  We propose intrinsic magnetism in nanosheets of SnO$_{2}$, based on
first-principles calculations. The electronic structure and spin density reveal
that $p$ orbitals of the oxygen atoms, surrounding Sn vacancies, have a non
itinerant nature which gives birth to localized magnetism. A giant decrease in
defect formation energies of Sn vacancies in nanosheets is observed. We,
therefore, believe that native defects can be stabilized without any chemical
doping. Nanosheets of different thicknesses are also studied, and it is found
that it is easier to create vacancies, which are magnetic, at the surface of
the sheets. SnO$_{2}$ nanosheets can, therefore, open new opportunities in the
field of spintronics.
