Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4589
Title: Implications of tunneling studies on high-Tc cuprates: Superconducting gap and pseudogap
Authors: Miyakawa, Nobuaki
Zasadzinski, John F.
Oonuki, S.
Asano, M.
Henmi, D.
Kaneko, Tsutomu
Özyüzer, Lütfi
Gray, Kenneth E.
Özyüzer, Lütfi
Izmir Institute of Technology. Physics
Keywords: Doping dependence
HTSC
Pseudogap
Superconducting gap
Tunneling (Physics)
Oxide superconductors
Issue Date: Nov-2001
Publisher: Elsevier Ltd.
Source: Miyakawa, N., Zasadzinski, J. F., Oonuki, S., Asano, M., Henmi, D., Kaneko, T., Özyüzer, L., and Gray, K. E. (2001). Implications of tunneling studies on high-Tc cuprates: Superconducting gap and pseudogap. Physica C: Superconductivity and its Applications, 364-365, 475-479. doi:10.1016/S0921-4534(01)00824-3
Abstract: Tunneling spectra have been measured on high-Tc cuprates including single crystals Bi2Sr2-xLaxCuO6+δ (Bi2201) and Bi2Sr2CaCu2O8+δ (Bi2212) using superconductor-insulator-normal metal point contact or superconductor-insulator-superconductor break junction methods. The doping dependence of the energy gap parameter is similar in both Bi2212 and Bi2201, increasing monotonically to very large values in the underdoped regime even as Tc decreases. This doping dependence of superconducting gap is similar to that of pseudogap temperature, T*, indicating this is consistent with the scenario whereby the low-energy pseudogap is due to some type of precursor of superconductivity. The high-energy feature observed as the hump structure may be another kind of pseudogap whose energy scale is much larger than superconducting gap, and it may be magnetic in origin.
URI: http://doi.org/10.1016/S0921-4534(01)00824-3
http://hdl.handle.net/11147/4589
ISSN: 0921-4534
0921-4534
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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