Faculty

Geoffrey S.D. Beach

 

Disciplines

Research

Professor Geoffrey Beach worked in UCSD's Center for Magnetic Recording Research to develop novel magnetic thin-film nanocomposites for ultrafast data storage applications. He later went on to the University of Texas at Austin as a Postdoctoral Fellow in the Department of Physics and the Texas Materials Institute where he made important discoveries in magnetization dynamics and spin-transfer torque in nanoscale magnetic structures. His current research interests focus on spin dynamics and “spin-electronics” in nanoscale magnetic materials and devices. Developing ways to store information more densely and to access it more quickly requires understanding the magnetization configurations in nanoscale structures and how they evolve in time. His work aims in part to understand and control spin excitations in magnetic materials whose dimensions approach fundamental magnetic length scales. One of the most exciting prospects in magnetism today is the possibility of electrical control of the magnetic state of a device, taking advantage of the coupling between spin and charge in a conducting ferromagnetic material. A major thrust of his research aims to harness the spin of the electron in magnetic materials to realize new approaches to spin-based storage and computation. Studying these processes requires the development of advanced instrumentation capable of probing magnetization dynamics at the shortest timescales and the smallest length scales. His group will work to develop new optical and electrical approaches to push the detection limits in order to enable development of new materials and structures to meet the information storage and processing demands of the future.

Selected Publications

G.S.D. Beach, M. Tsoi, and J.L. Erskine, “Current-induced domain wall motion (Invited),” in "Current Perspectives on Spin Transfer Torque," J. Magn. Magn. Mater. 320, 1272 (2008).

G.S.D. Beach, C. Knutson, M. Tsoi, and J.L. Erskine, “Field and current-driven domain wall dynamics: An experimental picture,” J. Magn. Magn. Mater. 310, 2038 (2007).

G.S.D. Beach, C. Knutson, C. Nistor, M. Tsoi, and J.L. Erskine, “Nonlinear domain-wall-velocity enhancement by spin-polarized electric current,” Phys. Rev. Lett. 97, 057203 (2006).

G.S.D. Beach, C. Nistor, C. Knutson, M. Tsoi, and J.L. Erskine, “Dynamics of field-driven domain-wall propagation in ferromagnetic nanowires,” Nature Mater. 4, 741 (2005).

G.S.D. Beach and A.E. Berkowitz, “Co-Fe metal/native-oxide multilayers: A new direction in soft magnetic thin film design (Invited - Advances in Magnetics),” IEEE Trans. Magn. 41, 2043 (2005).

G.S.D. Beach, A.E. Berkowitz, F.T. Parker, D.J. Smith, P.A. Crozier, and A.E. Berkowitz, “New magnetic order in buried native iron oxide layers”, Phys Rev. Lett. 91, 267201 (2003).

Related News

New discoveries in magnetic thin films
A magnetic phenomenon newly discovered by MIT researchers could lead to much faster, denser, and more energy-efficient chips for memory and computation.
June 19, 2013
An electrical switch for magnetism
Researchers at MIT have developed a new way of controlling the motion of magnetic domains — the key technology in magnetic memory systems, such as a computer’s hard disk.
May 29, 2013
Faculty Promotions announced
  Profs. Alfredo Alexander-Katz and Geoff Beach will both be promoted to the rank of Associate Professor as of July 1, 2013.
February 21, 2013
Joint MMM/Intermag Conference Best Student Presentation Award
Uwe Bauer and Liz Rapoport were among 5 finalists for the Best Student Presentation Award at the 12th Joint MMM/Intermag Conference in Chicago last month.  The grand prize went to Uwe Ba
February 7, 2013
Oscillating magnetic particles
Oscillating microscopic beads could be key to biolab on a chip. Professor Geoff Beach and his team finds way to manipulate and measure magnetic particles without contact, potentially enabling multi
September 26, 2012