How to detect edge electron states in (TMTSF)2X and Sr2RuO4 experimentally

Abstract

We discuss a number of experiments that could detect the electron edge states in the organic quasi-one-dimensional conductors (TMTSF)2X and the inorganic quasi-two-dimensional perovskites Sr2RuO4. We consider the chiral edges states in the magnetic-field-induced spin-density-wave (FISDW) phase of (TMTSF)2X and in the time-reversal-symmetry-breaking triplet superconducting phase of Sr2RuO4, as well as the nonchiral midgap edge states in the triplet superconducting phase of $(TMTSF)2X. The most realistic experiment appears to be an observation of spontaneous magnetic flux at the edges of Sr2RuO4 by a scanning SQUID microscope.

6 pages, 5 figures. Submitted to the proceedings of ISCOM-2001 to be published in Synthetic Metals. Uses supplied elsart.cls and synmet.cls. V.2: 1 reference added