Effect of Oxygen Redistribution on Temperature Dependence of Pseudo-Gap in Underdoped HoBa_{2}Cu_{3}O_{7-δ} Single Crystals

• Authors: R. Vovk , Z. Nazyrov , M. Obolenskii , V. Pinto Simoes , M. Januszczyk , J. Latosińska
• Languages of publication: EN

Abstracts

EN

The effect of annealing at room temperature on the excess conductivity of oxygen deficient HoBa_2Cu_{3}O_{7 - δ} single crystal is studied. It is shown that there is substantial extension of the interval of linear dependence ρ_{ab} (T) and narrowing of the temperature area of the pseudo-gap regime as a result of annealing. The excess conductivity satisfies the exponential temperature dependence in a wide temperature interval. The temperature dependence of the pseudogap is satisfactorily described by the BCS-BEC theoretical model.

Keywords

EN

74.72.-h

Discipline

• 74.72.-h: Cuprate superconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 3
• Pages: 512-515

Dates

published

2011-09

received

2011-01-07

(unknown)

2011-03-20

Contributors

author

R. Vovk

• Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

author

Z. Nazyrov

• Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

author

M. Obolenskii

• Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

author

V. Pinto Simoes

• IPA_Instituto Superior Autónomo de Estudos Politécnicos, Rua de Xabregas, 20, 1° 1900-440 Lisboa, Portugal

author

M. Januszczyk

• Institute of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

J. Latosińska

• Institute of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.120.512