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  Spin and charge excitations in artificial hole- and electron-doped infinite layer cuprate superconductors

Dellea, G., Minola, M., Galdi, A., Di Castro, D., Aruta, C., Brookes, N., et al. (2017). Spin and charge excitations in artificial hole- and electron-doped infinite layer cuprate superconductors. Physical Review B, 96(11): 115117.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-D0FA-D Version Permalink: https://hdl.handle.net/21.11116/0000-000E-D0FB-C
Genre: Journal Article

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 Creators:
Dellea, G., Author
Minola, M.1, Author
Galdi, A., Author
Di Castro, D., Author
Aruta, C., Author
Brookes, N., Author
Jia, C., Author
Mazzoli, C., Author
Sala, M., Author
Moritz, B., Author
Orgiani, P., Author
Schlom, D., Author
Tebano, A., Author
Balestrino, G., Author
Braicovich, L., Author
Devereaux, T., Author
Maritato, L., Author
Ghiringhelli, G., Author
Affiliations:
1Max Planck Society, ou_persistent13              

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 Abstract: The asymmetry between electron and hole doping in high critical-temperature superconducting (HTS) cuprates is key information for the understanding of Cooper pair formation mechanisms. Despite intensive studies on different cuprates, a comprehensive description of related magnetic and charge excitations is still fragmentary. In the present work, artificial cuprates were used to cover the entire phase diagram within the same HTS family. In particular, Cu L-3-edge resonant inelastic x-ray scattering (RIXS) measurements were performed on artificial n- and p-type infinite layer (IL) epitaxial films. Beside several similarities, RIXS spectra show noticeable differences in the evolution, with doping level, of magnetic and charge intensity and damping. Compatible trends can be found in spectra measured on bulk cuprates, as well as in theoretical calculations of the spin dynamical structure factor S(q,omega). The findings give a deeper insight into the evolution of collective excitations across the cuprate phase diagram, and on underlying general features, only connected to the doping type. Moreover, they pave the way to the exploration of general properties of HTS physics over a broad range of conditions, by means of artificial compounds not constrained by the thermodynamic limitations governing the chemical stability of bulk materials.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 735050
ISI: 000410176500003
 Degree: -

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Title: Physical Review B
Source Genre: Journal
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Publ. Info: COLLEGE PK : AMER PHYSICAL SOC
Pages: - Volume / Issue: 96 (11) Sequence Number: 115117 Start / End Page: - Identifier: ISSN: 2469-9950