Observation of Berezinski-Kosterlitz-Thouless transition in PrYBaCuO/YBaCuO/PrYBaCuO trilayers

Vitali A. Gasparov, I. E. Batov, Qi Li, Chuhe Kwon

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

The temperature dependencies of electromagnetic penetration depth λa,b(T) and high-frequency losses Reσ(T) have been investigated using the radio-frequency (1-20 MHz) and microwave (30 GHz) surface impedance methods on 1 unit cell (UC) and 2UC-thick Y1Ba 2Cu3O7-x epitaxial films sandwiched between Pr0.6Y0.4Ba2Cu3O7-x epitaxial layers. It was observed that the λa,b -2(T) component exhibits a clear break near the critical temperature Tc from a linear BCS-like dependence at low temperatures, and a maximum in Reσ(T) close to the onset point of Lk -1(T). The break is destroyed in a very small perpendicular magnetic field (∼1 mT). This feature exhibit saturation as a function of the magnetic field in the range 3-5 mT. At the same time, no influence of the same H on the Reσ(T) dependence at microwave frequencies was detected. A huge increase in Tc (70% and 30% for 1UC and 2UC samples, respectively) as a function offrequency within the frequency range 1 MHz - 30 GHz was discovered. All these features are explained and discussed in the framework of dynamic theories of BKT transition.

Original languageEnglish (US)
Pages (from-to)391-402
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume2697
DOIs
StatePublished - Dec 1 1996

Fingerprint

Microwave
Magnetic Field
Magnetic fields
Dynamics (theory)
Epitaxial films
Microwave frequencies
Epitaxial layers
microwave frequencies
Critical Temperature
magnetic fields
Penetration
Range of data
Perpendicular
Temperature
Impedance
Saturation
critical temperature
radio frequencies
penetration
frequency ranges

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

@article{60ff7d85f34f41f698e8252b01fdc535,
title = "Observation of Berezinski-Kosterlitz-Thouless transition in PrYBaCuO/YBaCuO/PrYBaCuO trilayers",
abstract = "The temperature dependencies of electromagnetic penetration depth λa,b(T) and high-frequency losses Reσ(T) have been investigated using the radio-frequency (1-20 MHz) and microwave (30 GHz) surface impedance methods on 1 unit cell (UC) and 2UC-thick Y1Ba 2Cu3O7-x epitaxial films sandwiched between Pr0.6Y0.4Ba2Cu3O7-x epitaxial layers. It was observed that the λa,b -2(T) component exhibits a clear break near the critical temperature Tc from a linear BCS-like dependence at low temperatures, and a maximum in Reσ(T) close to the onset point of Lk -1(T). The break is destroyed in a very small perpendicular magnetic field (∼1 mT). This feature exhibit saturation as a function of the magnetic field in the range 3-5 mT. At the same time, no influence of the same H on the Reσ(T) dependence at microwave frequencies was detected. A huge increase in Tc (70{\%} and 30{\%} for 1UC and 2UC samples, respectively) as a function offrequency within the frequency range 1 MHz - 30 GHz was discovered. All these features are explained and discussed in the framework of dynamic theories of BKT transition.",
author = "Gasparov, {Vitali A.} and Batov, {I. E.} and Qi Li and Chuhe Kwon",
year = "1996",
month = "12",
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language = "English (US)",
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}

Observation of Berezinski-Kosterlitz-Thouless transition in PrYBaCuO/YBaCuO/PrYBaCuO trilayers. / Gasparov, Vitali A.; Batov, I. E.; Li, Qi; Kwon, Chuhe.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 2697, 01.12.1996, p. 391-402.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Observation of Berezinski-Kosterlitz-Thouless transition in PrYBaCuO/YBaCuO/PrYBaCuO trilayers

AU - Gasparov, Vitali A.

AU - Batov, I. E.

AU - Li, Qi

AU - Kwon, Chuhe

PY - 1996/12/1

Y1 - 1996/12/1

N2 - The temperature dependencies of electromagnetic penetration depth λa,b(T) and high-frequency losses Reσ(T) have been investigated using the radio-frequency (1-20 MHz) and microwave (30 GHz) surface impedance methods on 1 unit cell (UC) and 2UC-thick Y1Ba 2Cu3O7-x epitaxial films sandwiched between Pr0.6Y0.4Ba2Cu3O7-x epitaxial layers. It was observed that the λa,b -2(T) component exhibits a clear break near the critical temperature Tc from a linear BCS-like dependence at low temperatures, and a maximum in Reσ(T) close to the onset point of Lk -1(T). The break is destroyed in a very small perpendicular magnetic field (∼1 mT). This feature exhibit saturation as a function of the magnetic field in the range 3-5 mT. At the same time, no influence of the same H on the Reσ(T) dependence at microwave frequencies was detected. A huge increase in Tc (70% and 30% for 1UC and 2UC samples, respectively) as a function offrequency within the frequency range 1 MHz - 30 GHz was discovered. All these features are explained and discussed in the framework of dynamic theories of BKT transition.

AB - The temperature dependencies of electromagnetic penetration depth λa,b(T) and high-frequency losses Reσ(T) have been investigated using the radio-frequency (1-20 MHz) and microwave (30 GHz) surface impedance methods on 1 unit cell (UC) and 2UC-thick Y1Ba 2Cu3O7-x epitaxial films sandwiched between Pr0.6Y0.4Ba2Cu3O7-x epitaxial layers. It was observed that the λa,b -2(T) component exhibits a clear break near the critical temperature Tc from a linear BCS-like dependence at low temperatures, and a maximum in Reσ(T) close to the onset point of Lk -1(T). The break is destroyed in a very small perpendicular magnetic field (∼1 mT). This feature exhibit saturation as a function of the magnetic field in the range 3-5 mT. At the same time, no influence of the same H on the Reσ(T) dependence at microwave frequencies was detected. A huge increase in Tc (70% and 30% for 1UC and 2UC samples, respectively) as a function offrequency within the frequency range 1 MHz - 30 GHz was discovered. All these features are explained and discussed in the framework of dynamic theories of BKT transition.

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