WMI Home
about us research methods and techniques teching members publications Diploma and PhD theses    
Rudolf Gross

Prof. Dr. Rudolf Gross

Lecture Notes
Curriculum Vitae

Research Activities:

1. Superconductivity:

  • FeAs-based superconductors
  • mechanism of superconductivity in the cuprate superconductors: symmetry of the order parameter, phase diagram, competion/coexistence of ordering phenomena
  • experimental methods: tunneling spectroscopy, measurement of the electrical and thermal transport properties, quantum oscillations
  • superconducting devices: Josephson junctions, superconducting Quantum Interference Devices, superconducting transistors

2. Solid State Quantum Systems and Quantum Information Processing:

  • fabrication and characterization of superconducting quantum circuits: preparation, manipulation, coupling, and read out of superconducting qubits
  • realization of superconducting qubits using π-Josephson junctions
  • study of decoherence in solid state qubits
  • superconducting circuit quantum electrodynamics (c-QED)
  • nano-electromechanical systems

3. Magnetism and Spintronics:

  • multiferroic materials, strain control of magnetism
  • spin caloritronics, spin pumping
  • ferromagnetic semiconductors
  • fabrication of magnetic tunnel junctions for magnetoresistive sensors or magnetic memories (Magnetic Random Access Memory: MRAM); use of oxide materials with large spin polarization (double perovskites, magnetite, doped manganites)
  • electrical transport and noise properties of spintronic devices and magnetoresistive materials
  • surface and interface properties of magnetic heterostructures

4. Mesoscopic Systems and Nanotechnology:

  • fabrication of metallic nanostructures (normal conducting, superconducting or ferromagnetic using electron beam lithography
  • electrical transport and noise properties of mesoscopic metallic systems  (universal conductance fluctuations, correlation effects, shot and 1/f noise, nonequilibrium effects)
  • mesoscopic superconductor/normal metal, ferromagnet/normal metal or ferromagnet/superconductor structures
  • devices based on quantum effects

5. Physics of Complex Transition Metal Oxides:

  • interplay between spin, charge, structural and orbital degrees of freedom: orbital and charge ordering, metal/insulator transition magnetism, transport properties
    experimental techniques: specific heat, thermal expansion and magnetization as a function of temperature (mK to 300K) and applied magnetic field (up to 17 Tesla)
  • colossal magnetoresistance in doped manganites
  • spin dependent transport

6. Materials Science:

  • epitaxial growth of oxide materials (e.g. cuprate superconductors, doped manganites, double perovskites, magnetite, ZnO, titanates, nickelates) as the basis of oxide electronics
    experimental methods: UHV-Laser-Molecular Beam Epitaxy with in-situ analysis (e.g.. AFM/STM, RHEED)
  • development of growth techniques for single crystals and ceramics of oxide materials
  • development of patterning technique for oxide materials

Many of our research activities are carried out in close collaboration with other universities and research all over the world. With respect to application oriented research there is also a close collaboration with industry.