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Professor Anlage, Ph.D., California Institute of Technology, 1988, is an experimentalist interested in the basic physics and applications of superconductivity, the use of near-field microwave microscopes to investigate the nano-scale fundamental physics of correlated electron systems, and experimental quantum chaos.
Prof. Anlage has investigated the mechanism of high-temperature superconductivity in the copper-oxide materials through measurements of microwave surface impedance and fluctuation conductivity. His main interests are in elucidating the electron pairing mechanism, measuring the intrinsic nonlinear response in the Meissner state, and understanding the nature of the superconductor/normal phase transition in high-Tc materials. All of this comes from measurements of the electrodynamic response of superconductors by various means, including resonant and non-resonant rf, microwave, and millimeter-wave techniques.
Prof. Anlage's group has invented a scanning near-field microwave microscope and used it to perform quantitative imaging of basic physical properties on remarkably short length scales. The microscope has been used to quantitatively image surface sheet resistance, dielectric constant, ferroelectric polarization, magnetic permeability, topography, and microwave electric fields. One version of the microscope employs scanning tunneling microscopy to maintain a ~ 1 nm probe-sample distance, and has achieved a lateral resolution of 2.5 nm in capacitance imaging. Work is in progress to image dielectric properties over more than 1 decade in frequency, image nano-scale phase segregation in manganite oxide materials, and to image local sources of nonlinearity in superconductors.
Experimental work in quantum chaos is centered on analogs of the Schrödinger equation using two dimensional microwave resonators. They have measured the universal spectral and wave function statistics in quantum chaotic systems with and without time-reversal symmetry, and are currently focused on scattering matrix statistics and weak-localization. This work is of direct relevance for nano-electronics and quantum computing.
The experimental work is done with a UHV sputter/e-beam deposition system, superconducting resonant cavities of various designs, four scanning microwave microscopes (two of which are cryogenic), and many novel experimental instruments built by students and post-docs in the group. As part of the Maryland Center for Superconductivity Research , the Maryland Materials Research Science and Engineering Center, and the Maryland Multidisciplinary University Research Initiative on Chaos, Anlage's group benefits from extensive collaborative research on all aspects of cutting-edge condensed matter physics and chaos.
Center for Superconductivity Research, University of Maryland, College Park, MD 20742-4111
Phone: 301.405.6129 Fax: 301.405.3779
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