72. ``The Berezinskii-Kosterlitz-Thouless phase transition for the
dilute planar rotator model on a triangular lattice,'' Yun-Zhou Sun, Lin Yi
and G. M. Wysin,
Phys. Rev. B 78, 155409 (2008) [5 pages].
Preprint:
BKT-tri08.pdf (1.1 MB);
71. ``Influence of a perpendicular current on the circulation of a
pinned magnetic vortex,'' G. M. Wysin, in special
Review Book: ``Electromagnetic, Magnetostatic and Exchange
Interaction Vortices in Confined Magnetic Structures,'' edited
by Eugene Kamenetskii (Research Signpost, India 2008).
Preprint:
hole-vortex08.pdf (1.0 MB);
70. ``Hole-vortex-magnons interactions in diluted layered antiferromagnets
with planar symmetry,'' A. R. Pereira and G. M. Wysin,
Phys. Rev. B 73, 214402 (2006) [16 pages].
Preprint:
zipped RevTex (290 kB).
afhole06.pdf (8.9 MB);
69. ``Electromagnetic modes in dielectric equilateral triangle
resonators,'' G. M. Wysin,
J. Opt. Soc. Amer. B 23, 1586-1599 (2006) [14 pages].
Preprint:
zipped RevTeX (1.0 MB);
dieETR05.pdf (8.0 MB).
68. ``Contribution of impurity-pinned vortices to the response function
in a randomly diluted easy-plane ferromagnet on a square lattice,''
Fagner M. Paula, Afranio R. Pereira and Gary M. Wysin,
Phys. Rev. B 72, 094425 (2005) [5 pages].
Preprint: correlation05.pdf (150 kB).
67. ``Extinction of BKT transition by nonmagnetic disorder in
planar-symmetry spin models,''
G.M. Wysin, I.A. Marques, S.A. Leonel, P.Z. Couro and A.R. Pereira,
Phys. Rev. B 72, 094418 (2005) [10 pages].
Preprint:
zipped RevTeX (180 kB);
vacTc05.pdf (800 kB).
66. ``Resonant mode lifetimes due to boundary wave emission in
equilateral triangular dielectric cavities,'' G.M. Wysin,
J. Opt. A: Pure Appl. Opt. 7, 502-509 (2005) [8 pages].
Preprint:
zipped RevTeX (98 kB);
triTAU05.pdf (290 kB).
65.``Vacancy effects in an easy-plane Heisenberg model:
Reduction of T_c and doubly-charged vortices,''
G.M. Wysin,
Phys. Rev. B 71, 094423 (2005) [11 pages].
Preprint:
zipped RevTeX (153 kB);
vacmc04.pdf (1 MB).
64.``Amplitudes for magnon scattering by vortices in two-dimensional
weakly easy-plane ferromagnets,'' Denis D. Sheka, Ivan A. Yastremsky,
Boris A. Ivanov, Gary M. Wysin and Franz G. Mertens,
Phys. Rev. B 69, 054429 (2004) [13 pages].
Preprint:
zipped RevTeX (62 kB);
denis03.pdf (371 kB).
63. ``Vortex--vacancy interactions in two-dimensional easy-plane magnets,''
G.M. Wysin,
Phys. Rev. B 68, 184411 (2003) [11 pages].
Preprint:
zipped RevTeX (73 kB);
v-v03.pdf (420 kB).
62. ``Magnon modes for a circular two-dimensional easy-plane ferromagnet
in the cone state,'' B.A. Ivanov and G.M. Wysin,
Phys. Rev. B 65, 134434 (2002) [17 pages].
Preprint:
zipped RevTeX (800 kB);
cone01.pdf (1.2 MB).
61. ``Relaxation schemes for normal modes of magnetic vortices:
Application to the scattering matrix,'' G.M. Wysin,
Phys. Rev. B 63, 94402 (2001) [14 pages].
Preprint:
zipped RevTeX (78 kB).
taueig00.pdf (366 kB).
