Disorder Induced BCS-BEC Crossover in an Ultracold Fermi Gas
| buir.contributor.author | Tanatar, Bilal | |
| buir.contributor.orcid | Tanatar, Bilal|0000-0002-5246-0119 | |
| dc.citation.epage | 1895 | en_US |
| dc.citation.issueNumber | 5 | en_US |
| dc.citation.spage | 1891 | en_US |
| dc.citation.volumeNumber | 26 | en_US |
| dc.contributor.author | Khan, A. | en_US |
| dc.contributor.author | Basu, S. | en_US |
| dc.contributor.author | Tanatar, Bilal | en_US |
| dc.date.accessioned | 2015-07-28T12:07:06Z | |
| dc.date.available | 2015-07-28T12:07:06Z | |
| dc.date.issued | 2013-05 | en_US |
| dc.department | Department of Physics | en_US |
| dc.description.abstract | We develop the formalism for BCS-BEC crossover in the presence of weak random impurity and calculate the effect of the random potentials on the basic mean-field quantities. The disorder has been included through the Nozieres and Schmitt-Rink theory of superconducting fluctuations, and we obtain the disorder induced superfluid order parameter and chemical potential through a self-consistent calculation. We also calculate the condensate fraction which reveals a distinct nonmonotonic behavior. The downturn in the latter result occurs at the crossover regime with gradual depletion on the BEC side. The non-monotonic feature in the condensate fraction data has been measured in clean systems. Motivated by the above result, we discuss the stability of a disordered fermionic superfluid in the crossover regime. | en_US |
| dc.description.provenance | Made available in DSpace on 2015-07-28T12:07:06Z (GMT). No. of bitstreams: 1 10.1007-s10948-012-1949-7.pdf: 428455 bytes, checksum: 5095c59e023f4d8eb319d9838ef80de8 (MD5) | en |
| dc.identifier.eissn | 1557-1947 | |
| dc.identifier.issn | 1557-1939 | |
| dc.identifier.uri | http://hdl.handle.net/11693/13592 | |
| dc.language.iso | English | en_US |
| dc.publisher | Springer | en_US |
| dc.relation.isversionof | http://dx.doi.org/10.1007/s10948-012-1949-7 | en_US |
| dc.source.title | Journal of Superconductivity and Novel Magnetism | en_US |
| dc.subject | Superconductivity | en_US |
| dc.subject | BCS-BEC crossover | en_US |
| dc.subject | Disorder effects | en_US |
| dc.title | Disorder Induced BCS-BEC Crossover in an Ultracold Fermi Gas | en_US |
| dc.type | Article | en_US |
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