Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controlling magnetoresistance by tuning semimetallicity through
  dimensional confinement and heteroepitaxy   Controlling the electronic properties via bandstructure engineering is at the
heart of modern semiconductor devices. Here, we extend this concept to
semimetals where, utilizing LuSb as a model system, we show that quantum
confinement lifts carrier compensation and differentially affects the mobility
of the electron and hole-like carriers resulting in a strong modification in
its large, non-saturating magnetoresistance behavior. Bonding mismatch at the
heteroepitaxial interface of a semimetal (LuSb) and a semiconductor (GaSb)
leads to the emergence of a novel, two-dimensional, interfacial hole gas and is
accompanied by a charge transfer across the interface that provides another
avenue to modify the electronic structure and magnetotransport properties in
the ultra-thin limit. Our work lays out a general strategy of utilizing
confined thin film geometries and heteroepitaxial interfaces to engineer
electronic structure in semimetallic systems, which allows control over their
magnetoresistance behavior and simultaneously, provides insights into its
origin.

22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph