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|Title:||ALS-CXRO Seminar Series | Sayeef Salahuddin|
|When:||05/22/2013 3:00 PM - 4:00 PM|
|Description:||ALS/CXRO Seminar Series|
Wed, May 22, 2013
15-253 Conf Rm
Nanomagnetic Logic without a Magnetic Field
An alternate state variable such as spin could enable completely new functionalities that go beyond the capabilities of traditional computing schemes. In that regard, significant work has been performed on nanomagnetic logic, a computing scheme where information can be processed using dipole coupled nanomagnets. Demonstration of multi-bit computing gates has established the feasibility of constructing functional logic blocks based on this scheme. However, all practical implementations of nanomagnetic logic to date have been severely limited by the necessity to apply a magnetic field for clocking. While the energy associated with magnetic switching itself could be very small, the energy necessary to generate the magnetic field is orders of magnitude higher and renders the overall logic scheme uncompetitive to CMOS counterparts. In this talk, I shall describe recent effort by our group where we have exploited spin-orbit coupling enabled spin torque transfer to demonstrate a nanomagnetic logic scheme at room temperature where the necessity for using a magnetic field clock can be completely removed. Thus a computing scheme, based on spin, has been devised where read, write and logic computation can be done without using any magnetic field.