COLLABORATIVE PROJECTS

1. In collaboration with Prof. Melkov from Kiev University, Ukraine we observed and theoretically described the effect of non-adiabatic
interaction of a spin wave pulse with strongly localized (localization length is of the order of the pulse carrier frequency wavelength). In
that case TWO (contra-propagating and co-propagating) parametric "idle" wave packets are  formed  as a result  of  parametric  interaction  with
pumping. Interference of the amplified input pulse  with  co-propagating "idle" wave packet leads to the amplitude and phase modulation of the output signal. The work was presented at the ICM-2000 International Conference on Magnetism in Recife, Brazil in August 2000. The paper is being prepared for submission to the Phys.Rev. Lett. in October 2000.

2. In collaboration with Dr. Benner from Darmstadt Technical University I worked on the problem of the influence of initial signal phase on  the
process of dark spin wave soliton formation in magnetic films. A paper is being prepared for the submission to the Phys.Rev. B.

3. In collaboration  with  Prof.  Hillebrands  from  the University of Kaiserslautern I did numerical calculations and planned the
experiment in which the interaction of  two-dimensional  nonlinear  spin wave packets (spin wave "bullets")  with  localized  parametric  pumping
will be studied by means of space-  and  time-resolved  Brillouin  light scattering. The paper on the preliminary  numerical  investigations   of
this effect is being prepared for publication in J.Appl.Phys.

4. In collaboration with Dr. Guslienko   from  the  Korean  Institute  of Advanced Studies, Seoul, South Korea  I derived the explicit expressions
for  tensorial  magnetostatic  Green's  functions  for  the  case  of  a rectangular prism, and calculated the  spectrum  of  spin  waves  in  an
isolated non-ellipsoidal rectangular magnetic  dot. These calculations allowed us to explain the experiments performed  in  permalloy  magnetic
dots  by  the  group  of  Prof.  Hillebrands  from  the   Kaiserslautern
University, Kaiserslautern, Germany. These results were reported at  the
16th International Colloquium on Magnetic Films  and  Surfaces  (ICMFS),
Natal, Brazil, August 2000.



Seminar or colloquium at another institution 

During the past  year  I presented lectures and seminars at the
following Universities and Research Institutes:


1."Spin  Wave Envelope  Solitons   in Magnetic Films", St.Petersburg
Technical University, St.Petersburg, Russia, May, 2000.

2. "Nonlinear Spin-Wave Dynamics in Ferromagnetic Films",St.Petersburg
Electrotechnical University, Russia, May 2000.

3. "Spin Wave Spectra of Non-Ellipsoidal Magnetic Dots", University   of
Kaiserslautern, Kaiserslautern, Germany, June 2000.

4."Nonlinear Theory of Spin Waves in Magnetic films", Technical
University of Darmstadt, Darmstadt, Germany, June 2000.

5. "Phase Conjugation of Linear and Nonlinear Signals  of  Magnetostatic
Waves", Institute of Energy Technology, Kjeller, Norway, June 2000.

COLLABORATION and CONSULTATION
List collaborators at other institutions with
their affiliations (especially if co-author).  

C. Zaspel, Montana State University;
C. Patton, Colorado State University;
H. Benner, Technnical University of  Darmstadt, Darmstadt, Germany;
B. Hillebrands, University of Kaiserslautern, Kaiserslautern, Germany;
B. Kalinikos, St.Petersburg Electrotechnical University, St.Petersburg,
Russia;
G.A. Melkov, Kiev State University, Kiev, Ukraine.
H. Hurdequint, Universite Paris-Sud, Orsay, France.
K. Guslienko, Korean Institute of Advanced Studies, Seoul, Korea.

VISITORS

H. Hurdequint, Universite Paris-Sud, Orsay, France, November 1999.
K.   Guslienko,   Korean   Institute   of   Advanced   Studies,   Seoul,
Korea, November 1999.
B. Kalinikos, St.Petersburg Electrotechnical University, St.Petersburg,
Russia, January 2000.
P. Kabos, National Institute of Standarts, Boulder, Colorado, May 2000
I. Rojdestvenski, University of Umea, Umea, Sweden, May 2000