Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: STM measurement of single spin relaxation time in superconductors   Localized spin states in conventional superconductors at low temperatures are
expected to have long decoherence time due to the strong suppression of spin
relaxation channels. We propose a scanning tunneling microscopy (STM)
experiment allowing the direct measurement of the decoherence time of a single
spin in a conventional superconductor. The experimental setup can be readily
applied to general-purpose spin-polarized STM and to local spin relaxation
spectroscopy. A possible extension of the setup to a quantum information
processing scheme is discussed.

3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex