Fayerweather Professor
PhD, University of Chicago, 1962
Fellow, American Physical Society
Fellow, American Association for the Advancement of Science
John Ketterson's research interests cover many areas of condensed-matter physics, including liquid 3He and 4He; artificial superlattices; heavy-fermion, conventional, and high-Tc superconductors; Langmuir-Blodgett and other organic films; scanning-electron, near-field optical, tunneling, and atomic-force microscopy; novel thermoelectric materials; nanostructured magnetic, optical, metallic, and semiconducting materials; nonlinear optical and excitonic materials; and Josephson-junction devices.
His current research programs include studying collective-mode phenomena in 3He; microwave absorption measurements in Zn, UPt3and UBe13 up to 40 GHz (to search for collective modes); developing a cryogenic scanning-tunneling microscope (STM) and constructing a new STM probe based on his temperature-compensated wide-amplitude design; developing the SPOM (surface plasmon optical microscope) to study biological membranes; and performing atomic-force microscope studies (with R. C. MacDonald of Northwestern's biochemistry, molecular biology, and cell biology department) on the red-blood-cell cytoskeleton. Ketterson is also researching the development of AlN, KTP, and SiC film deposition and wave-guide patterning to make a Mach-Zhender optical switch; continuing development of multilayer superconducting X-ray detectors and other devices; working to clarify the interaction observed between multilayer junctions and microwaves; fabricating dot-matrix arrays of superconducting, ferromagnetic, and normal metals with electron-beam lithography; and developing surface-plasmon-based optical biosensors.
Magnetic and Physical Properties Measurement Facility
Selected Publications
- K. Rivkin and J. B. Ketterson
Magnetization Reversal In The Anisotropy-Dominated Regime Using Time-Dependent Magnetic Fields
Applied Physics Letters 89, 252507 (2006) - J. I. Jang, Y. Sun, B. Watkins, et al.
Bound Excitons in Cu2O: Efficient Internal Free Exciton Detector
Physical Review B74, 235204 (2006) - S. E. Shafranjuk and J. B. Ketterson
Josephson Plasmon Versus Amplitude Modes In A Superconducting Tunnel Junction
Physical Review B74, 172501 (2006) - J. J. Lee, M. Y. Kim, Y. Cui, et al.
Room Temperature Ferromagnetism Of Ge/MnAs Digital Alloys
Journal Of Superconductivity 18, 75 (2005) - Z. G. Yin, H. T. Zhang, D. M. Goodner, et al.
Two-Dimensional Growth of Continuous Cu2O Thin Films By Magnetron Sputtering
Applied Physics Letters 86, 061901 (2005)
