Last Modified: December 15, 2003

Gregory S. Jenkins

• e-mail: hsgsj@physics.umd.edu

• Phone: (301) 793-2055

• FAX:   (301) 314-9465

Ph.D. Thesis: IR Hall Effect in Single Crystal Bi-2212 

in PDF Format:

Entire Thesis (83 Mb)

 

Abstract

 

Front Matter: TOC

Chapter 1

Chapter 2 

Chapter 3 

Chapter 4

Chapter 5

Chapter 6

Appendix A and B

Appendix C, D, E, F + Bibliography

 

CV

 

 

ADDRESS	Present Permanent 5903 Taylor Road 1213 Circle Lane Riverdale, MD, 20737 Bedford, TX 76022 (301) 793-2055 (817) 540-4628
EDUCATION	University of Maryland, College Park University of Maryland, College Park Ph.D. in Physics M.S. in Physics December, 2003 December, 1998     University of Texas, Austin   B.S. in Physics   December, 1993

PUBLICATIONS

FIR Hall Effect in Single Crystal Bi₂Sr₂CaCu₂O_8+x, Ph.D. thesis, University of Maryland at College Park, Dec. 2003

 

FIR Hall Effect instrumentation, to be published, 2004

 

FIR Hall Effect in Single Crystal Bi₂Sr₂CaCu₂O_8+x, to be published, 2004

 

FIR Hall Effect in Single Crystal Bi₂Sr₂CaCu₂O_8+x, APS March meeting, to be presented, 2004

 

Far-infrared study of YBa₂Cu₃O_6.4 films near the metal-insulator transition, G. S. Jenkins, H. D. Drew, APS March meeting 2001

 

Dependence of the IR Hall effect on the Oxygen doping in YBCO films, L.B. Rigal, D.C. Schmadel, J.C. Cerne, M. Grayson, G.S. Jenkins, J.R. Simpson, H.D. Drew, APS March meeting 2001

 

Infrared Hall Effect in High- Tc Superconductors: Evidence for Non-Fermi-Liquid Hall Scattering, J. Cerne, M. Grayson, D. C. Schmadel, G. S. Jenkins, H. D. Drew, R. Hughes, A. Dabkowski, J. S. Preston, and P.-J. Kung, Phys. Rev. Lett. 84, 3418-3421 (2000)

 

Optical studies of the metal-insulator transition in photodoped YBa₂Cu₃O_6+x films, G. S. Jenkins, H. D. Drew, APS March meeting 2000

 

Mid-infrared Hall effect in thin-film metals: Probing the Fermi surface anisotropy in Au and Cu, J. Cerne, D. C. Schmadel, M. Grayson, G. S. Jenkins, J. R. Simpson, and H. D. Drew, Phys. Rev. B 61, 8133-8140 (2000)

 

Mid-infrared Hall measurements in YBCO films: Strong temperature dependence of the Hall conductivity, J. Cerne, M. Grayson, D.C. Schmadel, G.S. Jenkins, J.R. Simpson, H.D. Drew, APS March meeting 2000

 

Single Electron Transistor measurements: sputtered AuPd dirty conductors and Anderson localization, G. S. Jenkins, Center for Superconductivity Center, University of Maryland seminar, 1996

 

RESEARCH

Graduate Research Assistant funded by NSF Sept.1998 – Dec. 2003, University of Maryland, Prof. H. D. Drew

experiments: FIR ac- Hall effect in high-Tc superconductor; Metal-insulator transition of photodoped YBCO: ac- conductivity using broadband FT spectroscopy with Bomem DA3, step-scan FT-FIR SpecAc spectrometer with He3 bolometer system, 100GHz waveguide transmission, and dc- resistivity measurements

skills: design and construction of heterodyne FIR optical system; design and construction of magnetic susceptibility probe; design and construction of He3 closed system for use with bolometer detector;  design and construction of photodoping optical system utilizing a 9W diode laser array; construction and characterization of CO2 laser pumped FIR laser; modification of 100GHz Gunn diode waveguide system; extensive experience with high-Tc magnets and operation; fabrication of broadband FIR AR-coatings using deposition system; extensive modeling and analysis using Mathematica; various low temperature techniques; extensive Labview control/data acquisition software programming; extensive drafting, machining (lathes, saws, milling machines, drill presses, etc.), hard soldering, and welding experience; experience with step motors, servo motors, low vacuum systems, lock-in amplifiers, temperature controllers, HP spectrum analyzer, HP 6035E a/d-d/a programming, diode and bolometer detectors, vapor degreaser, He leak detectors, diffusion and turbo pump systems, mass flow controller; analog circuit design (filters, high frequency break-out box, ground loop isolation) and repair (Bomem DA3 control boards, pre-amplifiers); computer networking; installation of closed circulation cooling system; optical quality polishing of crystals (Si, GaAs, LAO, LSGO, quartz, etc.)

Graduate Research Assistant  June 1996 – June 1997, University of Maryland, College Park, Prof. R. A. Webb

experiment: single electron transistor fabrication and characterization

skills: JOEL scanning electron microscope (<50nm structures) multi-layer lithography; wire bonding; sputter deposition; ion/plasma etching; circuit repair (full EG&G lock-in calibration, rate monitor controller repair, Alcatel He leak detector mass spectrometer repair and calibration); mixed LAN of DOS, Windows 3.1, windows 95, and UNIX computers; IDL software;

Infinitex Technology June 1997-1998, Hyattsville, MD, acquired funding for independent programming project of MIDI graphical controller software for Windows 95 operating system

Teaching Assistant Sept 1994 – June 1996, June 1997 – June 1998; various introductory physics courses

Research Assistant  Jan. 1992 – Sept 1992, University of Texas, Austin, Department of Physics, Prof. Mark Raizen

experiment: design and construction of >5GHz electro-optical modulator

skills: design and construction of ultra-high vaccum pump station

Research Assistant  May 1991 – Jan. 1992, University of Texas, Applied Research Laboratories, Gette Beauvais,

experiment: locating submarines using  active sonar data and digital signal analysis techniques

skills: digital Fourier analysis techniques; programming in C and Fortran on VMS and UNIX platforms