Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Control of spin relaxation in semiconductor double quantum dots   We propose a scheme to manipulate the spin relaxation in vertically coupled
semiconductor double quantum dots. Up to {\em twelve} orders of magnitude
variation of the spin relaxation time can be achieved by a small gate voltage
applied vertically on the double dot. Different effects such as the dot size,
barrier height, inter-dot distance, and magnetic field on the spin relaxation
are investigated in detail. The condition to achieve a large variation is
discussed.

34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph