Information transfer by spin chirality

Information transfer by vector spin chirality in finite magnetic chains.
Matthias Menzel, Yuriy Mokrousov, Robert Wieser, Jessica E. Bickel, Elena Vedmedenko, Stefan Blügel, Stefan Heinze, Kirsten von Bergmann, André Kubetzka, and Roland Wiesendanger
ArXiv 1204.2650 (2012)

SP-STM measurements of Fe chains on Ir(001). (a) and (b) Typical sample area of 30 x 30 nm2 measured with an Fe-coated
W tip without and with an applied external magnetic field of B = +2 T perpendicular to the sample surface, respectively (constant current images colorized with simultaneously acquired dI/dU maps, measurement parameters: U = +500mV, I = 5 nA, T = 8 K).(c) Topographic line profiles of the same Fe chain at B = 0 T and B = 2 T measured with a Cr-coated tip. The insets show schematically the tip magnetization and how a 120 deg spin-spiral, which is inverting in opposite fields, could explain the experimental results.