Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing condensed matter physics with magnetometry based on
  nitrogen-vacancy centres in diamond   The magnetic fields generated by spins and currents provide a unique window
into the physics of correlated-electron materials and devices. Proposed only a
decade ago, magnetometry based on the electron spin of nitrogen-vacancy (NV)
defects in diamond is emerging as a platform that is excellently suited for
probing condensed matter systems: it can be operated from cryogenic
temperatures to above room temperature, has a dynamic range spanning from DC to
GHz, and allows sensor-sample distances as small as a few nanometres. As such,
NV magnetometry provides access to static and dynamic magnetic and electronic
phenomena with nanoscale spatial resolution. Pioneering work focused on
proof-of-principle demonstrations of its nanoscale imaging resolution and
magnetic field sensitivity. Now, experiments are starting to probe the
correlated-electron physics of magnets and superconductors and to explore the
current distributions in low-dimensional materials. In this Review, we discuss
the application of NV magnetometry to the exploration of condensed matter
physics, focusing on its use to study static and dynamic magnetic textures, and
static and dynamic current distributions.

30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th