Dimensional crossover of low-energy magnetic excitation for delafossite oxide Cu $_{1-x}$ Ag $_{x}$ CrO $_{2}$ with a spin-3/2 antiferromagnetic triangular sublattice

Okuda, Tetsuji*; Kishimoto, Taizo*; Uto, Kazuma*; Hokazono, Takahisa*; Onose, Yoshinori*; Tokura, Yoshinori*; Kajimoto, Ryoichi ; Matsuda, Masaaki

Dimensional crossover from anisotropic-3-dimensional (3D) to 2D low-energy magnetic excitations was found in delafossite oxide Cu $_{1-x}$ Ag $_{x}$ CrO $_{2}$ having a spin-3/2 antiferromagnetic (AF) triangular lattice. The crossover is evidenced by a decrease in AF transition temperature ( $T_mathrm{N}$ ), distinct 2D magnetic excitations above $T_mathrm{N}$ for Cu $_{0.85}$ Ag $_{0.15}$ CrO $_{2}$ , a disappearance of a peak of magnetic specific heat ( $C_mathrm{mag}$ ) around $T_mathrm{N}$ , and a successive change from to dependence of low- $C_mathrm{mag}$ accompanying a low- shift of magnetic entropy. These results may suggest a gradual change from AF to spin-liquid like states with an increase in .

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	78
Number	:	1
Pages	:	p.013604_1 - 013604_4
Publication Year/Month	:	2009/01
Meeting title	:
Held date	:
Location (city)	:
Location (country)	:
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1143/JPSJ.78.013604
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	JRR-3M(研究炉3)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:

Accesses	:	- Accesses
Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:75.72 Category:Physics, Multidisciplinary
Altmetrics	:

Registration No. : AA20080825
JAEA Abstracts No. : 43000054
Paper Submission No. : 15186

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.

Dimensional crossover of low-energy magnetic excitation for delafossite oxide CuAgCrO with a spin-3/2 antiferromagnetic triangular sublattice

Dimensional crossover of low-energy magnetic excitation for delafossite oxide Cu $_{1-x}$ Ag $_{x}$ CrO $_{2}$ with a spin-3/2 antiferromagnetic triangular sublattice