<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>3</mml:mn><mml:mi>d</mml:mi></mml:math>-metal doping of the high-temperature superconducting perovskites La-Sr-Cu-O and Y-Ba-Cu-O

Tarascon, Jean‐Marie; Greene, L. H.; Barboux, P.; McKinnon, W. R.; Hull, G. W.; Orlando, T. P.; Delin, K. A.; Foner, S.; McNiff, E. J.

doi:10.1103/physrevb.36.8393

Cited by 298 publications

(75 citation statements)

References 20 publications

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“…It is interesting that superconductivity was realized by doping magnetic element cobalt into the superconducting-active FeAs layers. These results imply that iron based superconductors are tolerant to disorder in the active FeAs layers, unlike the HSTC compounds, where even a small concentration of substitution at the electronically active Cu site is seen to be detrimental to superconductivity [18]. Very recently, superconductivity in Ru substituted BaFe 2-x Ru x As 2 was found [19], furthermore, Ir and Pd substitution Fe sites in SrFe 2 As 2 compounds have also been exhibited superconductivity [20,21].…”

Section: Introductionmentioning

confidence: 99%

Superconductivity induced by doping Ru in SrFe2−xRuxAs2

Wang

Gao

et al. 2009

Physica C: Superconductivity

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Abstract:Using one-step solid state reaction method, we have successfully synthesized the superconductor SrFe 1-x Ru x As. X-ray diffraction indicates that the material has formed the ThCr 2 Si 2 -type structure with a space group I4/mmm. The systematic evolution of the lattice constants demonstrates that the Fe ions are successfully replaced by the Ru.By increasing the doping content of Ru, the spin-density-wave (SDW) transition in the parent compound is suppressed and superconductivity emerges. The maximum superconducting transition temperature is found at 13.5 K with the doping level of x = 0.7. The temperature dependence of DC magnetization confirms superconducting transitions at around 12 K. Our results indicate that similar to non-isoelectronic substitution, isoelectronic substitution contributes to changes in both the carrier concentration and internal pressure, and superconductivity could be induced by isoelectronic substitution.

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Section: Introductionmentioning

confidence: 99%

Superconductivity induced by doping Ru in SrFe2−xRuxAs2

Wang

Gao

et al. 2009

Physica C: Superconductivity

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“…Substitutions [25 ] for Cu, therefore, should lead to drastic effects on T~. Magnetic Ni ions, surprisingly, have a very modest effect on T~, whereas the effect produced by strictly divalent Zn ions is striking.…”

Section: Superconductivitymentioning

confidence: 99%

“…(In the case of formally trivalent-Cu compounds like LaCuO3, LaSrCuO4, and La2Lio.sCuo.504, there may be a substantial number of oxygen vacancies rather than trivalent-Cu ions.) Other substitutions [25] for Cu are also possible, and, in particular, Ni and Zn have been studied in connection with their influence on superconductivity. The substitution [26] of other rare earths into La2_,RExCuO 4 is possible, typically for x< 0.2, somewhere beyond which concentration the RE2CuO4 phase forms.…”

Section: (T=r(a-o)/xfl} R(b-o)mentioning

confidence: 99%

Properties of La2CuO4 and related compounds

Cheong

Thompson

Fisk

1989

Physica C: Superconductivity

119

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We review the crystal chemical, electronic, magnetic and superconducting properties of La2CuO4 and related planar-cuprate materials, with emphasis on single-crystal results. Although magnetism due to divalent copper ions clearly is evident in nonsuperconducting crystals, experiments do not reveal any direct relationship between localized copper spins and high temperature superconductivity. We also indicate areas where important information is lacking for our understanding of these materials.

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“…It should be noticed that O-T transition occurs before the appearance of impure phases, which reflects the intrinsic properties of Al and Co doped Y123 systems. For the same reason, the variation of lattice parameters shows that Zn ions enter mainly Cu(2) sites on CuO 2 planes [39,41], where the superconductivity occurs. It implies that the superconductivity suppressed by Zn doping should be stronger than by Al and Co doping.…”

Section: X-ray Diffraction Results and Cuprate Superconductivitymentioning

confidence: 99%

Superconductivity without dependence on valence electron density in (Al, Zn, Co) doped YBCO systems

Zhang

Wang

2010

Low Temperature Physics

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We adopted the x-ray diffraction, oxygen contents, positron annihilation technology and simulation methods to investigate systematically YBa 2 Cu 3-x (Al, Zn, Co) x O 7-δ (x = 0-0.5) cuprates. The experimental results and simulated calculations support the existence of cluster effect. Moreover, it is concluded that the cluster effect is an important factor on suppression of the superconductivity and the T c does not depend directly on the density of valence electron in the samples.

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3d-metal doping of the high-temperature superconducting perovskites La-Sr-Cu-O and Y-Ba-Cu-O

Cited by 298 publications

References 20 publications

Superconductivity induced by doping Ru in SrFe2−xRuxAs2

Superconductivity induced by doping Ru in SrFe2−xRuxAs2

Properties of La2CuO4 and related compounds

Superconductivity without dependence on valence electron density in (Al, Zn, Co) doped YBCO systems

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