Work

Existence of strong-pairing quantum Hall phase in bilayer cold-atom systems with dipolar interactions

Year: 2014

Type: article

Abstract: We study bilayer fermionic cold-atom systems with dipolar interactions, as well as a two-component tunable pseudopotential (TCTP) model which keeps only the zeroth- and first-order Haldane pseudopotentials, at a total Landau-level filling factor of 1/2. Our numerical results on the TCTP model indicate that a Haldane-Rezayi state describes the critical point between strong and weak $d$-wave pairing quantum Hall phases. Upon further increasing the attractive zeroth-order pseudopotentials, the system transits from the strong-pairing phase to a stripe phase and then to a cluster phase (or phase separation). The dipolar interaction can be mapped onto the TCTP model in the strong-pairing phase if high-order pseudopotentials are ignored. Our numerical results show that this is indeed the case, so the strong-pairing phase exists in the cold-atom system.

Source: Physical Review B

DOI: 10.1103/physrevb.90.165102

Authors: Yuhui Zhang, E. H. Rezayi, Kun Yang

Institutions: Florida State University, National High Magnetic Field Laboratory, California State University Los Angeles

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: U.S. Department of Energy

Award: NEW: TMS: DESIGN PRINCIPLES FOR QUANTUM HALL STATES; PI-RAVINDRA BHATT