2017/04/30 by Shiuan-Fan Liou, Zi-Xiang Hu, Kun Yang · 3 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Composite fermion #Condensed matter physics #Feshbach resonance #Filling factor #Fractional quantum Hall effect #Magnetic field #Mechanical and Optical Resonators #Molecule #Pairing #Phase (matter) #Phase transition #Physics #Quantum #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum phase transition #Quantum phases #Quantum spin Hall effect #Quantum superposition #Superconductivity #Superposition principle #Topological order #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.95.241106
published in Physical review. B./Physical review. B 95(24) (American Physical Society) · Some minor changes were made and some references were added
arxiv created 2017/05/15 · openalex publication_date 2017/06/08 · arxiv updated 2017/06/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We use exact diagonalization to study the quantum phases and phase transitions when a single species of fermionic atoms at a Landau level filling factor \ensuremathνf=1 in a rotating trap interact through a p-wave Feshbach resonance. We show that under a weak pairing interaction, the system undergoes a second-order quantum phase transition from a \ensuremathνf=1 fermionic integer quantum Hall (FIQH) state at positive detuning, to a \ensuremathνb=(1)/(4) bosonic fractional quantum Hall (BFQH) state at negative detuning. However, when the pairing interaction increases, a new phase between them emerges, corresponding to a fraction of fermionic atoms staying in a coherent superposition of a bosonic molecule state and an unbound pair. The phase transition from the FIQH phase to the new phase is of second order and that from the new phase to BFQH phase is of first order.