60. ``Spinwave damping in the two-dimensional ferromagnetic XY model,''
G.M. Wysin, M.E. Gouvêa and A.S.T. Pires,
Phys. Rev. B 62, 11585 (2000) [15 pages].
Preprint:
zipped RevTeX (450 kB).
Gamma00.pdf (2.4 MB).
59. ``Onsager reaction-field theory for magnetic models on
diamond and hcp lattices,'' G.M. Wysin,
Phys. Rev. B 62, 3251 (2000) [8 pages].
Preprint:
zipped RevTeX (27 kB);
orf2000.pdf (220 kB).
58. ``Correlated molecular-field theory for Ising models,''
G.M. Wysin and J. Kaplan,
Phys. Rev. E 61, 6399 (2000) [5 pages].
Preprint:
zipped RevTeX (71 kB);
modmf00.pdf (120 kB).
57. ``Low temperature static and dynamic behavior of the
two-dimensional easy axis Heisenberg model,''
M.E. Gouvêa, G.M. Wysin, S. A. Leonel,
A.S.T. Pires, T. Kamppeter and F.G. Mertens,
Phys. Rev. B 59, 6229-6238 (1999) [10 pages].
Preprint:
zipped RevTeX (130 kB);
easy98.pdf (500 kB).
56. ``Magnon modes and magnon-vortex scattering in 2D
easy-plane ferromagnets,'' B.A. Ivanov, H.-J. Schnitzer,
F.G. Mertens and G.M. Wysin,
Phys. Rev. B 58, 8464 (1998) [11 pages].
Preprint:
zipped RevTeX (54 kB);
magnon98.pdf (270 kB).
55. ``Onsager reaction field theory for 3d anisotropic xy model,''
M.E. Gouvêa, A.S.T. Pires and G.M. Wysin,
Phys. Rev. B 58, 2399 (1998) [4 pages].
Preprint:
zipped RevTeX (24 kB);
brief98.pdf (144 kB).
54. ``Free vortex and vortex-pair lifetimes in
classical two-dimensional easy-plane magnets,''
D.A. Dimitrov and G.M. Wysin,
J. Phys. C 10, 7453 (1998) [13 pages].
Preprint:
zipped RevTeX (27 kB);
life98.pdf (170 kB).
53. ``Localized magnon mode of in-plane magnetic vortices
in easy-plane magnets,''
G.M. Wysin, M.E. Gouvêa and A.S.T. Pires,
Phys. Rev. B 57, 8274 (1998) [11 pages].
Preprint:
zipped RevTeX (65 kB);
critm97.pdf (250 kB).
52. ``Critical anisotropies of two-dimensional magnetic vortices,''
G.M. Wysin,
Phys. Lett. A 240, 95 (1998) [5 pages].
Preprint:
zipped elsart LaTeX (70 kB);
crit97.pdf (120 kB).
51. ``Comment on `Static and dynamic simulation in the classical
two-dimensional anisotropic Heisenberg model',''
M.E. Gouvêa and G.M. Wysin,
Phys. Rev. B 56, 14192 (1997) [3 pages].
Preprint:
zipped RevTeX (30 kB);
prcom96.pdf (128 kB).
50. ``Numerical study of vortices in a two-dimensional XY model
with in-plane magnetic field,''
M.E. Gouvêa, G.M. Wysin and A.S.T. Pires,
Phys. Rev. B 55, 14144 (1997) [4 pages].
Preprint:
zipped RevTeX (115 kB);
2dxyb96.pdf (186 kB).
49. ``Magnetic vortex mass in 2D easy-plane magnets,'' G.M. Wysin,
Phys. Rev. B 54, 15156 (1996) [7 pages].
Preprint:
zipped RevTeX (82 kB);
vmass96.pdf (250 kB).
48. ``Comparison of vortex normal modes in easy-plane
ferromagnets and antiferromagnets,''
G.M. Wysin and A.R. V\"okel,
Phys. Rev. B 54, 12921. (1996) [11 pages].
Preprint:
zipped RevTeX (402 kB);
afmodes96.pdf (860 kB).
