Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time-dependent spin and transport properties of a single-molecule magnet
  in a tunnel junction   In single-molecule magnets, the exchange between a localized spin moment and
the electronic background provides a suitable laboratory for studies of
dynamical aspects of both local spin and transport properties. Here we address
the time evolution of a localized spin moment coupled to an electronic level in
a molecular quantum dot embedded in a tunnel junction between metallic leads.
The interactions between the localized spin moment and the electronic level
generate an effective interaction between the spin moment at different
instances in time. Therefore, we show that, despite being a single-spin system,
there are effective contributions of isotropic Heisenberg, and anisotropic
Ising and Dzyaloshinski-Moriya character acting on the spin moment. The
interactions can be controlled by gate voltage, voltage bias, the spin
polarization in the leads, in addition to external magnetic fields. Signatures
of the spin dynamics are found in the transport properties of the tunneling
system, and we demonstrate that measurements of the spin current may be used
for read-out of the local spin moment orientation.

29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
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