@article { ISI:000372413700001,
	title = {Bounds on nanoscale nematicity in single-layer FeSe/SrTiO3},
	journal = {PHYSICAL REVIEW B},
	volume = {93},
	number = {12},
	year = {2016},
	month = {MAR 18},
	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 3d(xz) and 3d(yz) 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 delta r(2) = 20 nm x 20 nm, xz/yz Fermi wave vector difference larger than delta k = 0.014 pi, and energy splitting larger than delta E = 3.5 meV. The lack of detectable ordering pinned around defects places qualitative constraints on models of fluctuating nematicity.},
	issn = {2469-9950},
	doi = {10.1103/PhysRevB.93.125129},
	author = {Huang, Dennis and Webb, Tatiana A. and Fang, Shiang and Song, Can-Li and Chang, Cui-Zu and Moodera, Jagadeesh S. and Efthimios Kaxiras and Hoffman, Jennifer E.}
}
