Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

One of the most powerful methods to determine bulk band-structure parame-ters in metals is the measurement of magnetic quantum oscillations. This can be done e.g. by measuring the field-dependent magnetization, i.e., the de Haas-van Alphen (dHvA) effect, or by resolving Shubnikov-de Haas (SdH) oscillations in the field-dependent resistivity. It is, however, only the comparison with sophisticated band-structure calculation that a deeper understanding of the electronic properties of metals can be gained. Besides the user-lab activities a strong in-house research program is pursued at the HLD. Thereby, the focus is laid on the investigation of correlated electron systems at high magnetic fields. This covers e.g. the recently found clear thermodynamic evi-dence for the existence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in a layered organic superconductor [1] and the determination of the band- and angle-resolved superconducting coupling strength in the borocarbide superconductor LuNi₂B₂C [2].