Relaxation mechanisms for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>6</mml:mn><mml:mn>3</mml:mn><mml:mo>,</mml:mo><mml:mn>6</mml:mn><mml:mn>5</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:math>nuclear quadrupole resonance in Zn-doped<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow>

Park, T. K.; Mean, B. J.; Lee, K. H.; Go, G. S.; Seo, Soonbeom; Han, Kee Sung; Lee, Moohee; Lee, H. S.; Kim, H. B.; Lee, W. C.

doi:10.1103/physrevb.59.11217

Cited by 10 publications

(3 citation statements)

References 15 publications

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“…It has been suggested that in layered cuprates, the presence of antiferromagnetic order in CuO 2 planes suppresses the superconductivity and this effect becomes more prominent when the number of CuO 2 planes increases beyond three [1][2][3][4][5][6][7]. The results from nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements show the suppression of antiferromagnetic spin correlation by Zn substitution in various high T c superconductors [8][9][10][11]. Therefore, it is expected to be true in Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4 O 12-δ superconductor that Zn substitu-tion suppresses the antiferromagnetic order in conducting planes.…”

Section: Introductionmentioning

confidence: 99%

“…The motivation of present work is to reduce the antiferromagnetic order in CuO 2 planes and also to observe what will happen with the superconductivity when charge stripe formation mechanism is quenched by the substitution of 3d 10 Zn atoms having zero remnant spins at 3 9 d Cu atoms in CuO 2 planes of Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4 O 12-δ high T c superconductors. Also we would like to observe the role of carriers in bringing about the superconductivity in Zn substituted Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4 O 12-δ superconductor.…”

Section: Introductionmentioning

confidence: 99%

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Homogeneous distribution of carriers in the conducting planes by Zn substitution at Cu sites in Cu0.5Tl0.5Ba2Ca3Cu4O12−δ superconductors

Mumtaz

Khan

2010

Low Temperature Physics

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The effect of suppression of antiferromagnetic order and charge stripes formation mechanism, by Zn3d 10 (S = 0) substitution at Cu3d 9 (S = 1/2) sites in CuO 2 planes of Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4 O 12-δ , on superconductivity parameters is demonstrated. If antiferromagnetism and charge stripes have some role in bringing about superconductivity at a particular temperature, the doping of nonmagnetic Zn impurity would destroy it and hence the superconductivity. However we have observed enhanced superconducting properties with the increase of Zn doping in Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4 O 12-δ superconductor. The decreased c-axis length with the increase of Zn doping improves interlayer coupling and hence the three-dimensional conductivity in the unit cell. The role of charge carriers in CuO 2 planes of Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4-y Zn y O 12-δ in bringing about superconductivity has also been explained. PACS: 74.70.-b Superconducting materials other than cuprates; 74.62.Bf Effects of material synthesis, crystal structure, and chemical composition; 74.25.Uv Vortex phases (includes vortex lattices, vortex liquids, and vortex glasses). Keywords: Cu 0.5 Tl 0.5 Ba 2 Ca 3 Cu 4-y Zn y O 12-δ superconductors, antiferromagnetism, charge stripes, charge carriers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Homogeneous distribution of carriers in the conducting planes by Zn substitution at Cu sites in Cu0.5Tl0.5Ba2Ca3Cu4O12−δ superconductors

Mumtaz

Khan

2010

Low Temperature Physics

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“…The existence of anti-ferromagnetically aligned spins reduces the mobile carriers density and promotes the inhomogeneous carriers doping in the inner and outer planes of the cuprates. The results from nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements show the suppression of anti-ferromagnetic spin correlation by Zn substitution in various high-T c superconductors [8][9][10][11], which resulted in decreased critical temperature in these compounds with Zn doping. Identical mechanism of T c suppression is, therefore, expected in Cu 0.5 Tl 0.5 Ba 2 Ca 2 Cu 3 O 10−δ high-T c superconductors with the substitution of Zn.…”

Section: Introductionmentioning

confidence: 99%

Improvement of superconductivity with the reduced anti-ferromagnetism in Zn-doped CuTl-1223 superconductors

Mumtaz¹,

Khan²

2009

Phys. Scr.

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The effect of suppression of anti-ferromagnetic order with the substitution of Zn 3d 10 (S = 0) at Cu 3d 9 (S = 1/2) sites in CuO 2 planes of Cu 0.5 Tl 0.5 Ba 2 Ca 2 Cu 3 O 10−δ (CuTl-1223) superconductors has been discussed. It has been demonstrated from the comparison of our results with the previously published data that Zn doping suppresses anti-ferromagnetism and enhances superconductivity. The decreased c-axis length with the increased Zn doping has been found to improve the interplane coupling and hence enhance the three-dimensional (3D) conductivity in the unit cell. The role of charge carriers in CuO 2 planes of Cu 0.5 Tl 0.5 Ba 2 Ca 2 Cu 3− y Zn y O 10−δ in bringing about superconductivity has also been explained.

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NQRS Data for Ba2Cu2.91O7YZn0.09 (Subst. No. 0284)

Chihara¹,

Nakamura²

2010

Landolt-Börnstein - Group III Condensed Matter

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Relaxation mechanisms for63,65Cunuclear quadrupole resonance in Zn-dopedYBa

Cited by 10 publications

References 15 publications

Homogeneous distribution of carriers in the conducting planes by Zn substitution at Cu sites in Cu0.5Tl0.5Ba2Ca3Cu4O12−δ superconductors

Homogeneous distribution of carriers in the conducting planes by Zn substitution at Cu sites in Cu0.5Tl0.5Ba2Ca3Cu4O12−δ superconductors

Improvement of superconductivity with the reduced anti-ferromagnetism in Zn-doped CuTl-1223 superconductors

NQRS Data for Ba2Cu2.91O7YZn0.09 (Subst. No. 0284)

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