Magnetic order and superconductivity in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Y</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="italic">x</mml:mi></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">Pr</mml:mi></mml:mrow><mml:mrow><mm

Felner, I.; Yaron, U.; Nowik, I.; Bauminger, E. R.; Wolfus, Y.; Yacoby, E.R.; Hilscher, G.; Pillmayr, N.

doi:10.1103/physrevb.40.6739

Cited by 135 publications

(24 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This transition seems to be accompanied by a change from metallic to semiconducting characteristics. 10,12,14 Concurrently, an antiferromagnetic order of the copper atoms in the planes [15][16][17][18] and of the Pr atoms between the planes 15,16,18 sets in, resulting in Néel temperatures T N,Cu (2) Ϸ285 K and T N,Pr Ϸ 17 K for the fully Pr-substituted compound ͑xϭ1͒. Since PrBa 2 Cu 3 O 7Ϫy has all the structural features that are considered essential for high-temperature superconductivity in YBa 2 Cu 3 O 7Ϫy , such as CuO 2 planes and CuO 3 chains which lead to a doping of the planes, differences in the electronic structure and in the hole distribution between these structural units may reveal key parameters for hightemperature superconductivity in RBa 2 Cu 3 O 7Ϫy and, therefore, might help to close in on the mechanism that underlies superconductivity.…”

Section: Introductionmentioning

confidence: 99%

X-ray absorption spectroscopy of detwinnedPrxY1−

et al. 1997

View full text Add to dashboard Cite

UvA-DARE is a service provided by the library of the University of Amsterdam (http://dare.uva.nl) UvA-DARE (Digital Academic Repository)X-ray absorption spectroscopy of detwinned PrxY1-xBa2Cu3O7-y single crystals: electronic structure and hole distribution Merz, M.; Nücker, N.; Pellegrin, E.; Schweiss, P.; Schuppler, S.; Kielwein, M.; Knupfer, M.; Golden, M.S.; Fink, J. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Substituting Y in orthorhombic ͑Y,R)Ba 2 Cu 3 O 7 by any rare-earth element R has generally little effect on the superconducting properties. For RϭPr, however, superconductivity is completely suppressed. To understand this effect we have studied the unoccupied electronic structure of Pr x Y 1Ϫx Ba 2 Cu 3 O 7Ϫy (xϭ0.0, 0.4, 0.8) using polarization-dependent O 1s near-edge x-ray absorption spectroscopy of detwinned single crystals. We identify the hole states in the CuO 2 planes and the CuO 3 chains and give estimates of the relative contributions of the O 2p x , O 2p y , and O 2p z orbitals to these states. Along with the comparison of oxygen-rich (yϷ0.1) to the oxygen-depleted materials (yϷ0.9), this allows a test of the current theoretical explanations for the Pr-induced suppression of superconductivity. While we can rule out models involving hole filling or charge transfer between the planes and the chains, our data are consistent with approaches based on Pr 4f -O 2p hybridization. ͓S0163-1829͑97͒03313-4͔

show abstract

Section: Introductionmentioning

confidence: 99%

X-ray absorption spectroscopy of detwinnedPrxY1−

et al. 1997

View full text Add to dashboard Cite

show abstract

“…In most HTSC materials, the Cu ions bear a small paramagnetic moment of about 0.3-0.6 m B /Cu [42], which means C 0.04-0.08 emu/K mol G, thus the contribution of Cu ions can be neglected [32]. [3,[7][8][9][10][11][12][13][14][15][16][17][18][28][29][30][31][32][33][34].…”

Section: Resultsmentioning

confidence: 99%

“…One of the most enigmatic and controversial problems in the field of high-T c superconductivity is the suppression of superconductivity by the Pr ions in the RBa 2 Cu 3 O 7--d structure [1][2][3][4]. PrBCO shows highly semiconducting behavior.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Anomalous Pr Ordering for Pr 1222- and 2222-Type Structure Compounds

Luo

Ding

2001

phys. stat. sol. (a)

