Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bi-2212/1T-TaS$_2$ Van der Waals junctions: Interplay of proximity
  induced high-$T_c$ superconductivity and CDW order   Understanding the coexistence, competition and/or cooperation between
superconductivity and charge density waves (CDWs) in the transition metal
dichalcogenides (TMDs) is an elusive goal which, when realized, promises to
reveal fundamental information on this important class of materials. Here, we
use four-terminal current-voltage measurements to study the Van der Waals
interface between freshly exfoliated flakes of the high-$T_{c}$ superconductor,
Bi-2212, and the CDW-dominated TMD layered material, 1T-TaS$_{2}$. For highly
transparent barriers, there is a pronounced Andreev reflection feature
providing evidence for proximity-induced high-$T_{c}$ superconductivity in
1T-TaS$_{2}$ with a surprisingly large energy gap ($\sim 20\thinspace $meV)
equal to half that of intrinsic Bi-2212 ($\sim 40\thinspace $meV). Our
systematic study using conductance spectroscopy of junctions with different
transparencies also reveals the presence of two separate boson modes, each
associated with a "dip-hump" structure. We infer that the proximity-induced
high-$T_c$ superconductivity in the 1T-TaS$_2$ is driven by coupling to the
metastable metallic phase coexisting within the Mott commensurate CDW (CCDW)
phase and associated with a concomitant change of the CCDW order parameter in
the interfacial region.

22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci