Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stabilization of phase noise in spin torque nano oscillators by a phase
  locked loop   The main limitation in order to exploit spin torque nano-oscillators (STNOs)
in various potential applications is their large phase noise. In this work, we
demonstrate its efficient reduction by a highly reconfigurable, compact,
specifically on-chip designed PLL based on custom integrated circuits. First,
we thoroughly study the parameter space of the PLL+STNO system experimentally.
Second, we present a theory which describes the locking of a STNO to an
external signal in a general sense. In our developed theory, we do not restrict
ourselves to the case of a perfect phase locking but also consider phase slips
and the corresponding low offset frequency $1/f^2$ noise, so far the main
drawback in such systems. Combining experiment and theory allows us to reveal
complex parameter dependences of the system's phase noise. The results provide
an important step for the optimization of noise properties and thus leverage
the exploitation of STNOs in prospective real applications.

36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org