Evaluation of oxygen isotope experiments on Pr-, Ca-, and Zn-substituted<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><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:

Soerensen, G.; Gygax̊, S.

doi:10.1103/physrevb.51.11848

Cited by 33 publications

(43 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The oxygen isotope effect of T c has been observed in a number of experiments [71,57,56,72,73]. Here we discuss the results obtained on Pr-doped and oxygen-depleted YBa 2 Cu 3 O 7−δ (YPrBCO and YBCO respectively).…”

Section: Oxygen Isotope Effect In High-t C Materialsmentioning

confidence: 74%

“…In addition, this decrease of T c is accompanied by an increase of the isotope coefficient (see Ref. [53,56] and Fig. 2).…”

Section: Zn-doped Ybamentioning

confidence: 85%

“…[74]). Secondly, as for Zn substitution, praesodimium changes the magnetic impurity concentration of the system [56,74]. Regarding the IE, these experimental facts imply that through the first effect, the non-adiabatic channel is activated, whereas the second effect leads us to consider the magnetic impurity channel for the calculation of α.…”

Section: The Critical Temperaturementioning

confidence: 94%

“…Fig. 2 displays the experimental results obtained for the oxygen isotope coefficient of Zn-doped YBCO [56,4] (normalized to α 0 ≃ 0.025 [57]). One can see from this figure that the agreement between the theoretical dependence α(T c ) and the experiment is very good.…”

Section: Zn-doped Ybamentioning

confidence: 99%

See 3 more Smart Citations

The Isotope Effect in Superconductors

Bill

Kresin

Wolf

1998

Pair Correlations in Many-Fermion Systems

View full text Add to dashboard Cite

We review some aspects of the isotope effect (IE) in superconductors. Our focus is on the influence of factors not related to the pairing mechanism. After summarizing the main results obtained for conventional superconductors, we review the effect of magnetic impurities, the proximity effect and non-adiabaticity on the value of the isotope coefficient (IC). We discuss the isotope effect of T c and of the penetration depth δ. The theory is applied to conventional and high-T c superconductors. Experimental results obtained for YBa 2 Cu 3 O 7−δ related materials (Zn and Pr-substituted as well as oxygen-depleted systems) and for La 2−x Sr x CuO 4 are discussed.

show abstract

Section: Oxygen Isotope Effect In High-t C Materialsmentioning

confidence: 74%

“…In addition, this decrease of T c is accompanied by an increase of the isotope coefficient (see Ref. [53,56] and Fig. 2).…”

Section: Zn-doped Ybamentioning

confidence: 85%

Section: The Critical Temperaturementioning

confidence: 94%

Section: Zn-doped Ybamentioning

confidence: 99%

See 2 more Smart Citations

The Isotope Effect in Superconductors

Bill

Kresin

Wolf

1998

Pair Correlations in Many-Fermion Systems

View full text Add to dashboard Cite

show abstract

“…In high temperature superconductors (HTS) [1] the isotope effect [2][3][4] shows complex behaviour: it takes on very small values for optimally doped samples and increases with decreasing oxygent content δ in YBa 2 Cu 3 O 7−δ and decreasing transition temperature. Similar behaviour is observed in samples doped with such metals as Fe, Co, Zn, etc.…”

Section: Introductionmentioning

confidence: 99%

The Isotope Effect of Disordered Superconductors

Mierzyńska

Wysokiński

2004

Acta Phys. Pol. A

View full text Add to dashboard Cite

The isotope effects in disordered weak and strong coupling superconductors of different symmetries of the order parameter have been studied. We have found that even though weak localisation corrections to Eliashberg equations describe a strong degradation of transition temperature with disorder of s-wave superconductors, their influence on isotope coefficient is relatively weak. On the other hand the calculated change of relative isotope coefficient with T c /T c0 in homogeneous thin film materials is similar to that observed in high temperature superconductors.

show abstract

Effect of Pseudogap on the Isotope Exponent of High-Tc Superconductors

Udomsamuthirun

2001

phys. stat. sol. (b)

View full text Add to dashboard Cite

Subject classification: 74.20.Fg; S10.15 The purpose of this paper is to explain the unusual isotope coefficients of cuprates by considering the influence of a pseudogap and phononic and electronic interactions in weak-coupling limit. Exact analytic expressions of the isotope exponent (a) for the s-and d-wave pairing symmetry are derived. It is found that a can fit the experimental data well and that the presence of the pseudogap increases a in the low-T c region, but has no effect in the high-T c region.

show abstract

Evaluation of oxygen isotope experiments on Pr-, Ca-, and Zn-substitutedYBa2Cu3

Cited by 33 publications

References 18 publications

The Isotope Effect in Superconductors

The Isotope Effect in Superconductors

The Isotope Effect of Disordered Superconductors

Effect of Pseudogap on the Isotope Exponent of High-Tc Superconductors

Contact Info

Product

Resources

About