The ab-plane optical conductivity of high-T{sub c} superconductors
- Univ. of Florida, Gainesville, FL (United States)
- McMaster Univ., Hamilton, Ontario (Canada); and others
There is anisotropy in the ab-plane optical properties of the high-temperature superconductors, both in the normal state and in the superconducting state. In both states, two components appear in the optical conductivity: a free carrier part and a {open_quotes}midinfrared{close_quotes} component. Below T{sub c}, the free carriers form the superconducting condensate. In YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}, the anisotropy of the penetration depth shows that the chains contribute strongly to this superfluid. In Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8}, where chains are absent, there is still ab plane anisotropy. Below T{sub c} a finite absorption parallel b remains at frequencies as small as 20 meV. This anisotropy could be due to anisotropy either of the superconducting gap or the midinfrared component.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 207182
- Journal Information:
- Journal of Superconductivity, Journal Name: Journal of Superconductivity Journal Issue: 5 Vol. 8; ISSN 0896-1107; ISSN JOUSEH
- Country of Publication:
- United States
- Language:
- English
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