidorenko
Dr. Xinlin Yan
DI. Matthias Ikeda
DI. Karl Anton Lorenzer
MSc. Lubuna Beegum Shafeek
DI. Hannes Winkler
Jonathan Hänel
Percentage project-funded:67
Scientific Output in the Above Data Acquisition Period:
H-index of the group head:18
Number of publications:67
Five most important publications:
  1. S. Hartmann, N. Oeschler, C. Krellner, C. Geibel, S. Paschen, and F. Steglich: Thermopower evidence for an abrupt Fermi surface change at the quantum critical point of YbRh2Si2, Phys. Rev. Lett. 104, 096401 (2010)
  2. J. Custers, P. Gegenwart, C. Geibel, F. Steglich, P. Coleman, S. Paschen: Evidence for non-Fermi liquid phase in Ge-substituted YbRh2Si2, Phys. Rev. Lett. 104, 186402 (2010)
  3. S. Friedemann, N. Oeschler, S. Wirth, C. Krellner, C. Geibel, F. Steglich, S. Paschen, S. Kirchner, and Q.Si: Fermi-surface collapse and dynamical scaling near a quantum-critical point, Proceedings of the National Academy of Sciences 107, 14547-14551 (2010)
  4. A. Prokofiev, J. Custers, M. Kriegisch, S. Laumann, M. Müller, H. Sassik, R. Svagera, M. Waas, K. Neumaier, A. M. Strydom, S. Paschen: Crystal growth and composition-property relationship of Ce3Pd20Si6 single crystals, Phys. Rev. B 80, 235107 (2009)
  5. P. Gegenwart, T. Westerkamp, C. Krellner, Y. Tokiwa, S. Paschen, C. Geibel, F. Steglich, E. Abrahams, and Q. Si: Multiple energy scales at a quantum critical point, Science 315, 969-971 (2007)
Patents:
  • "Method for producing clathrate compounds", Utility patent AT: 10749 U1 2009-09-05, US: 12/231,183, JP: 135994/2008, DE: 20 2008 006 946.7
  • "Process to realize electrical and thermal contacts of two different thermoelectric materials to optimize their performance for electricity generation in thermoelectric generators at around 300°C",
    Patent No. FR 1053954 filed on 21/5/2010
Five most important talks:
  1. S. Bühler-Paschen: Invited Talk: Thermoelectric Properties of Transition Metal Clathrates, MRS Fall Meeting, Boston, USA, 2010
  2. S. Bühler-Paschen: Invited Talk: Anisotropic transport in the Kondo insulator CeRu4Sn6, International Conference on Strongly Correlated Electron Systems, Santa Fee, USA, 2010
  3. S. Bühler-Paschen: Invited Talk: Unconventional quantum criticality, Gordon Research Conference: Correlated Electron Systems, Mount Holyoke College, South Hadley, USA, 2010
  4. S. Bühler-Paschen: Invited Talk: Kondo breakdown in the cubic heavy fermion compound Ce3Pd20Si6, International Conference on Quantum Criticality and Novel Phases, Dresden, Germany, 2009
  5. S. Bühler-Paschen: Invited Talk: Quantum criticality in a cubic heavy fermion cage compound, APS March Meeting, Pittsburgh, USA, 2009
Projects and Funding Granted in the Above Data Acquisition Period:
University funds:
  • Forschungsförderung:
    Beschichtung von Gegenständen mit Clathratverbindungen - BGC
    Laufzeit: 2009 - 2010; Mittel: 20 kEuro
    S. Bühler-Paschen - PI
  • Innovatives Projekt:
    Quantum materials at multiple extreme conditions - Q-Mat
    Laufzeit: 2007 - 2009; Mittel: 214 kEuro
    S. Bühler-Paschen - PI
  • Innovatives Projekt:
    Quantum phenomena in high magnetic fields
    Laufzeit: 2009 - 2012;
    S. Bühler-Paschen - Co-author
  • Innovatives Projekt:
    Superconductors Unlocked - SCKEY
    Laufzeit: 2008 - 2010; Mittel: 180 kEuro
    J. Custers - PI, S. Bühler-Paschen - Co-author
  • Infrastructure IV:
    Atomic Layer Engineering - ALE
    Laufzeit: ab 2007
    S. Bühler-Paschen - 1 of 8 Key Investigators
  • Infrastructure IV:
    Materials Characterization Platform - MCP
    Laufzeit: ab 2007
    S. Bühler-Paschen - 1 of 4 Key Investigators
