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강상관계 물질 연구단
강상관계 물질 연구단
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Magnetic and electrical anisotropy with correlation and orbital effects in dimerized honeycomb ruthenate Li2RuO3

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Title
Magnetic and electrical anisotropy with correlation and orbital effects in dimerized honeycomb ruthenate Li2RuO3
Author(s)
Seokhwan Yun; Ki Hoon Lee; Se Young Park; Teck-Yee Tan; Junghwan Park; Soonmin Kang; D. I. Khomskii; Younjung Jo; Je-Geun Park
Publication Date
2019-10
Journal
PHYSICAL REVIEW B, v.100, no.16, pp.165119 -
Publisher
AMER PHYSICAL SOC
Abstract
Li2RuO3 undergoes a structural transition at a relatively high temperature of 550 K with a distinct dimerization of Ru-Ru bonds on the otherwise isotropic honeycomb lattice. It exhibits a unique herringbone dimerization pattern with an unusually large value of bond shrinkage, about similar to 0.5 angstrom. However, many questions still remain about its origin and its effect on the physical properties. In this work, using high-quality single crystals we investigated the anisotropy of resistivity (rho) and magnetic susceptibility (chi) to find a very clear anisotropy: rho(c*) > rho(b) > rho(a) and chi(b) > chi(a) > chi(c*). We also carried out density functional calculations for possible theoretical interpretations, and concluded that this anisotropic behavior is due to the correlation effects combined with the unique orbital structure and the dimerization of Ru 4d bands. ©2019 American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/6568
ISSN
2469-9950
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
70608_Magnetic and electrical anisotropy with correlation and orbital effects in dimerized honeycomb ruthenate Li 2 RuO 3.pdfDownload

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