Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu 5Oy: Cu-NMR study

H. Kotegawa, Y. Tokunaga, Y. Araki, Guo-Qing Zheng, Y. Kitaoka, K. Tokiwa, K. Ito, T. Watanabe, A. Iyo, Y. Tanaka, H. Ihara

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Abstract

We report a coexistence of superconductivity and antiferromagnetism in five-layered compound HgBa2Ca4Cu5Oy (Hg-1245) with Tc = 108 K, which is composed of two types of CuO 2 planes in a unit cell; three inner planes (IP's) and two outer planes (OP's). The Cu-NMR study has revealed that the optimally doped OP undergoes a superconducting (SC) transition at Tc = 108 K, whereas the three underdoped IP's do an antiferromagnetic (AF) transition below T N∼60 K with the Cu moments of ∼(0.3-0.4)μB. Thus bulk super-conductivity with a high value of Tc = 108 K and a static AF ordering at TN = 60 K are realized in the alternating AF and SC layers. The AF-spin polarization at the IP is found to induce the Cu moments of ∼0.02μB at the SC OP, which is the AF proximity effect into the SC OP.

Original languageEnglish
Article number014501
Pages (from-to)145011-145016
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number1
Publication statusPublished - Jan 2004
Externally publishedYes

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Antiferromagnetism
Spin polarization
antiferromagnetism
Superconductivity
Superconducting materials
superconductivity
Nuclear magnetic resonance
moments
nuclear magnetic resonance
conductivity
polarization
cells

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu 5Oy : Cu-NMR study. / Kotegawa, H.; Tokunaga, Y.; Araki, Y.; Zheng, Guo-Qing; Kitaoka, Y.; Tokiwa, K.; Ito, K.; Watanabe, T.; Iyo, A.; Tanaka, Y.; Ihara, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 69, No. 1, 014501, 01.2004, p. 145011-145016.

Research output: Contribution to journalArticle

Kotegawa, H, Tokunaga, Y, Araki, Y, Zheng, G-Q, Kitaoka, Y, Tokiwa, K, Ito, K, Watanabe, T, Iyo, A, Tanaka, Y & Ihara, H 2004, 'Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu 5Oy: Cu-NMR study', Physical Review B - Condensed Matter and Materials Physics, vol. 69, no. 1, 014501, pp. 145011-145016.
Kotegawa, H. ; Tokunaga, Y. ; Araki, Y. ; Zheng, Guo-Qing ; Kitaoka, Y. ; Tokiwa, K. ; Ito, K. ; Watanabe, T. ; Iyo, A. ; Tanaka, Y. ; Ihara, H. / Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu 5Oy : Cu-NMR study. In: Physical Review B - Condensed Matter and Materials Physics. 2004 ; Vol. 69, No. 1. pp. 145011-145016.
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T1 - Coexistence of superconductivity and antiferromagnetism in multilayered high-Tc superconductor HgBa2Ca4Cu 5Oy

T2 - Cu-NMR study

AU - Kotegawa, H.

AU - Tokunaga, Y.

AU - Araki, Y.

AU - Zheng, Guo-Qing

AU - Kitaoka, Y.

AU - Tokiwa, K.

AU - Ito, K.

AU - Watanabe, T.

AU - Iyo, A.

AU - Tanaka, Y.

AU - Ihara, H.

PY - 2004/1

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N2 - We report a coexistence of superconductivity and antiferromagnetism in five-layered compound HgBa2Ca4Cu5Oy (Hg-1245) with Tc = 108 K, which is composed of two types of CuO 2 planes in a unit cell; three inner planes (IP's) and two outer planes (OP's). The Cu-NMR study has revealed that the optimally doped OP undergoes a superconducting (SC) transition at Tc = 108 K, whereas the three underdoped IP's do an antiferromagnetic (AF) transition below T N∼60 K with the Cu moments of ∼(0.3-0.4)μB. Thus bulk super-conductivity with a high value of Tc = 108 K and a static AF ordering at TN = 60 K are realized in the alternating AF and SC layers. The AF-spin polarization at the IP is found to induce the Cu moments of ∼0.02μB at the SC OP, which is the AF proximity effect into the SC OP.

AB - We report a coexistence of superconductivity and antiferromagnetism in five-layered compound HgBa2Ca4Cu5Oy (Hg-1245) with Tc = 108 K, which is composed of two types of CuO 2 planes in a unit cell; three inner planes (IP's) and two outer planes (OP's). The Cu-NMR study has revealed that the optimally doped OP undergoes a superconducting (SC) transition at Tc = 108 K, whereas the three underdoped IP's do an antiferromagnetic (AF) transition below T N∼60 K with the Cu moments of ∼(0.3-0.4)μB. Thus bulk super-conductivity with a high value of Tc = 108 K and a static AF ordering at TN = 60 K are realized in the alternating AF and SC layers. The AF-spin polarization at the IP is found to induce the Cu moments of ∼0.02μB at the SC OP, which is the AF proximity effect into the SC OP.

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