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Orbital characters and near two-dimensionality of Fermi surfaces in
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10.1063/1.4767374
/content/aip/journal/apl/101/20/10.1063/1.4767374
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/20/10.1063/1.4767374

Figures

Image of FIG. 1.
FIG. 1.

ARPES data along direction with photon energy 21.2 eV, He-discharge lamp, T = 20 K. (a) Integrated intensity map as FS of NaFeAs, integrated within with respect to . is obscured by the inner of the two circles drawn around . (b) Intensity plots of band dispersion along direction, indicated as cut in (a). (c) The energy distribution curves (EDCs) plot for the data in panel (b). (d) BZ of NaFeAs and high symmetry points. (e) Experimental geometry setup for polarization dependent measurement. The electric field of p polarized light is primarily along the x direction, and the s polarized light along y direction, and contains a z-component.

Image of FIG. 2.
FIG. 2.

The ARPES data around along direction with the linearly polarized light and photon energy at T = 20 K. (a) Intensity plot taken at point in p geometry. (b) Second derivative [ ] intensity plot of data in panel (a) to illustrate the band dispersion. (c) EDCs of the data in panel (a). The markers are band dispersions plotted as guide to the eye. (d)-(f) The same as panels (a), (b), and (c), respectively, but taken in s geometry. The electric fields are indicated by arrows in (a) and (d).

Image of FIG. 3.
FIG. 3.

The ARPES data around M along direction with the linearly polarized light and photon energy at T = 20 K. (a) Intensity plot taken at M point in p geometry. (b) Second derivative [ ] intensity plot of data in panel (a) to illustrate band dispersion. (c) EDCs for the data in panel (a). The markers are band dispersions plotted as guide to the eye. (d)-(f) The same as panels (a), (b), and (c), respectively, but taken in s geometry. The electric fields are indicated by arrows in (a) and (d).

Image of FIG. 4.
FIG. 4.

The photon energy dependent ARPES data taken at 20 K. (a) Integrated intensity plot as FS of in the plane, using the s polarized light. The line served as guide to the eye of FS of and . (b) Intensity plot taken along direction, corresponding (a). The line served as guide to the eye of band and . (c) EDCs for the data in panel (b). (d) EDCs of NaFeAs in more detailed measurements from 34 to 48 eV, using the RC.

Tables

Generic image for table
Table I.

The summary of orbital components of each bands close to and its parity. “+/−” represents the band intensity enhanced/suppressed in the corresponding geometry.

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/content/aip/journal/apl/101/20/10.1063/1.4767374
2012-11-13
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Orbital characters and near two-dimensionality of Fermi surfaces in NaFe1−xCoxAs
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/20/10.1063/1.4767374
10.1063/1.4767374
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