Block course (approx. 30 hours spread over several days); dates can be negotiated with lecturers -- in groups of 2-3 students
The lab course offers the opportunity to learn selected experimental methods in thin film technology, micropatterning, and structural and elektrical characterization.
From the content: epitaxial thin film growth of high-transition-temperature superconductors (vacuum technique, thin film technlology, filmgrowth); micropatterning of thin films by photolithography and ion milling; characterization of single crystalline films and thin film microstructures (x-ray diffraction, scanning electron microscopy, scanning force microscopy, characterization of eletric transport properties at low temperature).
For preparing the course, an instruction will be provided.
"Physics of Nanostructures" (Basis module: Lecture with excercises)
Lecture: Monday 10-12 am and Thursday 1-3 pm; D4 A19
Excercises: Wednesday 8-10 am, 10-12 am and 1-3 pm Uhr (S. Dickreuter, M. J. Martínez-Pérez, B. Müller, D. Wharam
This Basis module offers an introduction into the basic physics of nanostructures and interfaces and their applications.
From the content: solid state physics in reduced dimensions; electronic properties of nanostructures (miniaturization & interfaces, mesoscopic low-dimensionale structures, carbon-based systems, superconducting/metallic/spin-systems); fabrication & characterization techniques; magnetic properties of nanostructures; optical properties of nanostructures; modern systems & applications
Lecture notes are available on ILIAS.
"Quantum Matter in Atom- and Solid State Physics" (Lecture)
The lecture covers basic aspects of superconductors, superfluids, Bose-Einstein-condensates and related systems.
From the content: Microscopic and macroscopic quantum states; quantum statistics, atomic Bose- and Fermi-gases; atom traps, cooling of atomic gases into the degenerate regime; superconductors: basic effects; the BCS theory for superconductors; superfluid 4He; Gross-Pitaevskii- and Ginzburg-Landau-Theory; superfluid 3He and related systems; experiments with ultracold atoms and molecules; Josephson effects in superconductors, BECs und superfluids; Fermi gases, BEC-BCS-crossover.
The lecture offers an introduction into the basics of superconductivity.
From the content: historical notes, cooling methods; basic properties of superconductors; the macroscopic wave function; quantum interference; the BCS theory for "conventional" superconductors; properties of some superconducting elements, alloys and compounds; unconventional superconductivity; thermodynamic properties and Ginzburg-Landau-theory; critical currrents in type-I and type-II superconductors; Josephson junctions and their properties
Lecture notes are available from the lecturers.
"Applications of Superconductivity: Thin Film Devices" (Lecture)
The lecture offers an introduction into established and potential applications of superconductor thin film structures, with focus on superconducting quantum interferenz devices (SQUIDs).
From the content: fabrication technologies (materials, Josephson junctions and multilayer structures); SQUIDs: working principle, dc SQUID-basics, theoretica description, noise in dc SQUIDs; practicalSQUIDs and SQUID magnetometers; SQUID gradiometers and operation in magnetic field; SQUID applications (overview, biomagnetism, microTesla NMR and MRI, SQUID microscopy); nanoSQUIDs
Lecture notes are available from the lecturers or on ILIAS.
"Macroscopic Quantum Phenomena in Josphson Junctions and Related Systemes" (Lecture)
From the content: towards artificial atoms: Josephson junctions as macroscopic quantum systems, SQUIDs classical & quantum; charge qubits; circuit QED; complex superconducting Qubits and readout techniques. Josephson junctions with internal degrees of freedom: fluxons and other macroscopic quantum objects: long Josephson junctions as macroscopic quantum systems; fractional vortices; phi-Josephson junctions