High temperature superconducting with two doping atoms in La-doped Bi-2201 and Y-doped Bi-2212

Roeser, Hans─Peter; Huber, Felix; Schoenermark, M.F. von; Nikoghosyan, A.S.

doi:10.1016/j.actaastro.2009.02.004

Cited by 12 publications

(9 citation statements)

References 16 publications

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“…(1) between the doping structure value (2x) 2 and T c [4,5]. We have chosen the Ntype cuprates Pr 1− LaCe CuO 4− (PLCCO) and Nd 2− Ce CuO 4− (NCCO) with Ce 4+ doping and oxygen deficiency, because they have been studied in great detail.…”

Section: Introductionmentioning

confidence: 99%

Doping patterns in N-type high temperature superconductors PLCCO and NCCO

Roeser¹,

Huber²,

Schoenermark³

et al. 2009

Acta Astronautica

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Section: Introductionmentioning

confidence: 99%

Doping patterns in N-type high temperature superconductors PLCCO and NCCO

Roeser¹,

Huber²,

Schoenermark³

et al. 2009

Acta Astronautica

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“…The theoretical slope is m = h 2 /(2πk B M L ) = 3.02586 × 10 −18 m 2 K. The datapoints (•) showing the various superconducting materials stem from the present work and Refs. [9][10][11][12][13]68]. The calculations performed cover p-type, as well as n-type superconductors, copper-based ones, as well as several IBS materials.…”

Section: (Re)bco Compoundsmentioning

confidence: 99%

“…Thus, we have a double doping by Nd and the oxygen content in this system. To describe this double-doping effect, Roeser et al [68] were calculating the doping distances for both contributions separately, and then put the two doping patterns together like a Moiré effect. The resulting characteristic distance, x, describing the T c value of such a compound is then much larger than those of the two individual contributions.…”

Section: Effect Of Lre-ba-solid Solution and The Spatial Variation Of T Cmentioning

confidence: 99%

(RE)Ba2Cu3O7−δ and the Roeser-Huber Formula

Koblischka-Veneva

Koblischka

2021

Materials

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We apply the Roeser–Huber formula to the (RE)Ba2Cu3O7−δ (REBCO with RE= rare earths) high-Tc superconducting material class to calculate the superconducting transition temperature, Tc, using the electronic configuration and the crystallographic data. In a former publication (H. P. Roeser et al., Acta Astronautica 2008, 62, 733–736), the basic idea was described and Tc was successfully calculated for the YBa2Cu3O7−δ compound with two oxygen doping levels δ= 0.04 and 0.45, but several open questions remained. One of the problems remaining was the determination of Tc for the δ= 0.45 sample, which can be explained regarding the various oxygen arrangements being possible within the copper-oxide plane. Having established this proper relation and using the various crystallographic data on the REBCO system available in the literature, we show that the Roeser–Huber equation is capable to calculate the Tc of the various REBCO compounds and the effects of strain and pressure on Tc, when preparing thin film samples. Furthermore, the characteristic length, x, determined for the REBCO systems sheds light on the size of the δTc-pinning sites being responsible for additional flux pinning and the peak effect.

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“…The double doping concept has already been introduced by the authors [4][5][6], and we will use the same nomenclature for this compound. The oxygen ) and x 3 represents positions with unit cells containing both.…”

Section: Optimum Doping Of La 2− Ca 1+ Cu 2 O 6+dmentioning

confidence: 99%

“…In this paper we will analyze the crystal structure of the double-doped La 2− Ca 1+ Cu 2 O 6+ material and tie it to the correlation shown in Eq. (1) between the doping structure value (2x) 2 and T c as detailed in prior publications [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%