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Papers Submitted:

• ``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, submitted to PRB.
      Preprint: BKT-tri08.pdf (1.1 MB);

• ``Influence of a perpendicular current on the circulation of a pinned magnetic vortex,'' G. M. Wysin, for 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);

Highlighted Papers in Print:
(or see --> Complete Publication List )

• ``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: afhole06.pdf (8.9 MB);

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``The 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).

• ``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) (85 KB); fine94.pdf (620 kB).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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, on Nonlinear Coherent Structures in Physics and Biology, p. 177, (Plenum Press, New York, 1994) [10 pages].     Preprint: mass94.pdf (1.7 MB).

• ``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, on Nonlinear Coherent Structures in Physics and Biology, Springer-Verlag Lecture Notes in Physics (1991) [12 pages].     Preprint: equations91.pdf (1.9 MB).

• ``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).

• ``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).

• ``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).

• ``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).

• ``Relaxation schemes for normal modes of magnetic vortices: Application to scattering matrix,'' G.M. Wysin,
  Phys. Rev. B 63, 94402 (2001) [14 pages].     Preprint: (zipped RevTeX) (78 kB); taueig00.pdf (366 kB).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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) (60 kB); easy98.pdf (500 kB).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

• ``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).

--> Complete Publication List

Unpublished Reports:

• ``Nonlinear effects in low-dimensional magnetism: Solitons and vortices,'' A.R. Bishop, C. Kawabata, F.G. Mertens and G.M. Wysin,
  Miramare-Trieste Report IC/87/144, (July, 1987) [5 pages].     Preprint: nonlinear87.pdf (1.1 MB).

• ``Resonant modes in triangular dielectric cavities,'' G.M. Wysin,
  http://xxx.lanl.gov/physics/0409002 , or triangle04.pdf (635 kB) (August 31, 2004) [14 pages].

Other Links At KSU

• Kansas State University.
• KSU Physics Department.