Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Broken mirror symmetry tuned topological transport in PbTe/SnTe
  heterostructures   The tunability of topological surface states and controllable opening of the
Dirac gap are of great importance to the application of topological materials.
In topological crystalline insulators (TCIs), crystal symmetry and topology of
electronic bands intertwine to create topological surface states and thus the
Dirac gap can be modulated by symmetry breaking structural changes of lattice.
By transport measurement on heterostructures composed of p-type topological
crystalline insulator SnTe and n-type conventional semiconductor PbTe, here we
show a giant linear magnetoresistance (up to 2150% under 14 T at 2 K) induced
by the Dirac Fermions at the PbTe/SnTe interface. In contrast, PbTe/SnTe
samples grown at elevated temperature exhibit a cubic-to-rhombohedral
structural phase transition of SnTe lattice below 100 K and weak
antilocalization effect. Such distinctive magneto-resistance behavior is
attributed to the broken mirror symmetry and gapping of topological surface
states. Our work provides a promising application for future
magneto-electronics and spintronics based on TCI heterostructures.

12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc