Metallization of quasi-two-dimensional Mott insulator CaIrO3 with S = frac(1, 2) spins

K. Ohgushi; T. Yagi; H. Gotou; Y. Kiuchi; Y. Ueda

doi:10.1016/j.physb.2009.07.084

Metallization of quasi-two-dimensional Mott insulator CaIrO₃ with S = frac(1, 2) spins

K. Ohgushi, T. Yagi, H. Gotou, Y. Kiuchi, Y. Ueda

SCI - Physics

The University of Tokyo

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

9 Citations (Scopus)

Abstract

We report on three attempts to metallize a S = frac(1, 2) antiferromagnetic Mott insulator CaIrO₃ with the quasi-two-dimensional post-perovskite structure. By controlling the dimensionality and the electron filling, we can successfully drive a metal-insulator transition, while an insulating state is robust against the applied pressure. These results are compared with related experiments for the post-perovskite Mg_0.9Fe_0.1SiO₄, the layered perovskite Ca₂RuO₄, and high-T_c cuprates. The interplay between spin, charge, and orbital degrees of freedom is discussed.

Original language	English
Pages (from-to)	3261-3263
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	404
Issue number	19
DOIs	https://doi.org/10.1016/j.physb.2009.07.084
Publication status	Published - 2009 Oct 15

Keywords

CaIrO
Low dimensional system
Metal-insulator transition
Post-perovskite

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10.1016/j.physb.2009.07.084

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title = "Metallization of quasi-two-dimensional Mott insulator CaIrO3 with S = frac(1, 2) spins",

abstract = "We report on three attempts to metallize a S = frac(1, 2) antiferromagnetic Mott insulator CaIrO3 with the quasi-two-dimensional post-perovskite structure. By controlling the dimensionality and the electron filling, we can successfully drive a metal-insulator transition, while an insulating state is robust against the applied pressure. These results are compared with related experiments for the post-perovskite Mg0.9Fe0.1SiO4, the layered perovskite Ca2RuO4, and high-Tc cuprates. The interplay between spin, charge, and orbital degrees of freedom is discussed.",

keywords = "CaIrO, Low dimensional system, Metal-insulator transition, Post-perovskite",

author = "K. Ohgushi and T. Yagi and H. Gotou and Y. Kiuchi and Y. Ueda",

note = "Funding Information: We would like to thank H. Ueda and T. Yamauchi for their help in magnetization measurements at high pressure, F. Sakai for the chemical analysis, M. Isobe for his technical assistance, and Z. Hiroi, N. Miyajima and K. Niwa for enlightening discussions. This work was partly supported by Special Coordination Funds for Promoting Science and Technology Promotion of Environmental Improvement for Independence of Young Researchers from MEXT Japan. ",

year = "2009",

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doi = "10.1016/j.physb.2009.07.084",

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T1 - Metallization of quasi-two-dimensional Mott insulator CaIrO3 with S = frac(1, 2) spins

AU - Ohgushi, K.

AU - Yagi, T.

AU - Gotou, H.

AU - Kiuchi, Y.

AU - Ueda, Y.

N1 - Funding Information: We would like to thank H. Ueda and T. Yamauchi for their help in magnetization measurements at high pressure, F. Sakai for the chemical analysis, M. Isobe for his technical assistance, and Z. Hiroi, N. Miyajima and K. Niwa for enlightening discussions. This work was partly supported by Special Coordination Funds for Promoting Science and Technology Promotion of Environmental Improvement for Independence of Young Researchers from MEXT Japan.

PY - 2009/10/15

Y1 - 2009/10/15

N2 - We report on three attempts to metallize a S = frac(1, 2) antiferromagnetic Mott insulator CaIrO3 with the quasi-two-dimensional post-perovskite structure. By controlling the dimensionality and the electron filling, we can successfully drive a metal-insulator transition, while an insulating state is robust against the applied pressure. These results are compared with related experiments for the post-perovskite Mg0.9Fe0.1SiO4, the layered perovskite Ca2RuO4, and high-Tc cuprates. The interplay between spin, charge, and orbital degrees of freedom is discussed.

AB - We report on three attempts to metallize a S = frac(1, 2) antiferromagnetic Mott insulator CaIrO3 with the quasi-two-dimensional post-perovskite structure. By controlling the dimensionality and the electron filling, we can successfully drive a metal-insulator transition, while an insulating state is robust against the applied pressure. These results are compared with related experiments for the post-perovskite Mg0.9Fe0.1SiO4, the layered perovskite Ca2RuO4, and high-Tc cuprates. The interplay between spin, charge, and orbital degrees of freedom is discussed.

KW - CaIrO

KW - Low dimensional system

KW - Metal-insulator transition

KW - Post-perovskite

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SP - 3261

EP - 3263

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 19

ER -

Metallization of quasi-two-dimensional Mott insulator CaIrO₃ with S = frac(1, 2) spins

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Keywords

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