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34 papers
Comparing fermionic superfluids in two and three dimensions
Lennart Sobirey, Hauke Biss, Niclas Luick +3
Understanding the origins of unconventional superconductivity has been a major focus of condensed matter physics for many decades. While many questions remain unanswered, experimen…
Excitation Spectrum and Superfluid Gap of an Ultracold Fermi Gas
Hauke Biss, Lennart Sobirey, Niclas Luick +5
Ultracold atomic gases are a powerful tool to experimentally study strongly correlated quantum many-body systems. In particular, ultracold Fermi gases with tunable interactions hav…
Single atom counting in a two-color magneto-optical trap
Martin Schlederer, Alexandra Mozdzen, Thomas Lompe +1
Recording the fluorescence of a magneto-optical trap (MOT) is a standard tool for measuring atom numbers in experiments with ultracold atoms. When trapping few atoms in a small MOT…
Observation of superfluidity in a strongly correlated two-dimensional Fermi gas
Lennart Sobirey, Niclas Luick, Markus Bohlen +3
Understanding how strongly correlated two-dimensional (2D) systems can give rise to unconventional superconductivity with high critical temperatures is one of the major unsolved pr…
Sound propagation and quantum limited damping in a two-dimensional Fermi gas
Markus Bohlen, Lennart Sobirey, Niclas Luick +4
Strongly interacting two-dimensional Fermi systems are one of the great remaining challenges in many-body physics due to the interplay of strong local correlations and enhanced lon…
An ideal Josephson junction in an ultracold two-dimensional Fermi gas
Niclas Luick, Lennart Sobirey, Markus Bohlen +4
The role of reduced dimensionality in high temperature superconductors is still under debate. Recently, ultracold atoms have emerged as an ideal model system to study such strongly…