Tetragonal to monoclinic transition in the metallic antiferromagnet (formula presented)

A. Llobet; C. Frontera

doi:10.1103/PhysRevB.60.R9889

Tetragonal to monoclinic transition in the metallic antiferromagnet (formula presented)

A. Llobet, C. Frontera

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

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Abstract

The structural changes associated with the ferromagnetic (FM)/metallic to antiferromagnetic (AFM)/insulating transition of (Formula presented) are described in detail. Based on high-resolution neutron-diffraction data, in the (Formula presented) phase Mn1 and Mn2 octahedra have the same charge and are identically deformed. The electronically induced transition to the antiferromagnetic A-type structure at (Formula presented) is the result of a stretchinglike distortion of the octahedra that (i) contracts the Mn-O2 bond perpendicular to the FM planes by deviating (Formula presented) from (Formula presented) and (ii) injects electrons into Mn-O1 and Mn-O3 bonds. The observed microscopic changes are completely different to the structural transition in the A-type (Formula presented) and are discussed in the light of the orbital polarization previously proposed. © 1999 The American Physical Society.

Original language	English
Pages (from-to)	R9889-R9892
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.60.R9889
Publication status	Published - 1 Jan 1999

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title = "Tetragonal to monoclinic transition in the metallic antiferromagnet (formula presented)",

abstract = "The structural changes associated with the ferromagnetic (FM)/metallic to antiferromagnetic (AFM)/insulating transition of (Formula presented) are described in detail. Based on high-resolution neutron-diffraction data, in the (Formula presented) phase Mn1 and Mn2 octahedra have the same charge and are identically deformed. The electronically induced transition to the antiferromagnetic A-type structure at (Formula presented) is the result of a stretchinglike distortion of the octahedra that (i) contracts the Mn-O2 bond perpendicular to the FM planes by deviating (Formula presented) from (Formula presented) and (ii) injects electrons into Mn-O1 and Mn-O3 bonds. The observed microscopic changes are completely different to the structural transition in the A-type (Formula presented) and are discussed in the light of the orbital polarization previously proposed. {\textcopyright} 1999 The American Physical Society.",

author = "A. Llobet and C. Frontera",

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doi = "10.1103/PhysRevB.60.R9889",

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T1 - Tetragonal to monoclinic transition in the metallic antiferromagnet (formula presented)

AU - Llobet, A.

AU - Frontera, C.

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N2 - The structural changes associated with the ferromagnetic (FM)/metallic to antiferromagnetic (AFM)/insulating transition of (Formula presented) are described in detail. Based on high-resolution neutron-diffraction data, in the (Formula presented) phase Mn1 and Mn2 octahedra have the same charge and are identically deformed. The electronically induced transition to the antiferromagnetic A-type structure at (Formula presented) is the result of a stretchinglike distortion of the octahedra that (i) contracts the Mn-O2 bond perpendicular to the FM planes by deviating (Formula presented) from (Formula presented) and (ii) injects electrons into Mn-O1 and Mn-O3 bonds. The observed microscopic changes are completely different to the structural transition in the A-type (Formula presented) and are discussed in the light of the orbital polarization previously proposed. © 1999 The American Physical Society.

AB - The structural changes associated with the ferromagnetic (FM)/metallic to antiferromagnetic (AFM)/insulating transition of (Formula presented) are described in detail. Based on high-resolution neutron-diffraction data, in the (Formula presented) phase Mn1 and Mn2 octahedra have the same charge and are identically deformed. The electronically induced transition to the antiferromagnetic A-type structure at (Formula presented) is the result of a stretchinglike distortion of the octahedra that (i) contracts the Mn-O2 bond perpendicular to the FM planes by deviating (Formula presented) from (Formula presented) and (ii) injects electrons into Mn-O1 and Mn-O3 bonds. The observed microscopic changes are completely different to the structural transition in the A-type (Formula presented) and are discussed in the light of the orbital polarization previously proposed. © 1999 The American Physical Society.

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DO - 10.1103/PhysRevB.60.R9889

M3 - Article

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SP - R9889-R9892

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