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Surface analysis of the PrB6 (001) cleavage plane by scanning tunneling microscopy and spectroscopy
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Buchsteiner, P., Harmsen, L., Ciomaga Hatnean, Monica, Balakrishnan, Geetha and Wenderoth, M. (2020) Surface analysis of the PrB6 (001) cleavage plane by scanning tunneling microscopy and spectroscopy. Physical Review B, 102 (20). 205403. doi:10.1103/PhysRevB.102.205403
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Official URL: http://dx.doi.org/10.1103/PhysRevB.102.205403
Abstract
Scanning tunneling microscopy and spectroscopy were performed on the (001) cleavage plane of praseodymium hexaboride (PrB6). We found three different ordered morphologies, namely, a chainlike (2 × 1) reconstruction and two uniform terminations. The chainlike (2 × 1) reconstruction is rationalized as parallel Pr rows on top of a complete B6 network. The two uniform terminations are identified as complete Pr or B6 layers. Although the uniform terminations could be expected to be simply (1 × 1) reconstructed, one of them shows a rather stripelike atomic corrugation for close tip-sample distances. All morphologies share two spectral features at −0.2 and +0.2 eV around EF. In addition, one uniform termination shows an additional peak in the differential conductance at −0.7 eV. Similarly, the chainlike (2 × 1) reconstruction reveals a feature in the differential conductance at −1.1 eV when moving the tip closer to the surface. The distance dependency points towards rather localized electronic states, which we tentatively attribute to a 4 f -related feature.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics Q Science > QH Natural history |
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| Divisions: | Faculty of Science > Physics | ||||||||||
| Library of Congress Subject Headings (LCSH): | Scanning tunneling microscopy , Tunneling spectroscopy, Atomic force microscopy | ||||||||||
| Journal or Publication Title: | Physical Review B | ||||||||||
| Publisher: | American Physical Society | ||||||||||
| ISSN: | 2469-9950 | ||||||||||
| Official Date: | 4 November 2020 | ||||||||||
| Dates: |
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| Volume: | 102 | ||||||||||
| Number: | 20 | ||||||||||
| Article Number: | 205403 | ||||||||||
| DOI: | 10.1103/PhysRevB.102.205403 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Copyright Holders: | American Physical Society | ||||||||||
| RIOXX Funder/Project Grant: |
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