Boris Ivlev

 

Email: ivlev@dec1.ifisica.uaslp.mx

 

Positions:

1973-1998 Landau Institute for Theoretical Physics, Moscow.

1991 University of Southern California, Los Angeles.

1992-1994 Swiss Federal Institute of Technology, Zurich.

1994- University of San Luis Potosi, San Luis Potosi.

2000- University of South Carolina, Columbia.

 

Research Interests:

The theory of non-equilibrium phenomena in superconductors. Study of influence of electromagnetic radiation, acoustic

waves, and electron injection on superconductors and Josephson junctions. Investigation of enhancement of

superconductivity under a high-frequency field.

 

Physics of resistive states of superconductors in d.c. electric fields. Treatment of phase slop centers as topological

objects and theory of current-voltage characteristics. General properties of dissipative systems and the principle of

minimum entropy production.

 

Theory of quantum mechanical processes in high-frequency fields. Application of the method of complex trajectories to the

semiclassical problem of the under-barrier motion under action of a.c. fields and short pulses. Non-linear spectroscopy

and quantum control by adapted pulses.

 

Particle and x-ray detectors on the base of tunnel junctions of superconductors. Possibility of detectors, which are able

to measure a particle energy.

 

Unusual thermodynamic properties of of the vortex lattice in superconductors: shear instabilities, vortex chain states,

oscillation of torque in layered superconductors, etc. Pinning of vortices and critical currents. The peculiar behavior of

the magnetic flux flow and the thermally activated flux creep. Quantum tunneling of vortices through the pinning potential.

 

Macroscopic quantum tunneling, including vortex tunneling in superconductors, the quantum motion of phase in Josephson

junctions, and the quantum dynamics of dislocations in solids. The instanton approach to the theory of semiclassical

motion including the multiple instanton situation.

 

Theory of vortex thermal and quantum fluctuations. Quantum liquid of vortices at low temperatures. Quantum vanishing of

the Pierls barrier for the motion of a point dislocation in the vortex lattice at low temperatures.

 

The theory of the anomalous Hall effect in the mixed state of superconductors on the base of dynamical properties.

 

Unusual configurations of colloidal particles: clusters, voids, thin lines of particles, uncompleted bubbles, etc. New

aspects of the van der Waals interaction mediated by electromagnetic and hydrodynamic fluctuations

 

Selected publications:

 

``Non-equilibrium excitations in superconductors in high-frequency fields'',

B.Ivlev, S.Lisitsyn, and G.Eliashberg, {\it Jour.Low Temp.Phys}, {\bf10}, 449 (1973)

 

``Electric currents and resistive states in thin superconductors'',

B.Ivlev and N.Kopnin, {\it Adv.in Physics}, {\bf33}, 80 (1984)

 

``Stimulation of tunneling by a high-frequency field: Decay of zero-voltage states in Josephson junctions'',

B.Ivlev and V.Melnikov, {\it Phys.Rev.Lett.}, {\bf55}, 1614 (1985)

 

``Tunneling and activation motion of a string across a potential barrier'',

B.Ivlev and V.Melnikov, {\it Phys.Rev.B}, {\bf36}, 6889 (1987)

 

``Quantum statistical mechanics of vortices in high temperature superconductors'',

G.Blatter and B.Ivlev, {\it Phys.Rev.B}, {\bf50}, 10272 (1994)

 

``Vortex instability and the normal state at low temperatures'',

M.Kunchur, B.Ivlev, D.Christen, and J.Phillips, {\it Phys.Rev.Lett.}(2000)

 

``Fluctuation interaction of particles in a fluid'',

B.Ivlev, {\it Los Alamos Preprint}, arXiv:cond-mat/0004221 (2000)

 

``Control of tunneling by adapted signals'',

B.Ivlev, {\it Los Alamos Preprint}, arXiv:quant-ph/0005016 (2000)