The surface impedance of GdBa2Cu3O7−δ

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The surface impedance of GdBa2Cu3O7−δ. / Ormeno, Rodrigo; Hein, M.; Yang, G.; Gough, Colin.

In: Physica C Superconductivity, Vol. 341-348, No. Part 4, 01.11.2000, p. 2689-2690.

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@article{51108772cbf94e8982b939131ed83c6b,
title = "The surface impedance of GdBa2Cu3O7−δ",
abstract = "The complex surface impedance of a number of GdBa2Cu3O7−δ single crystals has been measured at 10, 15 and 21 GHz using a cavity perturbation technique. At low temperature a marked increase in the London penetration depth and surface resistance is observed associated with the paramagnetic and antiferromagnetic alignment of the Gd spins. The penetration depth has a sharp change in slope at the N{\'e}el temperature, TN ∼ 2.2K, and the real part of the conductivity peaks at a frequency dependent temperature slightly above TN. The observed temperature and frequency dependence can be described by a model which assumes a negligibly small interaction between the Gd spins and the electrons in the superconducting state, with a frequency dependent magnetic susceptibility and a Gd spin relaxation time τs being a strong function of temperature. Above TN, τs has a component varying as 1/(T − TN), while below TN it increases ∼ T−5.",
author = "Rodrigo Ormeno and M. Hein and G. Yang and Colin Gough",
year = "2000",
month = nov,
day = "1",
doi = "10.1016/S0921-4534(00)01477-5",
language = "English",
volume = "341-348",
pages = "2689--2690",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "Part 4",
note = "International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors, 6th ; Conference date: 01-01-2000",

}

RIS

TY - JOUR

T1 - The surface impedance of GdBa2Cu3O7−δ

AU - Ormeno, Rodrigo

AU - Hein, M.

AU - Yang, G.

AU - Gough, Colin

PY - 2000/11/1

Y1 - 2000/11/1

N2 - The complex surface impedance of a number of GdBa2Cu3O7−δ single crystals has been measured at 10, 15 and 21 GHz using a cavity perturbation technique. At low temperature a marked increase in the London penetration depth and surface resistance is observed associated with the paramagnetic and antiferromagnetic alignment of the Gd spins. The penetration depth has a sharp change in slope at the Néel temperature, TN ∼ 2.2K, and the real part of the conductivity peaks at a frequency dependent temperature slightly above TN. The observed temperature and frequency dependence can be described by a model which assumes a negligibly small interaction between the Gd spins and the electrons in the superconducting state, with a frequency dependent magnetic susceptibility and a Gd spin relaxation time τs being a strong function of temperature. Above TN, τs has a component varying as 1/(T − TN), while below TN it increases ∼ T−5.

AB - The complex surface impedance of a number of GdBa2Cu3O7−δ single crystals has been measured at 10, 15 and 21 GHz using a cavity perturbation technique. At low temperature a marked increase in the London penetration depth and surface resistance is observed associated with the paramagnetic and antiferromagnetic alignment of the Gd spins. The penetration depth has a sharp change in slope at the Néel temperature, TN ∼ 2.2K, and the real part of the conductivity peaks at a frequency dependent temperature slightly above TN. The observed temperature and frequency dependence can be described by a model which assumes a negligibly small interaction between the Gd spins and the electrons in the superconducting state, with a frequency dependent magnetic susceptibility and a Gd spin relaxation time τs being a strong function of temperature. Above TN, τs has a component varying as 1/(T − TN), while below TN it increases ∼ T−5.

U2 - 10.1016/S0921-4534(00)01477-5

DO - 10.1016/S0921-4534(00)01477-5

M3 - Article

VL - 341-348

SP - 2689

EP - 2690

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - Part 4

T2 - International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors, 6th

Y2 - 1 January 2000

ER -