Two pseudogaps with different energy scales at the antinode of the high-temperature Bi2Sr2CuO6 superconductor using angle-resolved photoemission spectroscopy

K. Nakayama; T. Sato; Y. M. Xu; Z. H. Pan; P. Richard; H. Ding; H. H. Wen; K. Kudo; T. Sasaki; N. Kobayashi; T. Takahashi

doi:10.1103/PhysRevB.83.224509

Two pseudogaps with different energy scales at the antinode of the high-temperature Bi₂Sr₂CuO₆ superconductor using angle-resolved photoemission spectroscopy

K. Nakayama, T. Sato, Y. M. Xu, Z. H. Pan, P. Richard, H. Ding, H. H. Wen, K. Kudo, T. Sasaki, N. Kobayashi, T. Takahashi

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We performed high-resolution angle-resolved photoemission spectroscopy on single-layered cuprate Bi₂Sr₂CuO₆ to clarify the origin of the pseudogap. By using various photon energies, we succeeded in directly observing two different pseudogaps with two different energy scales which coexist in the antinodal region: one reflects the d_x2-y2-wave pairing strength while the other has a larger energy scale suggesting an origin distinct from superconductivity. The observed two-pseudogap behavior provides a key to fully understanding the pseudogap phenomena in cuprates.

Original language	English
Article number	224509
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.83.224509
Publication status	Published - 2011 Jun 23

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.83.224509

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Nakayama, K., Sato, T., Xu, Y. M., Pan, Z. H., Richard, P., Ding, H., Wen, H. H., Kudo, K., Sasaki, T., Kobayashi, N., & Takahashi, T. (2011). Two pseudogaps with different energy scales at the antinode of the high-temperature Bi₂Sr₂CuO₆ superconductor using angle-resolved photoemission spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 83(22), [224509]. https://doi.org/10.1103/PhysRevB.83.224509

Two pseudogaps with different energy scales at the antinode of the high-temperature Bi₂Sr₂CuO₆ superconductor using angle-resolved photoemission spectroscopy. / Nakayama, K.; Sato, T.; Xu, Y. M. et al.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 22, 224509, 23.06.2011.

Research output: Contribution to journal › Article › peer-review

Nakayama, K , Sato, T, Xu, YM, Pan, ZH, Richard, P, Ding, H, Wen, HH, Kudo, K, Sasaki, T, Kobayashi, N & Takahashi, T 2011, 'Two pseudogaps with different energy scales at the antinode of the high-temperature Bi₂Sr₂CuO₆ superconductor using angle-resolved photoemission spectroscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 83, no. 22, 224509. https://doi.org/10.1103/PhysRevB.83.224509

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abstract = "We performed high-resolution angle-resolved photoemission spectroscopy on single-layered cuprate Bi2Sr2CuO6 to clarify the origin of the pseudogap. By using various photon energies, we succeeded in directly observing two different pseudogaps with two different energy scales which coexist in the antinodal region: one reflects the dx2-y2-wave pairing strength while the other has a larger energy scale suggesting an origin distinct from superconductivity. The observed two-pseudogap behavior provides a key to fully understanding the pseudogap phenomena in cuprates.",

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AU - Nakayama, K.

AU - Sato, T.

AU - Xu, Y. M.

AU - Pan, Z. H.

AU - Richard, P.

AU - Ding, H.

AU - Wen, H. H.

AU - Kudo, K.

AU - Sasaki, T.

AU - Kobayashi, N.

AU - Takahashi, T.

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Two pseudogaps with different energy scales at the antinode of the high-temperature Bi₂Sr₂CuO₆ superconductor using angle-resolved photoemission spectroscopy

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