View full text Add to dashboard Cite

Subject classification: 74.25.Ha; 74.72.Jt; S10.15 Magnetic properties of the 1222-type structure compounds (Pb,M)(Sr,Pr) 2 (Pr,Ce) 2 Cu 2 O 9 (M ¼ Cu and Cd) and the 2222-type compound Bi 2 Sr 2 (Pr,Ce) 2 Cu 2 O 10 are reported. The magnetic susceptibility measurements reveal that Pr 3þ moments are ordered antiferromagnetically around T N (Pr) of 15-18 K for (Pb 0.5 M 0.5 )(Sr 0.9 Pr 0.1 ) 2 (Pr 0.7 Ce 0.3 ) 2 Cu 2 O 9 (M ¼ Cu and Cd), and at 22-24 K for Bi 2 Sr 2 (Pr 0.82 Ce 0.18 ) 2 Cu 2 O 10 . Except T N (Pr), there is no other anomalous peak appearing in the susceptibility curve, which is different from the other reported 1222 MSr 2 PrCu 2 O 10 (M ¼ Nb, Ta, Ga, In) systems. In the range of above T N (Pr) to room temperature, the susceptibility curve can be well fitted by a Curie-Weiss law with an effective magnetic moment m eff of 3.12, 2.79 and 3.09 m B per Pr ion for (Pb 0.5 Cu 0.5 )(Sr 0.9 Pr 0.1 ) 2 (Pr 0.7 Ce 0.3 ) 2 Cu 2 O 9 , (Pb 0.5 Cd 0.5 )(Sr 0.9 Pr 0.1 ) 2 (Pr 0.7 Ce 0.3 ) 2 Cu 2 O 9 and Bi 2 Sr 2 (Pr 0.82 Ce 0.18 ) 2 Cu 2 O 10 , respectively. The anomalous Pr magnetism and the suppression of superconductivity by Pr in the above compounds are discussed with the related Pr-containing 1212, 2212, 3212 and 214 compounds.

show abstract

“…PrBa 2 Cu 3 O 6+x is an insulator for every x and the Cu spins in the CuO 2 planes order antiferromagnetically ͑AFM͒ at temperatures of T N ϳ 350 K and 250 K for x = 0 and x =1, respectively. [6][7][8] As the temperature is further decreased, the Pr sublattice also undergoes a phase transition 9,10 in the temperature range T Pr ϳ 12-17 K depending on x, which appears as an anomaly in the temperature dependence of thermodynamic quantities. 11,12 Mössbauer spectroscopy, 13 neutron diffraction, 8,11,12 and NMR ͑Refs.…”

Section: Introductionmentioning

confidence: 98%

Theoretical model for the low-temperature ordering of Pr inPrBa2Cu3O6+x

Kiss

Simón

2010

Phys. Rev. B

View full text Add to dashboard Cite

Theoretical model is presented to describe the anomalous ordered phase of Pr ions in PrBa 2 Cu 3 O 6+x below T Pr Ϸ 12-17 K. The model considers the Pr multipole degrees of freedom and coupling between the Cu and Pr subsystems. We identify the symmetry allowed coupling of Cu and Pr ions and conclude that only an ab-plane Pr dipole ordering can explain the Cu spin rotation observed at T Pr by neutron diffraction by Boothroyd et al. ͓Phys. Rev. Lett. 78, 130 ͑1997͔͒. A substantial enhancement of the Pr ordering temperature is shown to arise from the Cu-Pr coupling which is the key for the anomalous magnetic behavior in PrBa 2 Cu 3 O 6+x .

show abstract

Magnetic order and superconductivity inY1−xPr

Cited by 135 publications

References 16 publications

X-ray absorption spectroscopy of detwinnedPrxY1−

X-ray absorption spectroscopy of detwinnedPrxY1−

Anomalous Pr Ordering for Pr 1222- and 2222-Type Structure Compounds

Theoretical model for the low-temperature ordering of Pr inPrBa2Cu3O6+x

Contact Info

Product

Resources

About