ar X iv : c on d - m at / 0 10 10 22 v 1 [ co nd - m at . s of t ] 3 J an 2 00 1 Ordered Morphologies of Confined

ar X iv : c on d - m at / 0 20 91 97 v 1 [ co nd - m at . s up r - co n ] 9 S ep 2 00 2 Oxygen Phonon Branches

ar X iv : c on d - m at / 0 10 90 27 v 1 [ co nd - m at . s tr - e l ] 3 S ep 2 00 1 The Net Spin Model

We study a set of exactly soluble spin models in one and two dimensions for any spin S. Its ground state, the excitation spectrum, quantum phase transition points, as well as dimensional crossover are determined.

ar X iv : c on d - m at / 0 50 91 26 v 1 [ co nd - m at . s of t ] 6 S ep 2 00 5 Manning condensation in two dimensions

We consider a macroion confined to a cylindrical cell and neutralized by oppositely charged counterions. Exact results are obtained for the two-dimensional version of this problem, in which ion-ion and ion-macroion interactions are logarithmic. In particular, the threshold for counterion condensation is found to be the same as predicted by mean-field theory. With further increase of the macroio...

ar X iv : 0 71 2 . 02 55 v 1 [ co nd - m at . s of t ] 3 D ec 2 00 7 Confined nanorods : jamming due to helical buckling

We investigate a longitudinally loaded elastic nanorod inside a cylindrical channel and show within the context of classical elasticity theory that the Euler buckling instability leads to a helical postbuckling form of the rod within the channel. The local pitch of the confined helix changes along the channel and so does the longitudinal force transmitted along the rod, diminishing away from th...

ar X iv : c on d - m at / 0 10 10 56 v 1 [ co nd - m at . s of t ] 5 J an 2 00 1 Pattern Competition in the

We analytically study the photorefractive Gunn effect in n-GaAs subjected to two external laser beams which form a moving interference pattern (MIP) in the semiconductor. When the intensity of the spatially independent part of the MIP, denoted by I0, is small, the system has a periodic domain train (PDT), consistent with the results of linear stability analysis. When I0 is large, the space-char...