TY - JOUR EP - 456 SN - 1521-3951 N2 - We report high-resolution measurements of the in-plane thermal expansion anisotropy in the vicinity of the electronic nematic phase in Sr3Ru2O7 down to very low temperatures and in varying magnetic field orientation. For fields applied along the c-direction, a clear second-order phase transition is found at the nematic phase, with critical behavior compatible with the two-dimensional Ising universality class (although this is not fully conclusive). Measurements in a slightly tilted magnetic field reveal a broken fourfold in-plane rotational symmetry, not only within the nematic phase, but extending towards slightly larger fields. We also analyze the universal scaling behavior expected for a metamagnetic quantum critical point, which is realized outside the nematic region. The contours of the magnetostriction suggest a relation between quantum criticality and the nematic phase. VL - 250 IS - 3 TI - Electronic nematicity and its relation to quantum criticality in Sr3Ru2O7 studied by thermal expansion N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. Y1 - 2013/03/01/ AV - public UR - https://doi.org/10.1002/pssb.201200905 A1 - Stingl, C A1 - Perry, RS A1 - Maeno, Y A1 - Gegenwart, P JF - Physica Status Solidi B - Basic Solid State Physics PB - WILEY-V C H VERLAG GMBH ID - discovery10134050 SP - 450 ER -