Razzoli, Elia Matt, Christian E. Sassa, Y. Månsson, M. Tjernberg, O. Drachuck, G. Monomo, M. Oda, M. Kurosawa, T. Huang, Y. Plumb, N. C. Radovic, M. Keren, Amit Patthey, Luc Mesot, Joël Shi, Ming 2017-06-07 Using angle-resolved photoemission spectroscopy it is revealed that in the vicinity of optimal doping the electronic structure of La2−xSrxCuO4 cuprate undergoes an electronic reconstruction associated with a wave vector qa=(π,0). The reconstructed Fermi surface and folded band are distinct to the shadow bands observed in BSCCO cuprates and in underdoped La2−xSrxCuO4 with x≤0.12, which shift the primary band along the zone diagonal direction. Furthermore, the folded bands appear only with qa=(π,0) vector, but not with qb=(0,π). We demonstrate that the absence of qb reconstruction is not due to the matrix-element effects in the photoemission process, which indicates the fourfold symmetry is broken in the system. application/pdf https://folia.unifr.ch/global/documents/306114 https://folia.unifr.ch/documents/306114/files/raz_rsb.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.95.224504 info:eu-repo/semantics/openAccess License undefined Physical Review B. - 2017, vol. 95, no. 22, p. 224504 info:eu-repo/classification/udc/53 Rotation symmetry breaking in ${\mathrm{La}}_{2-x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}$ revealed by angle-resolved photoemission spectroscopy http://purl.org/coar/resource_type/c_6501