Boston College, Department of Physics, Spring 2010
PH79917, index = 4326
Readings and Research
Instructor:
Fr. Cyril P. Opeil, S.J., Ph.D.
Assistant Professor
Office: Higgins 330J, 617-552-8450
Laboratory: Higgins 130, 617-552-3589
Office Hours: As posted at 330J:
Tuesday 3:15-5:00 PM
Thursday 3:15-5:00 PM
Friday 4:15-4:45 PM
To contact Fr. Opeil, S.J. outside of class the most efficient way is via email:
opeil@bc.edu, please feel free to call at 2-8450 or 2-3589 but do not leave a phone
message.
Scheduled class meeting times:
Friday = weekly 10:15 AM – 11:30 AM
Room = Higgins Hall 330J
The goals of this course are: (1) to provide a final draft of a paper submitted to
PRB or PhysicaB/C for publication on the doped V_3Si samples.** (2) To write a
computer program that bins data (user selected bin size bits of data) from the LS370
resistivity measurements and outputs in Origin a graph with x and y standard deviation
error bars. This program has to be user friendly and have directions on its use for future
binners. (3) Graph the InTl x% data in Origin using the bin program. (4) Read and
discuss the articles listed below that are associated with this project.
**The data from theses V3Si samples were obtained from experiments at NHMFL in
Tallahassee, FL, December 2009, by M. Almeida and C. P. Opeil, S.J.
Semester Schedule for Spring 2010
F-22Jan10
Discuss syllabus and scope of semester work.
F-29Jan10
(1) Sit and discuss with Fr. Opeil how to produce c11, c22 and c44
numbers from the RUS apparatus for the data on “stainless-steel” sample on the benchtop. This detailed procedure should be written up, pictures welcome.
(2) Review all data associated with V_3Si project. BC and NHMFL.
(3) Review scope of paper and prospective figures.
F-05Feb10
(1) Progress report on V_3Si data analysis.
(2) Article 1and 2, read and discuss
F-12Feb10
(1) Progress report on V_3Si data analysis.
(2) Article 3 and 4, read and discuss
F-19Feb10
F-26Feb10
F-12Mar10
F-19Mar10
F-26Mar10
F-09Apr10
F-16Apr10
F-23Apr10
F-30Apr10
F-07May10
F-14May10
(1) Progress report on V_3Si data analysis.
(2) Article 5 and 6, read and discuss
(1) Progress report on V_3Si data analysis.
(2) Article 7 and 8, read and discuss
(1) Progress report on V_3Si data analysis/writing.
(2) Article 9 and 10, read and discuss
No class, guest lecturer PH184.
(1) Progress report on V_3Si data analysis/writing.
(2) Article 11 and 12, read and discuss
(1) 1ST draft of V_3Si paper.
(2) Article 13 and 14, read and discuss
(1) Progress report on V_3Si data analysis/writing.
(2) Article 15 and 16, read and discuss
Delivery of “user friendly” binning program/demonstration.
(2) Article 17 and 18, read and discuss
Delivery of graphed InTl x% data
(2) Article 19 and 20, read and discuss
Submit paper to PRB or Physica B/C
Final Exam
*&+&*+&*+
The assigned articles associated with this course are listed below. Pdf copies of these
articles have been provided to the student.
Bibliography
1. Batterman, B. W. and C. S. Barrett, “Low-Temperature Structural Transformation in
V3Si” Physical Review 145, 296 (1966).
2. Dukan, S. and Z. Tesanovic, “deHaas-van Aphen Oscillations in Superconducting
State at High Magnetic Fields” Physical Review Letters 74, 2311 (1995).
3. Gapud, A. A. et al. “Electrical transport, magnetic, and structural properties of the
vortex lattice in superconducting V3Si” PhysicaB 329-333, 1363 (2003).
4. Gapud, A. A. et al., “Electrical transport, magnetic, and structural properties of the
vortex lattice of V3Si in the vicinity of the peak effect” Physical Review B 67 104516
(2003).
5. Hanaguri,T. et al., “Magnetic-field dependence of the London penetration depth in
type II superconductor V3Si” PhysicaC 246, 223 (1995).
6. Janssen, T. J. B. M., et al., “Quantitative investigation of the de Haas-van Alphen
effect in the superconducting state” Physical Review B, 57 11698 (1998).
7. Klein, B. M. et al., “Structural instabilities in A15 materials driven by anharmonic
phonons: a first-principles study” Physica B 296 120 (2001).
8. Kogan, V. G. et al., “Vortex Lattices in Cubic Superconductors” Physical Review
Letters 79 741 (1997).
9. Kupfer, H. et al., “Correlation of the vortex order-disorder transition with the
symmetry of the crystal lattice in V3Si” Physical Review B 67 064507 (2003).
10. Kupfer, H. et al., “Frozen disorder and edge contamination in magnetization
measurements of the Bragg glass phase” Physical Review B 70 144509 (2004).
11. Lu, Z. W. and B. M. Klein, “Anharmonic Effects in the A15 Compounds Induced by
Sublattice Distortions” Physical Review Letters 79 1361 (1997).
12. Ramirez, A. P., “Magnetic field dependent specific heat of V3Si – downward
curvature as a general feature of superconductivity” Physics Letters A 221 59 (1996).
13. Ravikumar, G., “Measurement of magnetic relaxation in the peak regime of V3Si”
Physica C 403 25 (2004).
14. Ravikumar, G., “Vortex-state metastability at low-field disorder-order transition”
Physical Review B 65 094507 (2002).
15. Ravikumar, G. and H. Kupfer, “Equilibrium magnetization in the vicinity of the
Bragg glass to vortex glass transition in V3Si” Physical Review B 72 144530 (2005).
16. Sonier, J. E. et al., “Shrinking MagneticVortices in V3Si due to Delocalized
Quasiparticle Core States: Confirmation of the Microscopic Theory for Interacting
Vortices” Physical Review Letters 93, 017002 (2004).
17. Sosolik, C. E. et al., “Real-space imaging of structural transitions in the vortex lattice
of V3Si” Physical Review B 68 140503R (2003).
18. Sugawara, K. “Screw-dislocation-induced plasticization of a pinned vortex lattice”
Physical Review B 64 174512 (2001).
19. Yethiraj, M. et al., “Temperature and field dependence of the flux-line-lattice
symmetry in V3Si” Physical Review B 72 060504R (2005).
20. Yethiraj, M. et al., “Flux Lattice Symmetry in V3Si: Nonlocal Effects in a High-k
Superconductor” Physical ReviewLetters 82 5112 (1999).
Science is full of surprises!