Study on the photo-induced oxygen reordering in YBa2Cu3O6+

Milić, M.; Lazarov, N.Dj.; Cucić, D.A.

doi:10.1016/j.nimb.2011.10.035

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…The lesser-known increases of Tc and other photo-conductivity effects in cuprates, that have been reported for a steady, continuous illumination with light, may point in a similar direction, though. [41][42][43][44][45][46][47][48]. The YBa2Cu3O7-d shows an increase in the critical temperature of up to 15 K in the underdoped region [42], which has also sometimes been interpreted a result of an oxygen rearrangement at the corresponding copper-oxygen chain sites [43][44][45].…”

Section: C) "Underdoped" Sidementioning

confidence: 99%

“…[41][42][43][44][45][46][47][48]. The YBa2Cu3O7-d shows an increase in the critical temperature of up to 15 K in the underdoped region [42], which has also sometimes been interpreted a result of an oxygen rearrangement at the corresponding copper-oxygen chain sites [43][44][45]. However, enhancements of the critical temperature under continuous light illumination have also been observed in other cuprates that do not contain such chains [46,47].…”

Section: C) "Underdoped" Sidementioning

confidence: 99%

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Taking a step back and looking at the “superconducting dome” from a distance

Schilling

2023

Physica C: Superconductivity and its Applications

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Section: C) "Underdoped" Sidementioning

confidence: 99%

Section: C) "Underdoped" Sidementioning

confidence: 99%

Taking a step back and looking at the “superconducting dome” from a distance

Schilling

2023

Physica C: Superconductivity and its Applications

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“…Therefore, the ordering of oxygen in the CuO x layers plays a major role for conductivity as well as for superconductivity in YBCO. A longer average chain length leads to a higher charge carrier density in the CuO 2 planes and to a higher T c 12 on the underdoped side of the phase diagram.…”

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confidence: 99%

Controlling the near-surface superfluid density in underdoped YBa2Cu3O6+x by photo-illumination

Stilp

Suter

Prokscha

et al. 2014

Sci Rep

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The interaction with light weakens the superconducting ground state in classical superconductors. The situation in cuprate superconductors is more complicated: illumination increases the charge carrier density, a photo-induced effect that persists below room temperature. Furthermore, systematic investigations in underdoped YBa2Cu3O6+x (YBCO) have shown an enhanced critical temperature Tc. Until now, studies of photo-persistent conductivity (PPC) have been limited to investigations of structural and transport properties, as well as the onset of superconductivity. Here we show how changes in the magnetic screening profile of YBCO in the Meissner state due to PPC can be determined on a nanometer scale utilizing low-energy muons. The data obtained reveal a strongly increased superfluid density within the first few tens of nanometers from the sample surface. Our findings suggest a non-trivial modification of the near-surface band structure and give direct evidence that the superfluid density of YBCO can be controlled by light illumination.

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