Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microscopic study of the Fulde-Ferrell-Larkin-Ovchinnikov state in an
  all-organic superconductor   Quasi-two dimensional superconductors with sufficiently weak interlayer
coupling allow magnetic flux to penetrate in the form of Josephson vortices for
in-plane applied magnetic fields. A consequence is the dominance of the Zeeman
interaction over orbital effects. In the clean limit, the normal state is
favored over superconductivity for fields greater than the paramagnetic
limiting field, unless an intermediate, inhomogeneous state is stabilized.
Presented here are nuclear magnetic resonance (NMR) studies of the
inhomogeneous (FFLO) state for $\beta^{\prime
\prime}$-(ET)$_2$SF$_5$CH$_2$CF$_2$SO$_3$. The uniform superconductivity-FFLO
transition is identified at an applied field value of 9.3(0.1) T at low
temperature ($T=130$ mK), and evidence for a possible second transition between
inhomogeneous states at $\sim11$ T is presented. The spin polarization
distribution inferred from the NMR absorption spectrum compares favorably to a
single-Q modulation of the superconducting order parameter.

7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
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
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex