Dynamical transitions of a driven Ising interface.
We study the structure of an interface in a three-dimensional Ising system created by an external nonuniform field H(r,t) . H changes sign over a two-dimensional plane of arbitrary orientation. When the field is pulled with velocity v(e) , [i.e., H(r,t)=H(r-v(e)t) ], the interface undergoes several dynamical transitions. For low velocities it is pinned by the field profile and moves along with it, the distribution of local slopes undergoing a series of commensurate-incommensurate transitions. For large v(e) the interface depins and grows with Kardar-Parisi-Zhang exponents.
Sahai
Manish K
MK
Satyendra Nath Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake, Kolkata 700 098, India.
Sengupta
Surajit
S
D001703:Biophysics / Q000379:methods*; D003198:Computer Simulation; D008280:Magnetics; D015233:Models, Statistical; D008962:Models, Theoretical; D009010:Monte Carlo Method; D010825:Physics / Q000379:methods; D013499:Surface Properties