Dr. Christopn Boehme
Department of Physics and
While the term “Spintronics" was
introduced as label for technologies that represent
information through spin
states rather than charge states, it is nowadays oftentimes
used solely in the
context of spin-polarization, spin-injection, and
spin-transport effects for
which spin-orbit interaction plays an important role. Silicon
and carbon based
semiconductors display only weak spin-orbit coupling and - in
the case of
organic semiconductors - charge transport via hopping through
localized states. These materials appear at first glance
therefore to be
entirely unsuitable for spintronics. However, they also
exhibit spin related
effects not seen in materials with strong spin-orbit coupling
which can be used
for alternative, different approaches to spintronics based on
symmetry states of charge carrier pairs rather than
Reading spin-permutation symmetry is straight forward when
spin-selection rules exist1,2. In contrast to
symmetry does not depend directly on temperature and magnetic
Furthermore, the absence of spin-orbit coupling can also allow
spin-coherence times and thus, the possibility to connect
spintronics to an all
spin based memory which may be applicable to spin-based
concepts and for similar reasons, it allows for magnetic
spin-manipulation schemes. Crucial for the successful
implementation of organic
spintronics will be a fundamental understanding of the
processes which are aimed to be utilized for this new
technology, a requirement
which has only partially achieved. Developing this
understanding will be among
the most important challenges of this field5. In
this talk, our work
on the development of this organic spintronics will be
presented and the issues
at hand as well as the progress made will be discussed.
D. R. McCamey, H. A. Seipel, S. Y. Paik,
M. J. Walter, N. J.
Borys, J. M. Lupton, and C. Boehme, Nature
Materials,7, 723 (2008).
D. R. McCamey, K. J. van Schooten, W. J.
Baker, S.-Y. Lee,
S.-Y. Paik, J. M. Lupton, and C. Boehme, Phys.
Rev. Lett.104, 017601 (2010).
 W. J. Baker, K. Ambal,
D. P. Waters, R.
Baarda, H. Morishita, K. van Schooten, D. R. McCamey, J. M.
Lupton, and C.
Boehme, Nature Commun.3, 898
 W. J. Baker, T. L.
Keevers, J. M. Lupton.
D. R. McCamey, and C. Boehme, Phys. Rev. Lett.108,
C. Boehme and J. M. Lupton, Nature Nano.8, 612 (2013).