Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fermi surface tomography   Fermi surfaces, three-dimensional (3D) abstract interfaces that define the
occupied energies of electrons in a solid, are important for characterizing and
predicting the thermal, electrical, magnetic, and optical properties of
crystalline metals and semiconductors [1]. Angle-resolved photoemission
spectroscopy (ARPES) is the only technique directly probing the Fermi surface
by measuring the Fermi momenta (kF) from energy and angular distribution of
photoelectrons dislodged by monochromatic light [2]. Existing electron
analyzers are able to determine a number of kF-vectors simultaneously, but
current technical limitations prohibit a direct high-resolution 3D Fermi
surface mapping. As a result, no such datasets exist, strongly limiting our
knowledge about the Fermi surfaces and restricting a detailed comparison with
the widely available nowadays calculated 3D Fermi surfaces. Here we show that
using a simpler instrumentation, based on the Fourier electron optics combined
with a retardation field of the detector, it is possible to perform 3D-mapping
within a very short time interval and with very high resolution. We present the
first detailed experimental 3D Fermi surface recorded in the full Brillouin
zone along the kz-direction as well as other experimental results featuring
multiple advantages of our technique. In combination with various light
sources, including synchrotron radiation, our methodology and instrumentation
offer new opportunities for high-resolution ARPES in the physical and life
sciences.

9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs