On the softening effect in superconducting state

Lazarev, B.G.; Starodubov, Ya. D.; Sergeeva, G. G.; Lazareva, M. B.; Chirkina, L.A.; Okovit, V.S.; Karaseva, Ye. V.; Frolov, V. A.; Chechkin, Aleksei V.; Petrenko, V.T.; Tikhonovskii, M. A.

doi:10.1007/bf02562737

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…In the presence of a field the spins order, and the vortexlike excitations are manifested in the Nernst effect, 128,127 and after the magnetic field is switched off they can lead to a weak residual magnetization of the sample in the pseudogap state. 128,129 Thus for ␦ sc Ͻ␦Ͻ␦ opt the CuO planes of an underdoped cuprate HTSC are found in a substantially nonuniform state with different local densities of charge carriers and with bosonic and magnetic clusters both in the case of a quasitwo-dimensional character of the superconducting fluctuations T cr (␦)ϾTϾT 3D (␦) and also in the region of the quasitwo-dimensional superconducting state T BKT уTуT g . Direct evidence of local pairing in underdoped cuprate HTSCs with cluster sizes of ϳ14 Å was obtained recently in scanning tunneling microscope measurements of the local density of states and the energy of the superconducting gap in the superconductor Bi 2 Sr 2 CaCu 2 O 8ϩx ͑Ref.…”

Section: Repeated Dynamical Reduction Of the Dimensionality Of The Psmentioning

confidence: 99%

Jahn–Teller effect in quasi-two-dimensional doped cuprate antiferromagnets and underdoped high-Tc superconductors (Review)

Sergeeva

Soroka

2004

Low Temperature Physics

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Section: Repeated Dynamical Reduction Of the Dimensionality Of The Psmentioning

confidence: 99%

Jahn–Teller effect in quasi-two-dimensional doped cuprate antiferromagnets and underdoped high-Tc superconductors (Review)

Sergeeva

Soroka

2004

Low Temperature Physics

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Inhomogeneity of the pseudogap state of a doped layered cuprate antiferromagnet

Sergeeva

2003

Low Temperature Physics

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The features of the pseudogap state in doped layered cuprate antiferromagnets and underdoped high-Tc superconductors (HTSCs) are investigated. It is shown that the transition to the pseudogap state is a dimensional crossover from three-dimensional motion to two-dimensional motion of charges in the copper–oxygen planes, which leads to the coexistence of light charge carriers and Jahn–Teller polarons and to the development of strong local correlations, as are characteristic for two-dimensional doped Mott–Hubbard insulators. In a doped antiferromagnet the d-wave pairing of light charge carriers and Jahn–Teller polarons leads to the formation of magnetic and bosonic clusters, i.e., substantial inhomogeneity of the copper–oxygen planes arises. It is found that the change in the properties of a doped layered cuprate antiferromagnetic insulator and in the metallic and superconducting states of an underdoped HTSC with decreasing temperature is due to a repeated dynamic reduction of their dimensionality. A model phase diagram in terms of the temperature and dopant concentration is proposed.

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On the softening effect in superconducting state

Cited by 2 publications

References 2 publications

Jahn–Teller effect in quasi-two-dimensional doped cuprate antiferromagnets and underdoped high-Tc superconductors (Review)

Jahn–Teller effect in quasi-two-dimensional doped cuprate antiferromagnets and underdoped high-Tc superconductors (Review)

Inhomogeneity of the pseudogap state of a doped layered cuprate antiferromagnet

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