TY - JOUR
T1 - Fluctuating charge order in the cuprates
T2 - Spatial anisotropy and feedback from superconductivity
AU - Wang, Yuxuan
AU - Chowdhury, Debanjan
AU - Chubukov, Andrey V.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/10/7
Y1 - 2015/10/7
N2 - We analyze the form of static charge susceptibility χ(q) in underdoped cuprates near axial momenta (Q,0) and (0,Q) at which short-range static charge order has been observed. We show that the momentum dependence of χ(q) is anisotropic, and the correlation length in the longitudinal direction is larger than in the transverse direction. We show that correlation lengths in both directions decrease once the system evolves into a superconductor, as a result of the competition between superconductivity and charge order. These results are in agreement with resonant x-ray scattering data [R. Comin, Science 347, 1335 (2015)SCIEAS0036-807510.1126/science.1258399]. We also argue that density and current components of the charge order parameter are affected differently by superconductivity: the charge density component is reduced less than the current component and hence extends deeper into the superconducting state. This gives rise to two distinct charge order transitions at zero temperature.
AB - We analyze the form of static charge susceptibility χ(q) in underdoped cuprates near axial momenta (Q,0) and (0,Q) at which short-range static charge order has been observed. We show that the momentum dependence of χ(q) is anisotropic, and the correlation length in the longitudinal direction is larger than in the transverse direction. We show that correlation lengths in both directions decrease once the system evolves into a superconductor, as a result of the competition between superconductivity and charge order. These results are in agreement with resonant x-ray scattering data [R. Comin, Science 347, 1335 (2015)SCIEAS0036-807510.1126/science.1258399]. We also argue that density and current components of the charge order parameter are affected differently by superconductivity: the charge density component is reduced less than the current component and hence extends deeper into the superconducting state. This gives rise to two distinct charge order transitions at zero temperature.
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U2 - 10.1103/PhysRevB.92.161103
DO - 10.1103/PhysRevB.92.161103
M3 - Article
AN - SCOPUS:84944754829
SN - 1098-0121
VL - 92
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 16
M1 - 161103
ER -