The nuclear density of YBCO by the maximum entropy method using neutron powder data

Masaki Takata; Eiji Nishibori; Takashi Takayama; Makoto Sakata; Katsuaki Kodama; Masatoshi Sato; C. J. Howard

doi:10.1016/0921-4534(96)00082-2

The nuclear density of YBCO by the maximum entropy method using neutron powder data

Masaki Takata, Eiji Nishibori, Takashi Takayama, Makoto Sakata, Katsuaki Kodama, Masatoshi Sato, C. J. Howard

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

10 Citations (Scopus)

Abstract

In order to examine the nature of thermal motions of the YBCO superconductor, particularly in the CuO₂ and CuO planes, the nuclear density distribution was observed by the maximum entropy method (MEM) using neutron powder diffraction data measured at 15 K. The characteristic squarish deformation of the nuclear density due to anharmonic thermal motion was found even at such a low temperature for the Cu atom in the CuO₂ plane but not in the CuO plane. The obtained MEM nuclear density is consistent with the existence of strong Cu - O bonds in the CuO₂ plane and not in the CuO plane.

Original language	English
Pages (from-to)	176-179
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	263
Issue number	1-4
DOIs	https://doi.org/10.1016/0921-4534(96)00082-2
Publication status	Published - 1996 May
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(96)00082-2

Cite this

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abstract = "In order to examine the nature of thermal motions of the YBCO superconductor, particularly in the CuO2 and CuO planes, the nuclear density distribution was observed by the maximum entropy method (MEM) using neutron powder diffraction data measured at 15 K. The characteristic squarish deformation of the nuclear density due to anharmonic thermal motion was found even at such a low temperature for the Cu atom in the CuO2 plane but not in the CuO plane. The obtained MEM nuclear density is consistent with the existence of strong Cu - O bonds in the CuO2 plane and not in the CuO plane.",

author = "Masaki Takata and Eiji Nishibori and Takashi Takayama and Makoto Sakata and Katsuaki Kodama and Masatoshi Sato and Howard, {C. J.}",

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T1 - The nuclear density of YBCO by the maximum entropy method using neutron powder data

AU - Takata, Masaki

AU - Nishibori, Eiji

AU - Takayama, Takashi

AU - Sakata, Makoto

AU - Kodama, Katsuaki

AU - Sato, Masatoshi

AU - Howard, C. J.

PY - 1996/5

Y1 - 1996/5

N2 - In order to examine the nature of thermal motions of the YBCO superconductor, particularly in the CuO2 and CuO planes, the nuclear density distribution was observed by the maximum entropy method (MEM) using neutron powder diffraction data measured at 15 K. The characteristic squarish deformation of the nuclear density due to anharmonic thermal motion was found even at such a low temperature for the Cu atom in the CuO2 plane but not in the CuO plane. The obtained MEM nuclear density is consistent with the existence of strong Cu - O bonds in the CuO2 plane and not in the CuO plane.

AB - In order to examine the nature of thermal motions of the YBCO superconductor, particularly in the CuO2 and CuO planes, the nuclear density distribution was observed by the maximum entropy method (MEM) using neutron powder diffraction data measured at 15 K. The characteristic squarish deformation of the nuclear density due to anharmonic thermal motion was found even at such a low temperature for the Cu atom in the CuO2 plane but not in the CuO plane. The obtained MEM nuclear density is consistent with the existence of strong Cu - O bonds in the CuO2 plane and not in the CuO plane.

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The nuclear density of YBCO by the maximum entropy method using neutron powder data

Abstract

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