welcome to the webpage of
Janice Wynn Guikema
Top Education & Appointments Publications Links Contact Information


Janice is a postdoc in the experimental condensed matter physics group at Johns Hopkins University. Her research interests include superconductivity, nanoscale physics, and scanning probe microscopy. Janice came to Johns Hopkins from Texas A&M University where she taught physics for two years. Previously, she was a postdoc at Cornell in Dan Ralph's group where she fabricated and studied single molecule transistors, in particular their interaction with light. Janice did her graduate work at Stanford University with Kathryn Moler. There she implemented a scanning magnetic microscope (Hall probe and SQUID) with which she studied vortices in high-temperature superconductors.


EDUCATION & APPOINTMENTS
2008-present Postdoctoral Fellow, Department of Physics & Astronomy
Johns Hopkins University, Baltimore, MD
 
2006-2007 Lecturer, Department of Physics
Texas A&M University, College Station, TX
 
2004-2005 Postdoctoral Associate, Laboratory of Atomic and Solid State Physics
Cornell University, Ithaca, NY
 
2004 Ph.D. in Physics
Stanford University, Stanford, CA
 
1998 B.A. in Physics (summa cum laude)
Cornell University, Ithaca, NY


PUBLICATIONS

J.W. Guikema, H. Bluhm, D.A. Bonn, R. Liang, W.N. Hardy, and K.A. Moler. "Two-dimensional vortex behavior in highly underdoped YBa2Cu3O6+x observed by scanning Hall probe microscopy." Physical Review B 77, 104515/1-10 (2008).

H. Bluhm, S.E. Sebastian, J.W. Guikema, I.R. Fisher and K.A. Moler. "Scanning Hall probe imaging of ErNi2B2C." Physical Review B 73, 014514/1-6 (2006).

B.W. Gardner, J.C. Wynn, D.A. Bonn, R. Liang, W.N. Hardy and K.A. Moler. "Vortex-antivortex annihilation in underdoped YBa2Cu3O6.354." Physica C 388-389, 725-726 (2003).

R. Liang, D.A. Bonn, W.N. Hardy, J.C. Wynn, K.A. Moler, L. Lu, S. Larochelle, L. Zhou, M. Greven, L.Lurio and S.G.J. Mochrie. "Preparation and characterization of homogeneous YBCO single crystals with doping level near the SC-AFM boundary." Physica C 383, 1-7 (2002).

B.W. Gardner, J.C. Wynn, D.A. Bonn, R. Liang, W.N. Hardy, J.R. Kirtley, V.G. Kogan and K.A. Moler. "Manipulation of single vortices in YBa2Cu3O6.354 with a locally applied magnetic field." Applied Physics Letters 80, 1010-1012 (2002).

D.A. Bonn, J.C. Wynn, B.W. Gardner, Yu-Ju Lin, R. Liang, W.N. Hardy, J.R. Kirtley and K.A. Moler. "A limit on spin-charge separation in high-Tc superconductors from the absence of a vortex-memory effect." Nature 414, 887-889 (2001).

J.C. Wynn, D.A. Bonn, B.W. Gardner, Yu-Ju Lin, R. Liang, W.N. Hardy, J.R. Kirtley and K.A. Moler. "Limits on spin-charge separation from h/2e fluxoids in very underdoped YBa2Cu3O6+x." Physical Review Letters 87, 197002/1-4 (2001).

B.W. Gardner, J.C. Wynn, P.G. Björnsson, E.W.J. Straver, K.A. Moler, J.R. Kirtley and M.B. Ketchen. "Scanning superconducting quantum interference device susceptometry." Review of Scientific Instruments 72, 2361-2364 (2001).

Ph.D. Dissertation

J.W. Guikema.  Scanning Hall probe microscopy of magnetic vortices in very underdoped yttrium-barium-copper-oxide. Stanford University, Department of Physics (March 2004).  [abstract (html)]  [full document (pdf 5.2MB)]


LINKS

Condensed Matter Physics at JHU
Ralph Lab at Cornell
Moler Lab at Stanford

Eric Weisstein's World of Physics
HyperPhysics
NIST Physical Reference Data
WebElements Periodic Table
Wolfram MathWorld

My Personal Page


CONTACT INFORMATION

Dr. Janice Wynn Guikema
Department of Physics & Astronomy
Johns Hopkins University
3400 N. Charles Street
Baltimore, MD  21218

office: Bloomberg 301
phone: 410-516-6822
guikema@pha.jhu.edu

Top Education & Appointments Publications Links Contact Information