Non-one-dimensional behavior in charge-ordered structurally quasi-one-dimensional Sr6Co5O15

A. S. Botana; P. M. Botta; C. De La Calle; A. Piñeiro; V. Pardo; D. Baldomir; J. A. Alonso

doi:10.1103/PhysRevB.83.184420

Non-one-dimensional behavior in charge-ordered structurally quasi-one-dimensional Sr₆Co₅O₁₅

A. S. Botana, P. M. Botta, C. De La Calle, A. Piñeiro, V. Pardo, D. Baldomir, J. A. Alonso

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

50 Scopus citations

Abstract

We have synthesized Sr₆Co₅O₁₅, a quasi-one-dimensional oxide, measured its magnetic properties, and calculated its electronic structure by ab initio techniques. We have found strong evidence for its electronic and magnetic behavior not to follow the trend of its structural series. The magnetic coupling inside the CoO₃ chains is not purely ferromagnetic, and the long-range coupling inside the chains is very weak. The Co moments are slightly canted due to their large orbital angular momenta being oriented along each particular quantization axis, which is different for each Co4⁺ atom in the structure. Our thermopower calculations are in agreement with the experiment, supporting our model of the magnetic ground state of the compound.

Original language	English (US)
Article number	184420
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.83.184420
State	Published - May 19 2011
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.83.184420

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title = "Non-one-dimensional behavior in charge-ordered structurally quasi-one-dimensional Sr6Co5O15",

abstract = "We have synthesized Sr6Co5O15, a quasi-one-dimensional oxide, measured its magnetic properties, and calculated its electronic structure by ab initio techniques. We have found strong evidence for its electronic and magnetic behavior not to follow the trend of its structural series. The magnetic coupling inside the CoO3 chains is not purely ferromagnetic, and the long-range coupling inside the chains is very weak. The Co moments are slightly canted due to their large orbital angular momenta being oriented along each particular quantization axis, which is different for each Co4+ atom in the structure. Our thermopower calculations are in agreement with the experiment, supporting our model of the magnetic ground state of the compound.",

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AU - Botana, A. S.

AU - Botta, P. M.

AU - De La Calle, C.

AU - Piñeiro, A.

AU - Pardo, V.

AU - Baldomir, D.

AU - Alonso, J. A.

PY - 2011/5/19

Y1 - 2011/5/19

N2 - We have synthesized Sr6Co5O15, a quasi-one-dimensional oxide, measured its magnetic properties, and calculated its electronic structure by ab initio techniques. We have found strong evidence for its electronic and magnetic behavior not to follow the trend of its structural series. The magnetic coupling inside the CoO3 chains is not purely ferromagnetic, and the long-range coupling inside the chains is very weak. The Co moments are slightly canted due to their large orbital angular momenta being oriented along each particular quantization axis, which is different for each Co4+ atom in the structure. Our thermopower calculations are in agreement with the experiment, supporting our model of the magnetic ground state of the compound.

AB - We have synthesized Sr6Co5O15, a quasi-one-dimensional oxide, measured its magnetic properties, and calculated its electronic structure by ab initio techniques. We have found strong evidence for its electronic and magnetic behavior not to follow the trend of its structural series. The magnetic coupling inside the CoO3 chains is not purely ferromagnetic, and the long-range coupling inside the chains is very weak. The Co moments are slightly canted due to their large orbital angular momenta being oriented along each particular quantization axis, which is different for each Co4+ atom in the structure. Our thermopower calculations are in agreement with the experiment, supporting our model of the magnetic ground state of the compound.

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Non-one-dimensional behavior in charge-ordered structurally quasi-one-dimensional Sr₆Co₅O₁₅

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