2 papers
cond-mat.quant-gas2021
Roton Excitations in an Oblate Dipolar Quantum Gas
Jan-Niklas Schmidt, Jens Hertkorn, Mingyang Guo +7
We observe signatures of radial and angular roton excitations around a droplet crystallization transition in dipolar Bose-Einstein condensates. In situ measurements are used to cha…
cond-mat.quant-gas2020
Density Fluctuations across the Superfluid-Supersolid Phase Transition in a Dipolar Quantum Gas
J. Hertkorn, J. -N. Schmidt, F. Böttcher +8
Phase transitions share the universal feature of enhanced fluctuations near the transition point. Here we show that density fluctuations reveal how a Bose-Einstein condensate of di…