Ion-size effect on Tm and Tc in (R1−xPrx)Ba2Cu3O7 systems (R = Yb, Tm, Er, Ho, Dy, Gd, Eu, Sm, Nd and Y)

Guan, Wei; Chen, Ying-Cheng; Wei, J.Y.T.; Xu, Yu; Wu, Maw–Kuen

doi:10.1016/0921-4534(93)90860-s

Cited by 27 publications

(6 citation statements)

References 14 publications

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“…The values are similar to those for R 0.2 Pr 0.8 Ba 2 Cu 3 O 7 , with RϭNd, Sm, Eu, Y, Yb, and Lu, but smaller than RϭGd, Dy, Ho, Er, and Tm. 7 The low temperature deviation indicates that Pr 3ϩ moments are ordered antiferromagnetically around T N (Pr) of 17 K, which is better determined by its derivative susceptibility curve d m /dT, which is shown in the inset of Fig. 3 16 The low temperature specific heat C(T) for La 0.7 Pr 0.3 Ba 2 Cu 3 O 7 compound, as shown in Fig.…”

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 98%

“…Beyond a critical Pr concentration x cr , the superconductivity is quenched and the system becomes insulating and displays magnetic ordering of Pr and Cu sublattices. [4][5][6][7] Thus the R 1Ϫx Pr x Ba 2 Cu 3 O 7 system can exhibit either SC or AFM ordering. The results of a systematic study on R 1Ϫx Pr x Ba 2 Cu 3 O 7 systems ͑RϭY, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu͒ show that both T c (xϽx cr ) and T N (Pr)(xϾx cr ) are affected by the size of the R ion.…”

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 99%

“…The results of a systematic study on R 1Ϫx Pr x Ba 2 Cu 3 O 7 systems ͑RϭY, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu͒ show that both T c (xϽx cr ) and T N (Pr)(xϾx cr ) are affected by the size of the R ion. 7 The larger the ionic size difference between R and Pr ions, the lesser T c decreases, and the larger the critical Pr concentration x cr . T N (Pr) was inversely related to T c .…”

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 99%

“…T N (Pr) was inversely related to T c . [5][6][7] However, the coexistence of SC and AFM in some region near the metallic insulating transition is still controversial.…”

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 99%

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Coexistence of superconductivity and antiferromagnetism in the La1−xPrxBa2Cu3O7 system

Luo

Ding

2001

Journal of Applied Physics

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Structural, magnetic, and calorimetric properties are reported for the La1−xPrxBa2Cu3O7 solid solution. The structure remains orthorhombic with lattice parameter increases from a=0.3872, b=0.3927, and c=1.1709 nm for PrBa2Cu3O7 to a=0.3903, b=0.3944, and c=1.1801 nm for LaBa2Cu3O7. Substitution of Pr for La depresses Tc from 90 to 52 K for La0.5Pr0.5Ba2Cu3O7, which was reported to be a nonsuperconductor. The Pr antiferromagnetic ordering temperature TN decreases monotonically from 18 K for PrBa2Cu3O7 to 6 K for La0.8Pr0.2Ba2Cu3O7. Thus there is a large range of coexistence of superconductivity and antiferromagnetism for 0.2⩽x⩽0.5. The superconductivity and anomalous Pr ordering will be discussed with the R1−xPrxBa2Cu3O7 systems (R=Y, Nd–Lu).

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Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 98%

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 99%

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 99%

“…T N (Pr) was inversely related to T c . [5][6][7] However, the coexistence of SC and AFM in some region near the metallic insulating transition is still controversial.…”

Section: Department Of Physics and National Laboratory Of Solid Statementioning

confidence: 99%

See 2 more Smart Citations

Coexistence of superconductivity and antiferromagnetism in the La1−xPrxBa2Cu3O7 system

Luo

Ding

2001

Journal of Applied Physics

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“…1 C ). In YPrBCO, the concentration of mobile carriers in the CuO 2 planes is controlled using the unique ability of low-energy Pr 4 f orbitals to effectively sequester holes from Cu 3 d x 2 − y 2 –O 2 p σ states ( 33 – 35 ). Namely, Pr 4 f z ( x 2 − y 2 ) orbitals hybridize with O 2 p π orbitals to form a Pr 4 f z ( x 2 − y 2 ) –O 2 p π state ( 36 ), which binds mobile holes from the CuO 2 planes to the Pr sites ( 37 ).…”

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confidence: 99%

Discovery of charge order in a cuprate Mott insulator

Kang

Zhang

Schierle

et al. 2023

Proc. Natl. Acad. Sci. U.S.A.

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Copper oxide superconductors universally exhibit multiple forms of electronically ordered phases that break the native translational symmetry of the CuO 2 planes. In underdoped cuprates with correlated metallic ground states, charge/spin stripes and incommensurate charge density waves (CDWs) have been experimentally observed over the years, while early theoretical studies also predicted the emergence of a Coulomb-frustrated ‘charge crystal’ phase in the very lightly doped, insulating limit of CuO 2 planes. Here, we search for signatures of CDW order in very lightly hole-doped cuprates from the 123 family R Ba 2 Cu 3 O 7 − δ ( R BCO; R : Y or rare earth), by using resonant X-ray scattering, electron transport, and muon spin rotation measurements to resolve the electronic and magnetic ground states fully. Specifically, Pr is used to substitute Y at the R -site to systematically suppress the superconductivity and access the extremely low hole-doping regime of the cuprate phase diagram without changing the oxygen stoichiometry. X-ray scattering data taken on Pr-doped YBCO thin films reveal an in-plane CDW order that follows the same linear evolution of wave vector versus hole concentration as oxygen-underdoped YBCO but extends all the way to the insulating and magnetically ordered Mott limit. Combined with the recent observation of charge crystal phase on an insulating surface of Bi 2 Sr 2 CaCu 2 O 8 + z , our results in R BCO suggest that this electronic symmetry breaking is universally present in very lightly doped CuO 2 planes. These findings bridge the gap between the Mott insulating state and the underdoped metallic state and underscore the prominent role that Coulomb-frustrated electronic phase separation plays among all cuprates.

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Structural, magnetic and electrical studies on Pr(Ba1−xSrx)2Cu2NbO8−y

Yang

Tsay

1994

Physica C: Superconductivity

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Ion-size effect on Tm and Tc in (R1−xPrx)Ba2Cu3O7 systems (R = Yb, Tm, Er, Ho, Dy, Gd, Eu, Sm, Nd and Y)

Cited by 27 publications

References 14 publications

Coexistence of superconductivity and antiferromagnetism in the La1−xPrxBa2Cu3O7 system

Coexistence of superconductivity and antiferromagnetism in the La1−xPrxBa2Cu3O7 system

Discovery of charge order in a cuprate Mott insulator

Structural, magnetic and electrical studies on Pr(Ba1−xSrx)2Cu2NbO8−y

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