Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article)
This review is written at the time of the twentieth anniversary of the discovery of high-temperature superconductors, which, nearly coincides with the important discovery of the superfluid phases of ultracold trapped fermionic atoms. We show how these two subjects have much in common. Both have b...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2006 |
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| Sprache: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
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| Zitieren: | Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) / Qijin Chen, J. Stajic, K. Levin // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 538–560. — Бібліогр.: 121 назв. — англ. |
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Qijin Chen Stajic, J. Levin, K. 2017-06-11T12:08:26Z 2017-06-11T12:08:26Z 2006 Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) / Qijin Chen, J. Stajic, K. Levin // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 538–560. — Бібліогр.: 121 назв. — англ. 0132-6414 PACS: 74.20.Fg, 71.10.Ca https://nasplib.isofts.kiev.ua/handle/123456789/120188 This review is written at the time of the twentieth anniversary of the discovery of high-temperature superconductors, which, nearly coincides with the important discovery of the superfluid phases of ultracold trapped fermionic atoms. We show how these two subjects have much in common. Both have been addressed from the perspective of the BCS–Bose–Einstein condensation (BEC) crossover scenario, which is designed to treat short coherence length superfluids with transition temperatures which are «high», with respect to the Fermi energy. A generalized mean field treatment of BCS–BEC crossover at general temperatures T, based on the BCS–Leggett ground state, has met with remarkable success in the fermionic atomic systems. Here we summarize this success in the context of four different cold atom experiments, all of which provide indications, direct or indirect, for the existence of a pseudogap. This scenario also provides a physical picture of the pseudogap phase in the underdoped cuprates which is a central focus of high Tc research. We summarize successful applications of BCS–BEC crossover to key experiments in high Tc systems including the phase diagram, specific heat, and vortex core STM data, along with the Nernst effect, and exciting recent data on the superfluid density in very underdoped samples. We gratefully acknowledge the help of our many close collaborators over the years: Jiri Maly, Boldiz ar Jank, Ioan Kosztin, Ying-Jer Kao, Andrew Iyengar, Shina Tan, and Yan He. We also thank our co-authors John Thomas, Andrey Turlapov and Joe Kinast, as well as Thomas Lemberger, Brent Boyce, Joshua Milstein, Maria Luisa Chiofalo, and Murray Holland. This work was supported by NSF-MRSEC Grant No. DMR-0213765 (JS,ST and KL), NSF Grant No. DMR0094981 and JHU-TIPAC (QC). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Pseudogap Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) Article published earlier |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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DSpace DC |
| title |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) |
| spellingShingle |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) Qijin Chen Stajic, J. Levin, K. Pseudogap |
| title_short |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) |
| title_full |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) |
| title_fullStr |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) |
| title_full_unstemmed |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) |
| title_sort |
applying bcs–bec crossover theory to high-temperature superconductors and ultracold atomic fermi gases (review article) |
| author |
Qijin Chen Stajic, J. Levin, K. |
| author_facet |
Qijin Chen Stajic, J. Levin, K. |
| topic |
Pseudogap |
| topic_facet |
Pseudogap |
| publishDate |
2006 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
This review is written at the time of the twentieth anniversary of the discovery of high-temperature
superconductors, which, nearly coincides with the important discovery of the superfluid
phases of ultracold trapped fermionic atoms. We show how these two subjects have much in common.
Both have been addressed from the perspective of the BCS–Bose–Einstein condensation
(BEC) crossover scenario, which is designed to treat short coherence length superfluids with transition
temperatures which are «high», with respect to the Fermi energy. A generalized mean field
treatment of BCS–BEC crossover at general temperatures T, based on the BCS–Leggett ground
state, has met with remarkable success in the fermionic atomic systems. Here we summarize this
success in the context of four different cold atom experiments, all of which provide indications, direct
or indirect, for the existence of a pseudogap. This scenario also provides a physical picture of
the pseudogap phase in the underdoped cuprates which is a central focus of high Tc research. We
summarize successful applications of BCS–BEC crossover to key experiments in high Tc systems including
the phase diagram, specific heat, and vortex core STM data, along with the Nernst effect,
and exciting recent data on the superfluid density in very underdoped samples.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/120188 |
| citation_txt |
Applying BCS–BEC crossover theory to high-temperature superconductors and ultracold atomic Fermi gases (Review Article) / Qijin Chen, J. Stajic, K. Levin // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 538–560. — Бібліогр.: 121 назв. — англ. |
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2025-12-02T07:30:53Z |
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2025-12-02T07:30:53Z |
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