Logic Circuits with Spin Wave Bus Our group is working on a new kind of logic devices utilizing spin waves for information transmission and processing. The information among the distant devices is transmitted in a wireless manner via a magnetic field produced by spin waves propagating in the ferromagnetic film, referred to as the Spin Wave Bus. As an alternative approach to the transistor-based architecture, logic circuits with Spin Wave Bus do not use charge as an information carrier. A bit of information can be encoded into the phase or the amplitude of the spin wave signal. Potentially, logic circuits with spin wave bus may resolve the interconnect problem and provide “wireless” read-in and read-out. Another expected benefit is in the enhanced logic functionality. A set of “NOT”, “AND”, and “OR” logic gates can be realized in one device structure. The coupling between the circuits and the spin wave bus can be controlled. The group has recently accomplished a set of experiments demonstrating the inductive coupling through the 100nm thick NiFe and CoFe films at room temperature. In the figures below, there are the test device layout, the test vehicle, and the experimental data on spin wave transport. The group plans to demonstrate a first prototype spin wave-based logic device operating at room temperature. Typical papers 1. Alexander Khitun, Dmitri E. Nikonov, Mingqiang Bao, Kosmas Galatsis, and Kang L. Wang   "Feasibility Study of Logic Circuits with Spin Wave Bus"   Download   2. Alexander Khitun., Kang L. Wang   "Nano scale computational architectures with Spin Wave Bus"   Superlattices and Microstructures, 38 (2005) 184¨C200 July 2005   Download   3. Mary M. Eshaghian-Wilner, Alex Khitun, Shiva Navab, and Kang Wang   "A Nano-Scale Reconfigurable Mesh with Spin Waves"   Download   4. Kang L. Wang, Alexander Khitun and Amar H. Flood   "Interconnects for Nanoelectronics"   IEEE, 2005 P231-233   Download