Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3

Dennis Huang, Tatiana A. Webb, Shiang Fang, Can Li Song, Cui Zu Chang, Jagadeesh S. Moodera, Efthimios Kaxiras, Jennifer E. Hoffman

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We use scanning tunneling microscopy (STM) and quasiparticle interference (QPI) imaging to investigate the low-energy orbital texture of single-layer FeSe/SrTiO3. We develop a T-matrix model of multiorbital QPI to disentangle scattering intensities from Fe 3dxz and 3dyz bands, enabling the use of STM as a nanoscale detection tool of nematicity. By sampling multiple spatial regions of a single-layer FeSe/SrTiO3 film, we quantitatively exclude static xz/yz orbital ordering with domain size larger than δr2=20nm×20nm, xz/yz Fermi wave vector difference larger than δk=0.014π, and energy splitting larger than δE=3.5meV. The lack of detectable ordering pinned around defects places qualitative constraints on models of fluctuating nematicity.

Original languageEnglish (US)
Article number125129
JournalPhysical Review B
Volume93
Issue number12
DOIs
StatePublished - Mar 18 2016

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Scanning tunneling microscopy
scanning tunneling microscopy
interference
orbitals
textures
Textures
sampling
Scattering
Sampling
Imaging techniques
Defects
energy
defects
matrices
scattering
strontium titanium oxide

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Huang, D., Webb, T. A., Fang, S., Song, C. L., Chang, C. Z., Moodera, J. S., ... Hoffman, J. E. (2016). Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3. Physical Review B, 93(12), [125129]. https://doi.org/10.1103/PhysRevB.93.125129
Huang, Dennis ; Webb, Tatiana A. ; Fang, Shiang ; Song, Can Li ; Chang, Cui Zu ; Moodera, Jagadeesh S. ; Kaxiras, Efthimios ; Hoffman, Jennifer E. / Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3. In: Physical Review B. 2016 ; Vol. 93, No. 12.
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Huang, D, Webb, TA, Fang, S, Song, CL, Chang, CZ, Moodera, JS, Kaxiras, E & Hoffman, JE 2016, 'Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3', Physical Review B, vol. 93, no. 12, 125129. https://doi.org/10.1103/PhysRevB.93.125129

Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3. / Huang, Dennis; Webb, Tatiana A.; Fang, Shiang; Song, Can Li; Chang, Cui Zu; Moodera, Jagadeesh S.; Kaxiras, Efthimios; Hoffman, Jennifer E.

In: Physical Review B, Vol. 93, No. 12, 125129, 18.03.2016.

Research output: Contribution to journalArticle

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Huang D, Webb TA, Fang S, Song CL, Chang CZ, Moodera JS et al. Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3. Physical Review B. 2016 Mar 18;93(12). 125129. https://doi.org/10.1103/PhysRevB.93.125129