47. ``Magnetic properties of superparamagnetic particles by a
Monte Carlo method,'' D.A. Dimitrov and G.M. Wysin,
Phys. Rev. B 54, 9237 (1996) [5 pages].
Preprint:
zipped RevTeX (52 kB);
spara96.pdf (219 kB).
46. ``Lifetime of vortices in 2D easy-plane ferromagnets,''
D.A. Dimitrov and G.M. Wysin,
Phys. Rev. B 53, 8539 (1996) [4 pages].
Preprint:
html or
zipped RevTeX (51 kB) or
life_pre.pdf (176 kB).
45. ``Normal modes and soliton resonance for vortices
in 2D classical antiferromagnets,''
B.A. Ivanov, A.K. Kolezhuk and G.M. Wysin,
Phys. Rev. Lett. 76, 511 (1996) [4 pages].
Preprint:
html or
zipped RevTeX (74 kB) or
lm95.pdf (228 kB).
44. ``Normal modes of vortices in easy-plane ferromagnets,''
G.M. Wysin and A.R. Völkel,
Phys. Rev. B 52, 7412 (1995) [16 pages].
Preprint:
(html) or
zipped LaTeX (411 kB) or
fmodes95.pdf (820 kB).
43.``Magnetic properties of spherical fcc clusters with radial surface
anisotropy,'' D.A. Dimitrov and G.M. Wysin,
Phys. Rev. B 51, 11,947 (1995) [4 pages].
Preprint:
zipped RevTeX (90 kB);
fine94.pdf (620 kB).
42. ``Collective variable approach to the dynamics of non-linear
magnetic excitations with application to vortices,'' A.R. Völkel,
G.M. Wysin, F.G. Mertens, A.R. Bishop and H.J. Schnitzer,
Phys. Rev. B 50, 12711 (1994) [10 pages].
Preprint:
collectvar94.pdf (2.0 MB).
41. ``Effects of surface anisotropy on hysteresis in fine magnetic
particles,'' D.A. Dimitrov and G.M. Wysin,
Phys. Rev. B 50, 3077 (1994) [8 pages].
Preprint:
zipped RevTeX (175 kB);
effects94.pdf (870 kB).
40. ``Instability of in-plane vortices in two-dimensional easy-plane
ferromagnets,'' G.M. Wysin,
Phys. Rev. B 49, 8780 (1994) [10 pages].
Preprint:
zipped TeX (57 kB);
vort94.pdf (206 kB).
39. ``Collective variable approach for a magnetic n-vortex system,'' A. R. Völkel, F. G. Mertens, G. M. Wysin, A. R. Bishop and H. J. Schnitzer, in proceedings of workshop at University of Bayreuth, Germany, June 1-4, 1993, Nonlinear Coherent Structures in Physics and Biology, p. 199, (Plenum Press, New York, 1994) [8 pages]. Preprint: collective94.pdf (1.3 MB).
38. ``Cyclotron-like oscillations and boundary effects in the 2-vortex dynamics of easy-plane magnets,'' F. G. Mertens, G. M. Wysin, A. R. Völkel, A. R. Bishop and H. J. Schnitzer, in proceedings of workshop at University of Bayreuth, Germany, June 1-4, 1993, Nonlinear Coherent Structures in Physics and Biology, p. 191, (Plenum Press, New York, 1994) [7 pages]. Preprint: cyclotron94.pdf (1.1 MB).
37. ``Mass and momentum for vortices in two-dimensional easy-plane magnets,'' G.M. Wysin, F.G. Mertens, A.R. Völkel and A.R. Bishop, in proceedings of workshop at University of Bayreuth, Germany, June 1-4, 1993, Nonlinear Coherent Structures in Physics and Biology, p. 177, (Plenum Press, New York, 1994) [10 pages]. Preprint: mass94.pdf (1.7 MB).
