Bibliographic Details
| Title: |
Evidence of superfluidity in a dipolar supersolid from non-classical rotational inertia |
| Authors: |
Tanzi, L., Maloberti, J. G., Biagioni, G., Fioretti, A., Gabbanini, C., Modugno, G. |
| Source: |
Science, Vol. 371, Issue 6534, pp. 1162-1165 (2021) |
| Publication Year: |
2019 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Quantum Gases |
| More Details: |
A key manifestation of superfluidity in liquids and gases is a reduction of the moment of inertia under slow rotations. Non-classical rotational effects have been searched for a long time also for the elusive supersolid phase of matter, in which superfluidity coexists with a lattice structure. Here we show that the recently discovered supersolid phase in dipolar quantum gases features a reduced moment of inertia. We study a peculiar rotational oscillation mode in a harmonic potential, the scissors mode, already employed for superfluids. From the measured moment of inertia, we infer a superfluid fraction that is different from zero and of order of unity, providing direct evidence of the superfluid nature of the dipolar supersolid.
Comment: 8 pages, 4 figures, revised version |
| Document Type: |
Working Paper |
| DOI: |
10.1126/science.aba4309 |
| Access URL: |
http://arxiv.org/abs/1912.01910 |
| Accession Number: |
edsarx.1912.01910 |
| Database: |
arXiv |
