TY - GEN AU - M. Wagenknecht, H. Eitel, T. Nachtrab, JB. Philipp, R. Gross, R. Kleiner, D. Koelle T1 - Laser microscopy of tunneling magnetoresistance in manganite grain-boundary junctions CY - PY - 2006 PB - T3 - Physical Review Letters VL - 96 UR - http://dx.doi.org/10.1103/PhysRevLett.96.047203 SN - 0031-9007