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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 ISSN 2469-9950.

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Official URL: http://dx.doi.org/10.1103/PhysRevB.102.205403

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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
Subjects: Q Science > QC Physics
Q Science > QH Natural history
Divisions: Faculty of Science, Engineering and Medicine > 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:
DateEvent
4 November 2020Published
7 October 2020Accepted
6 October 2020Modified
2 June 2020Submitted
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
Date of first compliant deposit: 21 December 2020
Date of first compliant Open Access: 22 December 2020
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/T005963/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
WE1889/10-1[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659

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