36. ``Spin dynamics for 2D Heisenberg antiferromagnets with combined
easy-plane and Dzyaloshinsky interactions,''
A.R. Völkel, F.G. Mertens, A.R. Bishop and G.M. Wysin,
Annalen der Physik, 505, Issue 3, 308-319, (1993) [12 pages].
Preprint:
spindyn93.pdf (1.2 MB).
35. ``A one-dimensional statistical mechanics model with exact transfer
integral solution,'' G.M. Wysin,
Amer. J. Phys. 61, 734 (1993) [7 pages].
Preprint:
zipped TeX (23 kB);
bspin93.pdf (145 kB).
34. ``Dynamics of vortices in quasi-two-dimensional classical Heisenberg
magnets with weak easy-plane anisotropy,'' A.R. Völkel, A.R. Bishop,
F.G. Mertens and G.M. Wysin,
J. Phys.: Condens. Matter 4, 9411 (1992) [12 pages].
33. ``Vortex dynamics in the classical two-dimensional antiferromagnetic
$XY$ model,'' A.R. Völkel, F.G. Mertens, G.M. Wysin and A.R. Bishop,
J. Magn. Magn. Mater. 104-107, 766 (1992) [3 pages].
32. ``Reply to Comment on `Dynamic correlations in a classical
two-dimensional Heisenberg antiferromagnet' ,'' G.M. Wysin and A.R. Bishop,
Phys. Rev. B 45, 10,812 (1992) [2 pages].
31. ``Central peak signatures from vortices in 2-D easy-plane antiferromgnets,'' F.G. Mertens, A.R. Völkel, G.M. Wysin and A.R. Bishop, in proceedings of workshop at Dijon, France, June 4--6, 1991, Nonlinear Coherent Structures in Physics and Biology, p. 15, Springer-Verlag Lecture Notes in Physics (1991) [8 pages]. Preprint: centralpeak91.pdf (1.2 MB).
30. ``Equations of motion for vortices in 2-D easy-plane magnets,'' G.M. Wysin and F.G. Mertens, in proceedings of workshop at Dijon, France, June 4--6, 1991, Nonlinear Coherent Structures in Physics and Biology, Springer-Verlag Lecture Notes in Physics (1991) [12 pages]. Preprint: equations91.pdf (1.9 MB).
29. ``Dynamic correlations in the classical two-dimensional
antiferromagnetic Heisenberg model with easy-plane symmetry,'' A.R.
Völkel, G.M. Wysin, A.R. Bishop and F.G. Mertens,
Phys. Rev. B 44, 10,066 (1991) [13 pages].
Preprint:
easyAF91.pdf (2.1 MB).
28. ``Motion of vortex pairs in the ferromagnetic and antiferromagnetic
anisotropic Heisenberg models,'' A.R. Völkel, F.G. Mertens, A.R. Bishop
and G.M. Wysin,
Phys. Rev. B 43, 5992 (1991) [14 pages].
Preprint:
motion91.pdf (2.5 MB).
27. ``Dynamic scaling in the two-dimensional Heisenberg antiferromagnet,'' G.M. Wysin and A.R. Bishop, in proceedings of forum at Florence, Italy, June 7-13, 1990, Microscopic Aspects of Nonlinearity in Condensed Matter, p. 353, (Plenum Press, New York 1991) [5 pages]. Preprint: dynamicscaling91.pdf (887 kB).
26. ``On the motion of vortex pairs in the anisotropic Heisenberg model,'' A.R. Völkel, F.G. Mertens, A.R. Bishop and G.M. Wysin, in proceedings of forum at Florence, Italy, June 7-13, 1990, Microscopic Aspects of Nonlinearity in Condensed Matter, p. 189, (Plenum Press, New York 1991) [4 pages]. Preprint: vpairs91.pdf (707 kB).
25. ``Dynamic correlations in the two-dimensional Heisenberg
antiferromagnet,'' G.M. Wysin and A.R. Bishop,
Phys. Rev. B 42, 810 (1990) [10 pages].
Preprint:
dyncorr90.pdf (2.2 MB).
