R. Ramesh

Research Expertise and Interest

processing of complex oxide heterostructures, spin-charge coupling, nanoscale characterization/device structures, thin film growth and materials physics of complex oxides, materials processing for devices, information technologies

Research Description

Professor Ramesh graduated from the University of California, Berkeley in 1987.  He returned to Berkeley in 2004 and is currently the Purnendu Chatterjee Chair Professor in Materials Science and Physics. From 1989-1995, at Bellcore, he initiated research in several key areas of oxide electronics, including ferroelectric nonvolatile memories.  His landmark contributions in ferroelectrics came through the recognition that conducting oxide electrodes are the solution to the problem of polarization fatigue, which for 30 years, remained an enigma and unsolved problem. In 1994, in collaboration with S. Jin (Lucent Technologies), he initiated research into manganite thin films and they coined the term, Colossal Magnetoresistive (CMR) Oxides. He initiated pioneering research into multiferroic oxides at Maryland. At Berkeley, he continues to pursue key scientific and technological problems in complex multifunctional oxide thin films, nanostructures and heterostructures. His group demonstrated the existence of a large ferroelectric polarization in multiferroic BiFeO3 films, in agreement with first principle predictions; they also demonstrated electric field control of antiferromagnetism as well as ferromagnetism, a critical step towards the next generation of ultralow power storage and spintronics devices that are completely electric field controlled. He has published extensively on the synthesis and materials physics of complex oxide materials and his work is highly cited (over 65,000 citations, H-factor =110).  He is a fellow of APS, AAAS & MRS. He has been recognized with a Humboldt Senior Scientist Prize, The American Physical Society’s David Adler Lectureship and the James McGroddy Prize, the TMS Bardeen Prize and the IUPAP Magnetism Prize and Neel Medal. In 2014, he was recognized as a Thomson-Reuters Citation Laureate in Physics for his work on multiferroics. In 2011, he was elected to the National Academy of Engineering.From December 2010 to August 2012 he served as the Founding Director of the SunShot Initiative at the U.S. Department of Energy, overseeing and coordinating the R&D activities and funding (300M$/year) of the U.S. Solar Program. From July 2013 to August 2014, he was the deputy lab director at Oak Ridge National Laboratory and from August 2014 to August 2018 he served as the associate laboratory director for Energy Technologies at LBNL.

In the News

National Academy, Royal Society elect new UC Berkeley members

Chemist Dean Toste, biochemist James Hurley and astrophysicist Eliot Quataert are the latest University of California, Berkeley, faculty members elected to the prestigious National Academy of Sciences (NAS), a group that has provided policy guidance to the U.S. government since 1863.

Berkeley Lab Researchers Make First Perovskite-based Superlens for the Infrared

Berkeley Lab researchers have fabricated superlenses from perovskite oxides that are ideal for capturing light in the mid-infrared range, opening the door to highly sensitive biomedical detection and imaging. It may also be possible to turn the superlensing effect on/off, opening the door to highly dense data writing and storage.

Featured in the Media

Please note: The views and opinions expressed in these articles are those of the authors and do not necessarily reflect the official policy or positions of UC Berkeley.
December 5, 2018
Paul Lilly

A revolutionary magneto-electric spin-orbit (MESO) logic device invented by Intel is an exciting development in the application of multiferroic, a material created at Berkeley in 2001 by materials science and engineering professor Ramamoorthy Ramesh. In a new study led by Professor Ramesh, and co-authored with researchers from Intel and the Lawrence Berkeley National Laboratory, the scientists describe the new MESO device, which could replace current semiconductor technology. "The discovery was that there are materials where you can apply a voltage and change the magnetic order of the multiferroic," Professor Ramesh says. "But to me, 'What would we do with these multiferroics?' was always a big question. MESO bridges that gap and provides one pathway for computing to evolve." For more on this, see our press release at Berkeley News. Other stories on this topic appeared in dozens of sources around the world, including ExecutiveBiz, News Live TV, Kopitiam Bot, Dark Vision Hardware (Belgium), The Guru of 3D (Netherlands), EQ International (India), TechSpot, and TechSite.

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