  • Doktoratskolleg:
    Functional Matter - FunMat
    Laufzeit: 2008 - 2011; Mittel: 900 kEuro
    S. Bühler-Paschen - PI and supervisor of 2 (of 10) PhDs
Competitive projects:
  • EU NoE:
    Complex Metallic Alloys Network of Excellence - CMA
    Laufzeit: 2005 - 2010; Mittel: 309 kEuro an TU
    S. Bühler-Paschen - PI of Austrian node, PI of 2 work packages
  • FFG:
    Thermoelectricity in clathrates - THECLA
    Laufzeit: 2008 - 2010; Mittel: 195 kEuro
    S. Bühler-Paschen - PI (with 2 other partners)
  • FWF:
    Elektronisch hochkorrelierte Käfigverbindungen - EHK
    Laufzeit: 2007 - 2010; Mittel: 270 kEuro
    S. Bühler-Paschen - PI
  • COST:
    Network for intermetallic compounds as catalysts for steam reforming of methanol - IMC-SRM
    Laufzeit: 2009 - 2012
    S. Bühler-Paschen - Representative of Austria
  • ESF:
    Interdisciplinary Approaches to Functional Electronic and Biological Materials - INTELBIOMAT
    Laufzeit: 2008 - 2013
    S. Bühler-Paschen - Steering Committee Member
Funded awards:
  • ERC:
    Advanced Grant (227378) QuantumPuzzle
    Laufzeit: 2009 - 2014; Mittel: 2100 kEuro
  • MPG:
    C3-Stelle des Max-Planck-Exzellenzprogramms zur Förderung von Wissenschaftlerinnen
    Laufzeit: 2003 - 2007 (left in 2005); Mittel: 5 years C3 position + 50 kEuro
Research Topics:
Current research topics:
  • Heavy-fermion compounds
  • Quantum criticality
  • Kondo insulators
  • Filled-cage compounds, e.g. clathrates
  • Strongly correlated thermoelectrics
Future topics (next 5 years):
  • Our group will remain involved in both fundamental science in the field of quantum criticality in strongly correlated electron systems and in application oriented science in the field of thermoelectric materials. The recent expansion of the group goes along with a considerable broadening of the experimental approaches (e.g., to sub-milli-Kelvin temperatures, microwave experiments, high-pressure experiments, extended thermoelectric measurement facilities, molecular beam epitaxy, nanoscopic materials). These are expected to enable us to answer open key questions in these fields.
Teaching and Research Mobility in the Above Data Acquisition Period:
Doctor's theses:
4 doctor's theses
  1. L.T.K. Nguyen: Synthesis and Properties of Barium-Germanium Clathrates Containing Transition Metals, TU Wien, 2010
  2. S. Hartmann: Thermoelectric transport in correlated electron systems, TU Dresden, 2010 (Daily supervisor first part of thesis, remote co-supervisor till end)
  3. U. Köhler: Thermoelectric transport in rare earth compounds, TU Dresden, 2007 (Daily supervisor first part of thesis, remote co-supervisor till end)
  4. A. Sanchez: Thermal transport in strongly correlated electron systems, TU Dresden, 2005 (Daily supervisor)
Diploma and master theses:
7 theses
  1. M. Ikeda: Thermoelektrische Eigenschaften komplexer intermetallischer Verbindungen, TU Wien, 2009
  2. H. Winkler: Untersuchung physikalischer Eigenschaften von korrelierten Käfigverbindungen, TU Wien 2009
  3. T. Nezu: Herstellung und Charakterisierung von CeRu4Sn6 Einkristallen, TU Wien, 2008
  4. M. Calic: Laser-Induced Magnetization Precession in Ferromagnetic Films Grown on GaAs, TU Wien, 2008
  5. R. Höfler: Transporteigenschaften von Übergangsmetallklathraten, TU Wien, 2008
  6. Z. Bertalan: Resistivity and Hall Effect Measurements on Clathrates and Clathrate-like Compounds, TU Wien, 2007
  7. M. Kriegisch: Aufbau eines Probenstabs zur hochgenauen Messung des Hall-Effekts an YbIr2Si2, TU Wien, 2007
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