Coupling between the charge carriers and lattice distortions via modulation of the orbital angular momentum of the 3d holes by polarized xas spectroscopy

CDW and Similarity of the Mott Insulator-to-Metal Transition in Cuprates with the Gas-to-Liquid-Liquid Transition in Supercooled Water

“…In the Wan der Walls model the b and a constants respectively characterize the short range repulsion and the long range attraction. However the polaronic charge is an extened object with a material dependent anisotropic interaction, due to the mixing between different orbital moments [13][14][15][16][17][18][19] , which promotes the formations of polaronic stripes and a polaronic charge density wave 12-35,86, This new parameter is the directional interaction between particles and favours the formation of short range unidimensional CDW. Therefore, in order to describe the phase diagram of cuprate superconductors we include an additional term to the standard VdW scheme, analogous to that introduced for supercooled water [115] by Poole at al.…”

“…In the Wan der Walls model the b and a constants respectively characterize the short range repulsion and the long range attraction. However the polaronic charge is an extened object with a material dependent anisotropic interaction, due to the mixing between different orbital moments [13][14][15][16][17][18][19] , which promotes the formations of polaronic stripes and a polaronic charge density wave 12-35,86, at doping δ=1/8 smaller than the density of the homogeneous Fermi liquid forming at δ=2/8.…”

Multiple Electronic Components and Lifshitz Transitions by Oxygen Wires Formation in Layered Cuprates and Nickelates

“…The popular theoretical paradigms assuming a rigid tetragonal structure for the CuO 2 plane and a single electronic component model have been abandoned. The multiband complexity arising from the competition between the effects of multiple orbitals in dopant induced 3d 9 L(a 1 ) and 3d 9 L(b 1 ) electronic states in the Mott Hubbard charge transfer gap [5,6], misfit strain [7,8], incommensurate lattice modulations [9], spin density waves, charge density waves [10], and dopants nanoscale organization [10,11] need to be clarified to understand the quantum complex matter scenario scenario made of multiple interacting complex networks [12,13].…”

Electronic Structure of HgBa2CuO4+δ with Self-organized Interstitial Oxygen Wires in the Hg Spacer Planes

“…In Bi 2 Sr 2 CaCu 2 O 8+y (Bi2212) the misfit strain induces a relevant corrugation of the CuO 2 planes observed by Cu K-edge Resonant Elastic X-ray Scattering (REXS) [5] accompanied by the superconducting gap modulation [6,7]. The formation of stripes in cuprates has been first observed using synchrotron radiation x-ray spectroscopy which probes the local structure in Bi 2 Sr 2 Ca 1−x Y x Cu 2 O 8+y [8][9][10][11] due to cooperative effects of misfit strain and CDW formation with wave-vector depending on doping [12,13]. The investigation of the variation of the critical temperature in complex defective transition metal oxides as a function of interstitials organization has provided evidence for defects and interstitials organization in N a x CoO 2 +yD 2 O (x=1/3; y=4x) [14] and in Sr 3 Co 2 O x (5.64 < x < 6.60) [15].…”