NMR study of magnetic excitations and pseudogap in HgBa2Ca3Cu4Oy

Y. Tokunaga, K. Ishida, K. Magishi, S. Ohsugi, Guo-Qing Zheng, Y. Kitaoka, K. Asayama, A. Iyo, K. Tokiwa, H. Ihara

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We report systematic Cu-NMR study on HgBa2Ca3Cu4O10+y with Tc = 123K comprising respective 4-fold and 5-fold two CuO2 planes surrounded by square and pyramidal oxygens. Possible structure and temperature dependence of the normal-state pseudogap have been extracted from the steep decrease of the spin contribution in the Knight shift, Ks below TK* ∼ 220 K. By assuming the linear increase of a size of pseudogap between TK* and Tc with the dx2-y2 symmetry, the T-dependence of Ks/Kn in both 4- and 5-fold is reproduced below TK*.

Original languageEnglish
Pages (from-to)571-572
Number of pages2
JournalPhysica B: Condensed Matter
Volume259-261
Publication statusPublished - 1999
Externally publishedYes

Fingerprint

Nuclear magnetic resonance
Oxygen
nuclear magnetic resonance
excitation
Temperature
temperature dependence
symmetry
oxygen

Keywords

  • High-T superconductor
  • NMR
  • Pseudogap

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Tokunaga, Y., Ishida, K., Magishi, K., Ohsugi, S., Zheng, G-Q., Kitaoka, Y., ... Ihara, H. (1999). NMR study of magnetic excitations and pseudogap in HgBa2Ca3Cu4Oy. Physica B: Condensed Matter, 259-261, 571-572.

NMR study of magnetic excitations and pseudogap in HgBa2Ca3Cu4Oy. / Tokunaga, Y.; Ishida, K.; Magishi, K.; Ohsugi, S.; Zheng, Guo-Qing; Kitaoka, Y.; Asayama, K.; Iyo, A.; Tokiwa, K.; Ihara, H.

In: Physica B: Condensed Matter, Vol. 259-261, 1999, p. 571-572.

Research output: Contribution to journalArticle

Tokunaga, Y, Ishida, K, Magishi, K, Ohsugi, S, Zheng, G-Q, Kitaoka, Y, Asayama, K, Iyo, A, Tokiwa, K & Ihara, H 1999, 'NMR study of magnetic excitations and pseudogap in HgBa2Ca3Cu4Oy', Physica B: Condensed Matter, vol. 259-261, pp. 571-572.
Tokunaga Y, Ishida K, Magishi K, Ohsugi S, Zheng G-Q, Kitaoka Y et al. NMR study of magnetic excitations and pseudogap in HgBa2Ca3Cu4Oy. Physica B: Condensed Matter. 1999;259-261:571-572.
Tokunaga, Y. ; Ishida, K. ; Magishi, K. ; Ohsugi, S. ; Zheng, Guo-Qing ; Kitaoka, Y. ; Asayama, K. ; Iyo, A. ; Tokiwa, K. ; Ihara, H. / NMR study of magnetic excitations and pseudogap in HgBa2Ca3Cu4Oy. In: Physica B: Condensed Matter. 1999 ; Vol. 259-261. pp. 571-572.
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AU - Ishida, K.

AU - Magishi, K.

AU - Ohsugi, S.

AU - Zheng, Guo-Qing

AU - Kitaoka, Y.

AU - Asayama, K.

AU - Iyo, A.

AU - Tokiwa, K.

AU - Ihara, H.

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