24. ``The classical two-dimensional XY model with in-plane magnetic field,''
M.E. Gouvêa, F.G. Mertens, A.R. Bishop and G.M. Wysin,
J. Phys.: Condens. Matter 2, 1853 (1990) [14 pages].
Preprint:
xyb90.pdf (2.3 MB).
23. ``Aspects of classical excitations in two-dimensional magnetic systems,'' G. M. Wysin, in proceedings of workshop at Ouro Prêto, Brazil, Aug. 8-11, 1989, Computational Physics and Cellular Automata, p. 29, (World Scientific Publishing Co. 1990) [19 pages]. Preprint: excitations90.pdf (2.8 MB).
22. ``Vortices in the classical two-dimensional anisotropic Heisenberg
model,'' M.E. Gouvêa, G.M. Wysin, A.R. Bishop and F.G. Mertens,
Phys. Rev. B 39, 11840 (1989) [10 pages].
Preprint:
vortices89.pdf (2.5 MB).
21. ``Rb$_{2}$CrCl$_{4}$: Studies of a two-dimensional classical
easy-plane Heisenberg model with in-plane symmetry breaking,''
M.E. Gouvêa, G.M. Wysin, A.R. Bishop and F.G. Mertens,
J. Phys.: Condens. Matter 1, 4387 (1989) [13 pages].
Preprint:
RbCrCl89.pdf (2.0 MB).
20. ``Dynamical correlations from mobile vortices in two-dimensional
easy-plane ferromagnets,'' F.G. Mertens, A.R. Bishop, G.M. Wysin and
C. Kawabata,
Phys. Rev. B 39, 591 (1989) [12 pages].
Preprint:
dynamical89.pdf (2.9 MB).
19. ``Classical spin dynamics in the two-dimensional anisotropic Heisenberg model,'' G.M. Wysin, M.E. Gouvêa, A.R. Bishop and F.G. Mertens, proceedings of workshop at Athens, Georgia, Feb. 15--26, 1988, Computer Simulation Studies in Condensed Matter Physics: Recent Developments, p. 40, eds. D.P. Landau and H.B. Schuttler, Springer Proc. Phys. (Springer, Berlin, Heidelberg, 1988) [9 pages]. Preprint: heisenberg88.pdf (1.6 MB).
18. ``Picosecond response of photoexcited GaAs in a uniform electric
field by Monte Carlo dynamics,''
G.M. Wysin, D.L. Smith and A. Redondo,
Phys. Rev. B 38, 12,514 (1988) [11 pages].
Preprint:
pico_GaAs88.pdf (2.8 MB).
17. ``Dynamics of unbound vortices in the 2-dimensional XY and anisotropic Heisenberg models,'' F.G. Mertens, A.R. Bishop, M.E. Gouvêa and G.M. Wysin, Int. Conf. on Magnetism (Paris, 1988), J. de Physique, Colloque, 49, C8-1385 (1988) [2 pages].
16. ``Overshoot in the response of a photoconductor excited by
subpicosecond pulses,'' A.E. Iverson, G.M. Wysin, D.L. Smith and A. Redondo,
Applied Physics Letters 52, 2148 (1988) [3 pages].
Preprint:
overshoot88.pdf (0.90 MB).
15. ``How vortices produce central peaks in the dynamic form factor of the 2-D anisotropic Heisenberg model,'' F.G. Mertens, A.R. Bishop, G. Wysin and C. Kawabata, Kinam 8A, 153 (1987) [13 pages].
14. ``Thermomagnetic transport coefficients: Solitons in an easy-plane
magnetic chain,'' G.M. Wysin and P. Kumar,
Phys. Rev. B 36, 7063 (1987) [8 pages].
Preprint:
thermomag87.pdf (2.0 MB).
13. ``Vortex signatures in dynamic structure factors for two-dimensional
easy-plane ferromagnets,'' F.G. Mertens, A.R. Bishop, G.M. Wysin and
C. Kawabata,
Phys. Rev. Lett. 59, 117 (1987) [4 pages].
