File Download
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1103/PhysRevResearch.2.012028
- Scopus: eid_2-s2.0-85085843883
- WOS: WOS:000600716900001
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Collective excitations in two-dimensional SU(N) Fermi gases with tunable spin
Title | Collective excitations in two-dimensional SU(N) Fermi gases with tunable spin |
---|---|
Authors | |
Keywords | Atomic and Molecular Physics Condensed Matter Physics |
Issue Date | 2020 |
Publisher | American Physical Society. The Journal's web site is located at https://journals.aps.org/prresearch/ |
Citation | Physical Review Research, 2020, v. 2 n. 1, p. 012028(R):1-012028(R):5 How to Cite? |
Abstract | We measure collective excitations of a harmonically trapped two-dimensional (2D) SU(N) Fermi gas of
173Yb confined to a stack of layers formed by a one-dimensional optical lattice. Quadrupole and breathing modes are excited and monitored in the collisionless regime | ln(kFa2D)|≫1 with tunable spin. We observe that the quadrupole mode frequency decreases with increasing number of spin components due to the amplification of the interaction effect by N in agreement with a theoretical prediction based on 2D kinetic equations. The breathing mode frequency, however, is measured to be twice the dipole oscillation frequency regardless of N. We also follow the evolution of collective excitations in the dimensional crossover from two to three dimensions and characterize the damping rate of quadrupole and breathing modes for tunable SU(N) fermions, both of which reveal the enhanced interparticle collisions for larger spin. Our result paves the way to investigate the collective property of 2D SU(N) Fermi liquid with enlarged spin. |
Persistent Identifier | http://hdl.handle.net/10722/287365 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 1.689 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | He, CD | - |
dc.contributor.author | Ren, Z | - |
dc.contributor.author | Song, B | - |
dc.contributor.author | Zhao, E | - |
dc.contributor.author | Lee, J | - |
dc.contributor.author | Zhang, YC | - |
dc.contributor.author | Zhang, S | - |
dc.contributor.author | Jo, GB | - |
dc.date.accessioned | 2020-09-22T02:59:58Z | - |
dc.date.available | 2020-09-22T02:59:58Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Physical Review Research, 2020, v. 2 n. 1, p. 012028(R):1-012028(R):5 | - |
dc.identifier.issn | 2643-1564 | - |
dc.identifier.uri | http://hdl.handle.net/10722/287365 | - |
dc.description.abstract | We measure collective excitations of a harmonically trapped two-dimensional (2D) SU(N) Fermi gas of 173Yb confined to a stack of layers formed by a one-dimensional optical lattice. Quadrupole and breathing modes are excited and monitored in the collisionless regime | ln(kFa2D)|≫1 with tunable spin. We observe that the quadrupole mode frequency decreases with increasing number of spin components due to the amplification of the interaction effect by N in agreement with a theoretical prediction based on 2D kinetic equations. The breathing mode frequency, however, is measured to be twice the dipole oscillation frequency regardless of N. We also follow the evolution of collective excitations in the dimensional crossover from two to three dimensions and characterize the damping rate of quadrupole and breathing modes for tunable SU(N) fermions, both of which reveal the enhanced interparticle collisions for larger spin. Our result paves the way to investigate the collective property of 2D SU(N) Fermi liquid with enlarged spin. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at https://journals.aps.org/prresearch/ | - |
dc.relation.ispartof | Physical Review Research | - |
dc.rights | Copyright [2020] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevResearch.2.012028]. | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Atomic and Molecular Physics | - |
dc.subject | Condensed Matter Physics | - |
dc.title | Collective excitations in two-dimensional SU(N) Fermi gases with tunable spin | - |
dc.type | Article | - |
dc.identifier.email | Zhang, S: shizhong@hku.hk | - |
dc.identifier.authority | Zhang, S=rp01661 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevResearch.2.012028 | - |
dc.identifier.scopus | eid_2-s2.0-85085843883 | - |
dc.identifier.hkuros | 314467 | - |
dc.identifier.volume | 2 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 012028(R):1 | - |
dc.identifier.epage | 012028(R):5 | - |
dc.identifier.isi | WOS:000600716900001 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2643-1564 | - |