Softening of magnetic excitations leading to pressure-induced quantum phase transition in gapped spin system KCuCl $_{3}$

Goto, Kenji*; Osakabe, Toyotaka ; Kakurai, Kazuhisa; Uwatoko, Yoshiya*; Osawa, Akira*; Kawakami, Jun*; Tanaka, Hidekazu*

The neutron scattering investigation on magnetic excitations in KCuCl $_{3}$ under applied pressure was performed. The softening of the excitation mode at a hydrostatic pressure of 4.7kbar was clearly observed. From the analysis of the dispersion relations, it was found that the intradimer interaction decreases under hydrostatic pressure, while most of the interdimer interactions increase.

Language	:	English
Journal	:	Journal of the Physical Society of Japan
Volume	:	76
Number	:	5
Pages	:	p.053704_1 - 053704_4
Publication Year/Month	:	2007/05
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Paper URL	:	https://doi.org/10.1143/JPSJ.76.053704
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	:	東京大学; 東京工業大学; 上智大学

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InCites™	:	Percentile:57.82 Category:Physics, Multidisciplinary
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Registration No. : AA20070253
JAEA Abstracts No. : 35001480
Paper Submission No. : 3066

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