Current Path Properties of the Transport Anisotropy at Filling Factor 9/2

To establish the presence and orientation of the proposed striped phase in ultra-high mobility 2D electron systems at v=9/2, current path transport properties are determined by varying the separation and allignment of current and voltage contacts. Contacts alligned orthogonal to the proposed intrinsic striped phase produce voltages consistant with current spreading along the stripes; current driven along the proposed stripe direction results in voltages consistent with channeling along the stripes. 

Direct comparison is made to current spreading/channeling properties of artifically induced 1D charge modulation systems, which determines the 9/2 stripe direction.