Journal
PHYSICAL REVIEW B
Volume 87, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.054508
Keywords
-
Funding
- Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy
- U.S. DOE's Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-98CH10886]
- Grants-in-Aid for Scientific Research [22244039] Funding Source: KAKEN
Ask authors/readers for more resources
Inelastic neutron-scattering experiments have been performed on lightly doped La1.96Sr0.04CuO4, which shows diagonal incommensurate spin correlations at low temperatures. We previously reported that this crystal, with a single orthorhombic domain, exhibits the hourglass dispersion at low energies [Phys. Rev. Lett. 101, 197001 (2008)]. In this paper, we investigate in detail the energy evolution of the magnetic excitations up to 65 meV. It is found that the anisotropic excitations at low energies, dispersing only along the spin modulation direction, cross over to an isotropic, conical dispersion that resembles spin waves in the parent compound La2CuO4. The change from twofold to full symmetry on crossing the waist of the hourglass reproduces behavior first identified in studies of underdoped YBa2Cu3O6+x. We discuss the significance of these results. DOI: 10.1103/PhysRevB.87.054508
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available