We study a model for low-doped cuprates where holes aggregate into oriented stripe segments which have a magnetic vortex and antivortex at the extremes. We argue that due to the interaction between segments a ferronematic state with macroscopic polarization is stabilized. This state can be characterized as a charge nematic which, due to the net polarization, breaks inversion symmetry and also exhibits an incommensurate spin modulation. Our calculation can reproduce the doping-dependent spin structure factor of lanthanum cuprates in excellent agreement with experiment and allows to rationalize experiments in which the incommensurability has an order-parameter-like temperature dependence. DOI: 10.1103/PhysRevB.87.035138
Hidden Ferronematic Order in Underdoped Cuprates / Seibold, GOTZ ULRICH; Capati, Matteo; DI CASTRO, Carlo; Grilli, Marco; J., Lorenzana. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 87:(2013), p. 035138. [10.1103/physrevb.87.035138]
Hidden Ferronematic Order in Underdoped Cuprates
SEIBOLD, GOTZ ULRICH;CAPATI, MATTEO;DI CASTRO, Carlo;GRILLI, Marco;
2013
Abstract
We study a model for low-doped cuprates where holes aggregate into oriented stripe segments which have a magnetic vortex and antivortex at the extremes. We argue that due to the interaction between segments a ferronematic state with macroscopic polarization is stabilized. This state can be characterized as a charge nematic which, due to the net polarization, breaks inversion symmetry and also exhibits an incommensurate spin modulation. Our calculation can reproduce the doping-dependent spin structure factor of lanthanum cuprates in excellent agreement with experiment and allows to rationalize experiments in which the incommensurability has an order-parameter-like temperature dependence. DOI: 10.1103/PhysRevB.87.035138I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
