Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Singlet-triplet spin blockade and charge sensing in a few-electron
  double quantum dot   Singlet-triplet spin blockade in a few-electron lateral double quantum dot is
investigated using simultaneous transport and charge-sensing measurements.
Transport from the (1,1) to the (0,2) electron occupancy states is strongly
suppressed relative to the opposite bias [(0,2) to (1,1)]. At large bias, spin
blockade ceases as the (0,2) triplet state enters the transport window, giving
a direct measure of exchange splitting as a function of magnetic field. A
simple model for current and steady-state charge distribution in spin-blockade
conditions is developed and found to be in excellent agreement with experiment.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat