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  Bulk electronic structure of Zn-Mg-Y and Zn-Mg-Dy icosahedral quasicrystals

Nayak, J., Maniraj, M., Gloskovskii, A., Krajčí, M., Sebastian, S., Fisher, I. R., et al. (2015). Bulk electronic structure of Zn-Mg-Y and Zn-Mg-Dy icosahedral quasicrystals. Physical Review B, 91(23): 235116. doi:10.1103/PhysRevB.91.235116.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-9DD8-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0003-2B73-C
Genre: Journal Article

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 Creators:
Nayak, J.1, Author
Maniraj, M.1, Author
Gloskovskii, A.2, Author
Krajčí, M.3, Author
Sebastian, S.4, Author
Fisher, I. R.4, Author
Horn, Karsten5, Author           
Barman, S. R.1, Author
Affiliations:
1UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh, India, ou_persistent22              
2Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, D-22607 Hamburg, Germany, ou_persistent22              
3Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84511 Bratislava, Slovak Republic, ou_persistent22              
4Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, California 94305-4045, USA, ou_persistent22              
5Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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 Abstract: We use bulk sensitive hard x-ray photoelectron spectroscopy to provide unambiguous evidence for a pseudogap in the density of states around the Fermi level in icosahedral Zn-Mg-Y and Zn-Mg-Dy quasicrystals, in agreement with our density functional theory calculations. The pseudogap in these Zn-based quasicrystals is less pronounced compared to the Al-based ones such as Al-Pd-Mn and Al-Cu-Fe [J. Nayak et al., Phys. Rev. Lett. 109, 216403 (2012)]. This observation is in agreement with transport studies that indicate a larger charge carrier concentration in the Zn-based quasicrystals. Compared to Zn-Mg-Dy, the pseudogap is somewhat deeper in Zn-Mg-Y. The larger width of the Mg 1s and Zn 2p core-level spectra in Zn-Mg-Y is explained by different configurations of the local atomic surrounding compared to Zn-Mg-Dy.

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Language(s): eng - English
 Dates: 2015-05-192015-03-212015-06-112015-06-15
 Publication Status: Issued
 Pages: 6
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.91.235116
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 91 (23) Sequence Number: 235116 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008