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  Visualization of localized perturbations on a (001) surface of the ferromagnetic semimetal EuB6

Rößler, S., Jiao, L., Seiro, S., Rosa, P. F. S., Fisk, Z., Roessler, U. K., et al. (2020). Visualization of localized perturbations on a (001) surface of the ferromagnetic semimetal EuB6. Physical Review B, 101(23): 235421, pp. 1-9. doi:10.1103/PhysRevB.101.235421.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-9FB1-F Version Permalink: http://hdl.handle.net/21.11116/0000-0006-9FB6-A
Genre: Journal Article

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 Creators:
Rößler, Sahana1, Author              
Jiao, Lin1, Author              
Seiro, Silvia2, Author              
Rosa, Priscila F. S.3, Author
Fisk, Zachary3, Author
Roessler, Ulrich K.3, Author
Wirth, Steffen4, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Silvia Seiro, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863473              
3External Organizations, ou_persistent22              
4Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              

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 Abstract: We performed scanning tunneling microscopy (STM) and spectroscopy on a (001) surface of the ferromagnetic semimetal EuB6. Large-amplitude oscillations emanating from the elastic scattering of electrons by the surface impurities are observed in topography and in differential conductance maps. Fourier transform of the conductance maps embracing these regions indicate a holelike dispersion centered around the (Gamma) over bar point of the two-dimensional Brillouin zone. Using density functional theory slab calculations, we identify a spin-split surface state, which stems from the dangling p(z) orbitals of the apical boron atom. Hybridization with bulk electronic states leads to a resonance enhancement in certain regions around the (Gamma) over bar point, contributing to the remarkably strong real-space response around static (Gamma) over bar point defects, which are observed in STM measurements.

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Language(s): eng - English
 Dates: 2020-06-112020-06-11
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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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: 101 (23) Sequence Number: 235421 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008