Preprint:
vortex87.pdf (0.96 MB).
12. ``Kink-Antikink scattering for an easy-plane one-dimensional
antiferromagnet,'' G.M. Wysin and A.R. Bishop,
J. Phys. C 20, 2361 (1987) [13 pages].
Preprint:
kink87.pdf (2.3 MB).
11. ``One-dimensional easy-plane magnets: Classical sine-Gordon theory or a quantum model?'' G.M. Wysin and A.R. Bishop, Proceedings of Sixth Annual Center for Nonlinear Studies Conference, May 4--9, 1986, Los Alamos, Nonlinearities in Condensed Matter, Springer-Verlag [10 pages]. Preprint: 1DEPM86.pdf (1.4 MB).
10. ``Quantum Monte Carlo and transfer matrix calculations for 1-D
easy-plane ferromagnets,'' G.M. Wysin and A.R. Bishop,
Phys. Rev. B 34, 3377 (1986) [11 pages].
Preprint:
QMC86.pdf (2.5 MB).
9. ``Chaos and coherence in classical one-dimensional magnets,'' G.M. Wysin
and A.R. Bishop, Proceedings of the International Conference on Magnetism,
1985, at San Francisco, in
J. Mag. Magn. Mat. 54-57, 1132 (1986) [3 pages].
Preprint:
chaos86.pdf (605 kB).
8. ``Easy-plane antiferromagnetic kinks,'' G.M. Wysin, A.R. Bishop
and J. Oitmaa, Proceedings of the International Conference on Magnetism,
1985, at San Francisco, in
J. Mag. Magn. Mat. 54-57, 831 (1986) [2 pages].
Preprint:
EPAF86.pdf (545 kB).
7. ``Single kink dynamics in an easy-plane classical antiferromagnetic
chain,'' G.M. Wysin, A.R. Bishop and J. Oitmaa,
J. Phys. C 19, 221, (1986) [13 pages].
Preprint:
singlekink86.pdf (1.8 MB).
6. ``Pattern selection and low-dimensional chaos in dissipative many degree-of-freedom systems,'' A.R. Bishop, J.C. Eilbeck, I. Satija and G. Wysin, in Lectures in Applied Mathematics, AMS-SIAM Summer Seminar, Santa Fe, NM, July 22--August 4, 1984; in Lec. Appl. Math. 23, 125 (1986) [11 pages]. Preprint: pattern86.pdf (0.97 MB).
5. ``Further theoretical studies of nonlinear conformational motions in double-helix DNA,'' J.A. Krumhansl, G.M. Wysin, D.M. Alexander, A. Garcia, P.S. Lomdahl and S.P. Layne, Proceedings of Conference on Dynamics and Structure of Biopolymers, in Rome, April 1984. Structure and Motion: Membranes, Nucleic Acids and Proteins, 407-416, [E. Clementi, G. Corongiu, M. H. Sarma and R. H. Sarma, editors], Adenine Press (1985) [10 pages]. Preprint: dna85.pdf (1.4 MB).
4. ``Quantum Monte Carlo study of a spin-half chain,'' I. Satija,
G. Wysin and A.R. Bishop,
Phys. Rev. B 31, 3205 (1985) [4 pages].
Preprint:
QMhalf85.pdf (900 kB).
3. ``Soliton dynamics on an easy-plane ferromagnetic chain,'' G. Wysin,
A.R. Bishop and P. Kumar,
J. Phys. C 17, 5975 (1984) [16 pages].
Preprint:
soliton84.pdf (2.3 MB).
2. ``Soliton dynamics on a ferromagnetic chain,'' G. Wysin, A.R. Bishop
and P. Kumar,
J. Phys. C 15, L337 (1982) [7 pages].
Preprint:
soliton82.pdf (0.96 MB).
1. ``Optical bistability with surface plasmons,'' G.M. Wysin,
H.J. Simon and R.T. Deck,
Optics Letters (U.S.A.) 6, 30 (1981) [3 pages].
Preprint:
opti-bistability81.pdf (850 kB).