Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tuning the tunnel coupling of quantum dot molecules with longitudinal
  magnetic fields   We show that the energy splitting between the bonding and antibonding
molecular states of holes in vertically stacked quantum dots can be tuned using
longitudinal magnetic fields. With increasing field, the energy splitting first
decreases down to zero and then to negative values, which implies a
bonding-to-antibonding ground state transition. This effect is a consequence of
the enhancement of the valence band spin-orbit interaction induced by the
magnetic field, and it provides a flexible mechanism to switch the molecular
ground state from bonding to antibonding.

21
The categories of this paper are: adap-org
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg