Incommensurate Spin Dynamics of Underdoped Superconductor YBa2Cu3O6.7

M. Arai; T. Nishijima; Y. Endoh; T. Egami; S. Tajima; K. Tomimoto; Y. Shiohara; M. Takahashi; A. Garrett; S. M. Bennington

doi:10.1103/PhysRevLett.83.608

Incommensurate Spin Dynamics of Underdoped Superconductor YBa2Cu3O6.7

M. Arai, T. Nishijima, Y. Endoh, T. Egami, S. Tajima, K. Tomimoto, Y. Shiohara, M. Takahashi, A. Garrett, S. M. Bennington

DOI 10.1103/PhysRevLett.83.608 · Physical Review Letters

T1

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Abstract

The spin dynamics of the underdoped superconductor YBa2Cu3O6.7 ( Tc∼67K) was revealed to have an incommensurate wave vector dependence with “pillars” in the dispersion relation at the positions ( 12±d,12,0) and ( 12,12±d,0). This is the same symmetry as that found in La2−xSrxCuO4. The value of the incommensurability, d=0.11±0.01r.l.u∼18, is very close to the value expected from the hole concentration. These results have demonstrated that the spin dynamics do not depend on the details of Fermi surface but have an analogous form to that for the proposed stripe domain structure.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6.7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	67	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-x-yNdySrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown