Crystal-field splittings and magnetic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Pr</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Nd</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow>

Soderholm, L.; Loong, C.‐K.; Goodman, G. L.; Da̧browski, B.

doi:10.1103/physrevb.43.7923

Cited by 181 publications

(58 citation statements)

References 46 publications

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“…In the layered copper oxide superconducting systems, the electronic state of Pr 3+ ions (leading to magnetic or nonmagnetic ground states) was key to whether copper-based superconductivity evolved on cooling [28][29][30]. This has prompted significant research into possible coupling between the lanthanide and transition metal sublattices in layered systems [24,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Crystal field excitations and magnons: Their roles in oxyselenides Pr2O2M2OSe2(

et al. 2017

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We present the results of neutron scattering experiments to study the crystal and magnetic structures of the Mottinsulating transition metal oxyselenides Pr 2 O 2 M 2 OSe 2 (M = Mn, Fe). The structural role of the non-Kramers Pr 3+ ion was investigated, and analysis of Pr 3+ crystal field excitations was performed. Long-range order of Pr 3+ moments in Pr 2 O 2 Fe 2 OSe 2 can be induced by an applied magnetic field.

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Section: Introductionmentioning

confidence: 99%

Crystal field excitations and magnons: Their roles in oxyselenides Pr2O2M2OSe2(

et al. 2017

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“…On closer inspection, however, it has been shown that these results can also be understood as an indication for Pr 3ϩ . For example, So "derholm et al 25 and Hilscher et al 26 were able to explain the reduced magnetic moment, taking a crystal field splitting of the 3 H 4 ground state of Pr 3ϩ into consideration. On the other hand, most band structure calculations 27 and highenergy spectroscopy experiments support a trivalent Pr atom.…”

Section: Introductionmentioning

confidence: 99%

X-ray absorption spectroscopy of detwinnedPrxY1−

et al. 1997

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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

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“…Of these, the direct pair breaking by Abrikosov-Gor'kov ͑AG͒ exchange scattering, 45,46 magnetic hybridization leading to pair breaking, 47 subtle magnetic interactions 48 are centered on the valence state of Pr, which is under controversy. For example, magnetic 5 and chemical substitution 6,7 studies point to the tetravalent state while x-ray photoelectron spectroscopy ͑XPS͒ 8 and x-ray absorption near-edge spectroscopy 9 ͑XANES͒ investigations suggest the trivalent state.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of critical Pr ion concentration (xcr) in (La1−xPrx)Ba2Cu3Oz

Murugesan

Ishigaki

Kuwano

et al. 1999

Journal of Applied Physics

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The substitutional effect of Pr ion for La in (La 1Ϫx Pr x )Ba 2 Cu 3 O z bulk samples prepared under modified synthesis condition has been studied. Low field magnetization studies showed that superconductivity is retained up to the critical Pr ion concentration, x cr ϭ0.40. The effective magnetic moment of Pr 3ϩ free ion is very low in the present series of compounds. Results of X-ray absorption near-edge structure spectra for the series of (La 1Ϫx Pr x )Ba 2 Cu 3 O z compounds with 0.00ϽxϽ0.60 reveal that the doped Pr ion reduces hole concentration within the CuO 2 planes, leading to a destruction of superconductivity.

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Crystal-field splittings and magnetic properties ofPr3+andNd3+

Cited by 181 publications

References 46 publications

Crystal field excitations and magnons: Their roles in oxyselenides Pr2O2M2OSe2(

Crystal field excitations and magnons: Their roles in oxyselenides Pr2O2M2OSe2(

X-ray absorption spectroscopy of detwinnedPrxY1−

Enhancement of critical Pr ion concentration (xcr) in (La1−xPrx)Ba2Cu3Oz

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