Subthreshold defect formation in YBa₂Cu₃O₇₋δ at nonuniform heating of electron gas in electromagnetic field

• Published in: Поверхность
• Date: 2002
• Main Authors: Adonkin, V.T., Gorelov, B.M., Ogenko, V.M., Melnikov, V.S., Kevdina, I.B., Shantorovich, V.P., Shalyapina, G.M.
• Format: Article
• Language: English
• Published: Інститут хімії поверхні ім. О.О. Чуйка НАН України 2002
• Subjects: Surface properties of inorganic materials
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/126353
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Subthreshold defect formation in YBa₂Cu₃O₇₋δ at nonuniform heating of electron gas in electromagnetic field / V.T. Adonkin, B.M. Gorelov, V.M. Ogenko, V.S. Melnikov, I.B. Kevdina, V.P. Shantorovich, G.M. Shalyapina // Поверхность. — 2002. — Вип. 7-8. — С. 69-81. — Бібліогр.: 32 назв. — англ.

In YBa₂Cu₃O₇₋δ high temperature superconductors with δ<0.3 the irradiation by super high-frequency electromagnetic field with impulse power 10⁴-10⁶ W gives rise to a decrease of the rates of annihilation and capture of positrons, a growth of resistance, residual resistance, thermopower and the block of diffusive transitions of Au atoms, which are caused by the subthreshold defect formation in the intermediate layers. The irradiation effect is enhanced with rise of the number of defects in samples and does not depend on an impulse power. The defect formation is related to the excitation of low-frequency weakly damped collective excitations under irradiation, whose propagation through the crystal is accompanied by the Coulomb ejection of atoms from the lattice sites and the transformation and transport of defects.