ar X iv : c on d - m at / 9 60 62 12 v 2 4 J ul 1 99 6 Quantum Hall Transitions in ( TMTSF )

ar X iv : c on d - m at / 9 60 62 12 v 1 2 8 Ju n 19 96 Quantum Hall Transitions in ( TMTSF

We have studied the temperature dependence of the integer quantum Hall transitions in the molecular crystal (TMTSF)2PF6. We find that the transition width between the quantum Hall plateaus does not exhibit the universal power-law scaling behavior of the integer quantum Hall effect observed in semiconducting devices. Instead, the slope of the ρxy risers, dρxy/dB, and the (inverse) width of the ρ...

ar X iv : c on d - m at / 9 60 40 14 v 1 2 A pr 1 99 6 Quantum Hall Effect and Chaotic Motion in Phase Space

We discuss the relation between the Quantum Hall behaviour of charged carriers and their chaotic motion in phase space. It is shown that the quantum Hall diagram is comparable with the stepped diagram in phase space of a chaotic motion.

ar X iv : c on d - m at / 9 50 80 62 v 1 3 1 Ju l 1 99 5 QUANTUM THEORY OF LARGE SYSTEMS OF NON - RELATIVISTIC MATTER

ar X iv : c on d - m at / 9 60 31 90 v 1 2 9 M ar 1 99 6 The Four - Dimensional XY Spin Glass

X iv : c on d - m at / 9 60 30 50 v 1 7 M ar 1 99 6 Quench Induced Vortices in the Symmetry Broken Phase of Liquid

Motivated by the study of cosmological phase transitions, our understanding of the formation of topological defects during spontaneous symmetry-breaking and the associated non-equilibrium field theory has recently changed. Experiments have been performed in superfluid 4 He to test the new ideas involved. In particular, it has been observed that a vortex density is seen immediately after pressur...