Effect of structural relaxation on the metal–insulator transition in heavily underdoped YBa 2 Cu 3 O 7−δ single crystals

R.V. Vovk; O.V. Dobrovolskiy; Z.F. Nazyrov; K.A. Kotvitskaya; Alexander Chroneos

doi:10.1007/s10909-015-1304-z

Effect of structural relaxation on the metal–insulator transition in heavily underdoped YBa 2 Cu 3 O 7−δ single crystals

R.V. Vovk, O.V. Dobrovolskiy, Z.F. Nazyrov, K.A. Kotvitskaya, Alexander Chroneos

Research output: Contribution to journal › Article

Abstract

We report the results of a study of the effect of structural relaxation on the basal-plane conductivity of heavily underdoped high- Tc YBa 2 Cu 3 O 7−δ single crystals. An increase of the oxygen deficiency in YBa 2 Cu 3 O 7−δ has been found to strengthen localization effects and to lead to the realization of a transition of the metal–insulator type, which always precedes the superconducting transition. In addition, a 5-day room-temperature annealing of the samples has been revealed to result in a notable shift of the metal–insulator transition point toward higher temperatures.

Original language	English
Pages (from-to)	277-283
Journal	Journal of Low Temperature Physics
Volume	180
Issue number	3-4
DOIs	https://doi.org/10.1007/s10909-015-1304-z
Publication status	Published - 2015

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The full text of this item is not available from the repository.
The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-015-1304-z.

Keywords

Annealing
Metal–insulator transition
Superconducting cuprates

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title = "Effect of structural relaxation on the metal–insulator transition in heavily underdoped YBa 2 Cu 3 O 7−δ single crystals",

abstract = "We report the results of a study of the effect of structural relaxation on the basal-plane conductivity of heavily underdoped high- Tc YBa 2 Cu 3 O 7−δ single crystals. An increase of the oxygen deficiency in YBa 2 Cu 3 O 7−δ has been found to strengthen localization effects and to lead to the realization of a transition of the metal–insulator type, which always precedes the superconducting transition. In addition, a 5-day room-temperature annealing of the samples has been revealed to result in a notable shift of the metal–insulator transition point toward higher temperatures. ",

keywords = "Annealing, Metal–insulator transition, Superconducting cuprates",

author = "R.V. Vovk and O.V. Dobrovolskiy and Z.F. Nazyrov and K.A. Kotvitskaya and Alexander Chroneos",

note = "The full text of this item is not available from the repository. The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-015-1304-z.",

year = "2015",

doi = "10.1007/s10909-015-1304-z",

language = "English",

volume = "180",

pages = "277--283",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer Verlag",

number = "3-4",

}

TY - JOUR

T1 - Effect of structural relaxation on the metal–insulator transition in heavily underdoped YBa 2 Cu 3 O 7−δ single crystals

AU - Vovk, R.V.

AU - Dobrovolskiy, O.V.

AU - Nazyrov, Z.F.

AU - Kotvitskaya, K.A.

AU - Chroneos, Alexander

N1 - The full text of this item is not available from the repository. The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-015-1304-z.

PY - 2015

Y1 - 2015

N2 - We report the results of a study of the effect of structural relaxation on the basal-plane conductivity of heavily underdoped high- Tc YBa 2 Cu 3 O 7−δ single crystals. An increase of the oxygen deficiency in YBa 2 Cu 3 O 7−δ has been found to strengthen localization effects and to lead to the realization of a transition of the metal–insulator type, which always precedes the superconducting transition. In addition, a 5-day room-temperature annealing of the samples has been revealed to result in a notable shift of the metal–insulator transition point toward higher temperatures.

AB - We report the results of a study of the effect of structural relaxation on the basal-plane conductivity of heavily underdoped high- Tc YBa 2 Cu 3 O 7−δ single crystals. An increase of the oxygen deficiency in YBa 2 Cu 3 O 7−δ has been found to strengthen localization effects and to lead to the realization of a transition of the metal–insulator type, which always precedes the superconducting transition. In addition, a 5-day room-temperature annealing of the samples has been revealed to result in a notable shift of the metal–insulator transition point toward higher temperatures.

KW - Annealing

KW - Metal–insulator transition

KW - Superconducting cuprates

U2 - 10.1007/s10909-015-1304-z

DO - 10.1007/s10909-015-1304-z

M3 - Article

SN - 0022-2291

SN - 1573-7357

VL - 180

SP - 277

EP - 283

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 3-4

ER -

Effect of structural relaxation on the metal–insulator transition in heavily underdoped YBa 2 Cu 3 O 7−δ single crystals

Abstract

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Keywords

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