Magnetic quantum oscillations and multiple holon pockets in the underdoped cuprate YBa2Cu3O6+y

Wei Chen; Oleg P. Sushkov; Takami Tohyama

doi:10.1103/PhysRevB.82.060511

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Magnetic quantum oscillations and multiple holon pockets in the underdoped cuprate YBa2Cu3O6+y

Wei Chen, Oleg P. Sushkov, Takami Tohyama

DOI 10.1103/PhysRevB.82.060511 · Physical Review B

T1

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Abstract

We show that lightly doped YBa2Cu3O6+y has multiple holon pockets with different areas, which lead to multiple frequencies of magnetic quantum oscillations. Using neutron-scattering data on incommensurate spin ordering we determine these areas, which yields frequencies in good agreement with experiments. Divergence of the effective mass observed in magnetic quantum oscillations indicates a quantum phase transition at the oxygen content y≈0.48. We argue that the transition is the onset of quasistatic incommensurate magnetic order predicted by theory and observed in neutron scattering.

Source-reported materials — not catalogue approval

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