Observation of the pseudogap in the heavily overdoped high-temperature superconductor La1.71Sr0.25HO0.04CuO 4

P. S. Häfliger; A. Podlesnyak; K. Conder; E. Pomjakushina; A. Furrer

doi:10.1209/epl/i2004-10199-0

Observation of the pseudogap in the heavily overdoped high-temperature superconductor La_1.71Sr_0.25HO_0.04CuO ₄

P. S. Häfliger, A. Podlesnyak, K. Conder, E. Pomjakushina, A. Furrer

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Abstract

We studied the relaxation behavior of crystal-field transitions in the heavily overdoped high-temperature superconductor La_1.71Sr _0.25HO_0.04CuO₄ (T_C ≈ 10K) by neutron spectroscopic experiments. There is clear evidence for the opening of the pseudogap at T* = (46.5 ± 0.5) K and T* = (48.4 ± 1.4) K for the ¹⁶O and ¹⁸O compound, respectively. The fact that the pseudogap phenomenon extends far into the overdoped region supports the theoretical view of the existence of preformed pairs at T* > T_C.

Original language	English
Pages (from-to)	1018-1023
Number of pages	6
Journal	EPL
Volume	67
Issue number	6
DOIs	https://doi.org/10.1209/epl/i2004-10199-0
State	Published - Sep 15 2004
Externally published	Yes

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title = "Observation of the pseudogap in the heavily overdoped high-temperature superconductor La1.71Sr0.25HO0.04CuO 4",

abstract = "We studied the relaxation behavior of crystal-field transitions in the heavily overdoped high-temperature superconductor La1.71Sr 0.25HO0.04CuO4 (TC ≈ 10K) by neutron spectroscopic experiments. There is clear evidence for the opening of the pseudogap at T* = (46.5 ± 0.5) K and T* = (48.4 ± 1.4) K for the 16O and 18O compound, respectively. The fact that the pseudogap phenomenon extends far into the overdoped region supports the theoretical view of the existence of preformed pairs at T* > TC.",

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T1 - Observation of the pseudogap in the heavily overdoped high-temperature superconductor La1.71Sr0.25HO0.04CuO 4

AU - Häfliger, P. S.

AU - Podlesnyak, A.

AU - Conder, K.

AU - Pomjakushina, E.

AU - Furrer, A.

PY - 2004/9/15

Y1 - 2004/9/15

N2 - We studied the relaxation behavior of crystal-field transitions in the heavily overdoped high-temperature superconductor La1.71Sr 0.25HO0.04CuO4 (TC ≈ 10K) by neutron spectroscopic experiments. There is clear evidence for the opening of the pseudogap at T* = (46.5 ± 0.5) K and T* = (48.4 ± 1.4) K for the 16O and 18O compound, respectively. The fact that the pseudogap phenomenon extends far into the overdoped region supports the theoretical view of the existence of preformed pairs at T* > TC.

AB - We studied the relaxation behavior of crystal-field transitions in the heavily overdoped high-temperature superconductor La1.71Sr 0.25HO0.04CuO4 (TC ≈ 10K) by neutron spectroscopic experiments. There is clear evidence for the opening of the pseudogap at T* = (46.5 ± 0.5) K and T* = (48.4 ± 1.4) K for the 16O and 18O compound, respectively. The fact that the pseudogap phenomenon extends far into the overdoped region supports the theoretical view of the existence of preformed pairs at T* > TC.

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ER -

Observation of the pseudogap in the heavily overdoped high-temperature superconductor La_1.71Sr_0.25HO_0.04CuO ₄

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