Curriculum vitae of Nikolai Sinitsyn,

Title:  Director's funded postdoc fellow. 
Place of birth: Minsk, Belarus
Office: CNLS 132
Address: CNLS, Mail Stop B258, 
Los Alamos, NM 87545
E-mail address: nsinitsyn@lanl.gov
Office Phone: 505-665-3125 



Work experience

        Sept. 2006 - present. Los Alamos National Lab. Center for Nonlinear
	      Studies and Computer, Computational and Statistical Sciences Division.
	Title: Research Associate, Research Fellow since 2007

        June 2006-Aug. 2006.  Texas A&M University, Dept. of Physics
	Title: Postdoc.         
 
	June 2004 - May 2006. University of Texas at Austin. Dept. of Physics
	Title: Postdoc.


Education
	
	August 1999-May 2004      Texas A&M University. Department of Physics.
	Degree: Ph.D. in theoretical condensed matter physics.
	Scientific adviser: Prof. V.L. Pokrovsky.
	Thesis: Generalizations of the Landau-Zener theory in the 
	physics nanoscale systems.
	
	August, 2003 Practical training at Ames Laboratory. Project: Numerical 
	simulations of nuclear spin bath effects in molecular nanomagnets.
	Advisers: Professor B. Harmon and Professor V. Dobrovitski
	
	August, 1994 - June 1999     Belarus State University.  
	Department of Physics. Specialization: Theoretical Physics. 
	Degree: B.Sc. (with distinction). Diploma work: Path integrals over 
	closed loops in effective Lagrangian calculations. Adviser: 
	Prof. Artur Y. Tregubovich




Conferences and Schools (last updated: Aug. 2006)
      March 2006	APS march meeting. Report: Edge states in graphene.
      November 2005 	Argonne Superconductivity and Magnetism miniconference. 
      			Report: Disorder contributions to the Anomalous Hall
			Effect
      July 2005 	Boulder Summer School on mesoscopics.
      July 2003 	Boulder Summer School "Frontiers in Magnetism"
      March 2003 	APS march meeting. Report Fast noise in Landau-Zener theory
      October 2002 	Argonne Superconductivity and Magnetism Workshop. 
      			Report: Landau-Zener theory for mesoscopic systems
      March 2002 APS march meeting. Report Landau-Zener transitions in a linear chain
      October 2001      Argonne Superconductivity and Magnetism Workshop
      May 2001          Conference Nanomeeting 2001, Report: Molecular 
      			nanomagnets in ac magnetic field, Minsk, Belarus
      August 1998       the Workshop of Classical and Quantum Aspects of 
      			Disorder, Jyvaskyla, Finland. Report: Intermittency in 
			the model of particle production from multiparticle clusters.
      August - September 1997      GSI Summer School, Darmstadt, Germany 1997, 
      			project: Software development for data acquisition 
			from the Pestoff counter.


Invited talks
    March 2007  APS meeting. "Semiclassical theory of the Anomalous Hall
		effect""
    January 2007 Texas A&M University, Simposium in hornor of Valery L.
		Pokrovsky. "Berry phase and time scale separation in
		stochastic chemical kinetics"
    May 2006,   Texas A&M University, Dept. of physics. "Disorder contributons
		to the anomalous Hall effect.
    April 2006, LANL, "Berry phase effects in metals
    March 2006, Universtiy of Minnesota, "Anomalous Hall effect."
    June 2003,  Rutgers University (condensed matter seminar) 
    		Presentation: Landau-Zener theory in mesoscopic physics.
    April 2003, University of Texas, Austin (condensed matter seminar) 
    		Presentation: Noise in Landau-Zener theory.



Experience with computations

1.      C++, Fortran90.
2.      Parallel computations with MPI and OpenMP.



Resume of main achievements (last updated: Aug. 2006) 

(NO: many results below were derived in collaboration
with other people, see the list of publications for details).

(i) Anomalous Hall Effect. 
Explained  physics of disorder effects and their 
relations to the Berry phase in Bloch bands. Developed the 
technique to incorporate the wave packet equations in semiclassical 
Boltzmann equation. Designed novel analytical 
approaches to calculate the coordinate shift at a scattering event
 (the side jump) in Born approximation
from the scattering matrix or, in case of a smooth disorder, 
from solving wavepacket equations. Demonstrated equivalence of semiclassical 
techniques with rigorous Kubo-formula calculations.

(ii) Spin Hall Effect and Spintronics. 
Was one of the co-authors of several earliest work that predicted the Intrinsic 
Spin Hall Effect. Found non-analytical behavior of 
spintronic effects in the first response approximation near the 
critical point of a 2D electron gas with Rashba+Dresselhous couplings.
Calculated spin Hall current in metallic graphene. 

(iii) Landau-Zener (LZ) theory.
Formulated the "no-go" theorem that exactly forbids transitions 
among some types of states during multiple LZ anticrossings. 
In collaboration with Bogdan Dobrescu we solved for the final missing 
step in the rigorous proof of the Brundobler-Elser formula, which 
is the exact result that had the status of a conjecture. 
Employed symmetries to derive several other new classes 
of exactly solvable multistate LZ-models; for this designed a 
technique that generalizes the Schwinger bosons idea.
Derived the most general formula for the LZ transition probability 
of a two-level system coupled to an arbitrary fast noise and a 
regular field. 

(iv) Molecular Nanomagnets.
Explained the robustness 
of the transition probability at fast sweeps of the external 
fields. Predicted deviations at slower sweeping rates both from the 
LZ formula and from the theory that mimics the spin bath effects 
by a stationary noise. Performed first direct quantum mechanical 
simulations of spin bath effects on the relaxation of the molecular spin.