English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Incommensurate spin correlations in highly oxidized cobaltates La2-xSrxCoO4

Li, Z. W., Drees, Y., Kuo, C. Y., Guo, H., Ricci, A., Lamago, D., et al. (2016). Incommensurate spin correlations in highly oxidized cobaltates La2-xSrxCoO4. Scientific Reports, 6: 25117, pp. 1-8. doi:10.1038/srep25117.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-C5D4-D Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D5A6-0
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Li, Z. W.1, Author              
Drees, Y.1, Author              
Kuo, C. Y.1, Author              
Guo, H.1, Author              
Ricci, A.2, Author
Lamago, D.2, Author
Sobolev, O.2, Author
Ruett, U.2, Author
Gutowski, O.2, Author
Pi, T. W.2, Author
Piovano, A.2, Author
Schmidt, W.2, Author
Mogare, K.3, Author              
Hu, Z.4, Author              
Tjeng, L. H.5, Author              
Komarek, A. C.6, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2External Organizations, ou_persistent22              
3Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
4Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              
5Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              
6Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863446              

Content

show
hide
Free keywords: -
 Abstract: We observe quasi-static incommensurate magnetic peaks in neutron scattering experiments on layered cobalt oxides La2-xSrxCoO4 with high Co oxidation states that have been reported to be paramagnetic. This enables us to measure the magnetic excitations in this highly hole-doped incommensurate regime and compare our results with those found in the low-doped incommensurate regime that exhibit hourglass magnetic spectra. The hourglass shape of magnetic excitations completely disappears given a high Sr doping. Moreover, broad low-energy excitations are found, which are not centered at the incommensurate magnetic peak positions but around the quarter-integer values that are typically exhibited by excitations in the checkerboard charge ordered phase. Our findings suggest that the strong inter-site exchange interactions in the undoped islands are critical for the emergence of hourglass spectra in the incommensurate magnetic phases of La2-xSrxCoO4.

Details

show
hide
Language(s): eng - English
 Dates: 2016-04-272016-04-27
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000374858800002
DOI: 10.1038/srep25117
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 6 Sequence Number: 25117 Start / End Page: 1 - 8 Identifier: Other: 2045-2322
CoNE: /journals/resource/2045-2322