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Janice Wynn Guikema
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Janice is a researcher in the experimental condensed matter physics group at Johns Hopkins University. Her interests include nanoscale physics, scanning probe microscopy, and superconductivity. Currently she is working on graphene. Janice came to Johns Hopkins from Texas A&M where she taught physics for two years. Previously, she was a postdoc at Cornell where she studied single molecule transistors in Dan Ralph's group. 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.

NEWS:  Janice is a recipient of the 2008 M. Hildred Blewett Scholarship from the APS.  See the APS News article.


EDUCATION & APPOINTMENTS
2009-present
2008-2009		 Associate Research Scientist, Department of Physics & Astronomy
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

Women in Physics (APS)

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

Personal Photo Album (contact me to request password)


CONTACT INFORMATION

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

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