MERON PSEUDOSPIN SOLUTIONS IN QUANTUM HALL SYSTEMS

In this paper we report calculations of some pseudospin textures for b ilayer quantum hall systems with filling factor nu = 1. The textures w e study are isolated single meron solutions. Meron solutions have alre ady been studied at seat length by others by minimising the microscopi c Hamiltonian between microscopic trial wavefunctions. Our approach is somewhat different. We calculate them by numerically solving the nonl inear integro-differential equations arising from extremisation of the effective action for pseudospin textures. Our results can be viewed a s augmenting earlier results and providing a basis for comparison. Our differential equation approach also allows us to dilineate the impact of different physical effects like the pseudospin stiffness and the c apacitance energy on the meron solution.