Bound states of a localized magnetic impurity in a superfluid of paired ultracold fermions
arXiv:1010.6085 · doi:10.1103/PhysRevA.83.033619
Abstract
We consider a localized impurity atom that interacts with a cloud of fermions in the paired state. We develop an effective scattering length description of the interaction between an impurity and a fermionic atom using their vacuum scattering length. Treating the pairing of fermions at the mean-field level, we show that the impurity atom acts like a magnetic impurity in the condensed matter context, and leads to the formation of a pair of Shiba bound states inside the superconducting gap. In addition, the impurity atom can lead to the formation of deeply bound states below the Fermi sea.
arXiv comment13 pages
References in corpus (26)
- Theory of ultracold Fermi gases
- Observation of resonance condensation of fermionic atom pairs
- Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
- Vortices and Superfluidity in a Strongly Interacting Fermi Gas
- Pairing and Phase Separation in a Polarized Fermi Gas
- Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
- Experimental Study of the BEC-BCS Crossover Region in Lithium 6
- Evidence for Superfluidity in a Resonantly Interacting Fermi Gas
- Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
- Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
- Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+d
- Using photoemission spectroscopy to probe a strongly interacting Fermi gas
- Interaction Quench in the Hubbard model
- Observation of Feshbach resonances between two different atomic species
- Spectral Properties of Quasiparticle Excitations Induced by Magnetic Moments in Superconductors
- Synchronization in the BCS Pairing Dynamics as a Critical Phenomenon
- Determination of the Superfluid Gap in Atomic Fermi Gases by Quasiparticle Spectroscopy
- Evolution from BCS Superconductivity to Bose Condensation: Analytic Results for the crossover in three dimensions
- Tomographic RF Spectroscopy of a Trapped Fermi Gas at Unitarity
- Critical Temperature Curve in the BEC-BCS Crossover
- Coherence and clock shifts in ultracold Fermi gases with resonant interactions
- Feshbach resonances in mixtures of ultracold Li and Rb gases
- Three-dimensional strong localization of matter waves by scattering from atoms in a lattice with a confinement-induced resonance
- Confinement-induced p-wave resonances from s-wave interactions
- Feshbach resonances in ultracold ^{6,7}Li + ^{23}Na atomic mixtures
- Self-localization of a small number of Bose particles in a superfluid Fermi system
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- Single Impurity In Ultracold Fermi Superfluids
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- Crossover polarons in a strongly interacting Fermi superfluid
- Impurity bound states in fully gapped -wave superconductors with subdominant order parameters
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- Calculations of in-gap states of ferromagnetic spin chains on \textit{s}-wave wide-band superconductors
- Mobile magnetic impurities in a Fermi superfluid: a route to designer molecules
- Interaction-induced localization of mobile impurities in ultracold systems
- Interaction-induced localization of fermionic mobile impurities in a Larkin-Ovchinnikov superfluid
- Dynamics of impurity in the environment of Dirac fermions
- Tunable pairing with local spin-dependent Rydberg molecule potentials in an atomic Fermi superfluid
- The Gor'kov and Melik-Barkhudarov correction to the mean-field critical field transition to Fulde-Ferrell-Larkin-Ovchinnikov states
- Tunable nanomagnetism in moderately cold fermions on optical lattices