geometrical frustration;
spin ice;
high pressure;
neutron diffraction;
UNIGA;
D O I:
10.1080/08957950903385005
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We performed high pressure neutron diffraction experiments in two geometrically frustrated pyrochlore magnets. The soft spin ice Tb2Sn2O7 was studied up to 4.6GPa and down to 60mK. Its ordered spin ice structure with k0=0 propagation vector partly transforms under pressure into a magnetic structure with k1=(0 0 1). The reduction of the total ordered Tb moment with respect to ambient pressure suggests that spin liquid fluctuations are also enhanced by pressure. The pressure-induced state is discussed by considering the influence of both isotropic pressure and stress. In contrast, in the true spin ice Ho2Ti2O7, no effect of pressure is observed up to 6GPa and down to 1.4K.
机构:
Univ Grenoble Alpes, IBS, F-38044 Grenoble, France
Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, FranceUniv Grenoble Alpes, IBS, F-38044 Grenoble, France
Peters, Judith
Martinez, Nicolas
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h-index: 0
机构:
Univ Grenoble Alpes, IBS, F-38044 Grenoble, France
Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, FranceUniv Grenoble Alpes, IBS, F-38044 Grenoble, France
Martinez, Nicolas
Michoud, Gregoire
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机构:
IFREMER, UMR 6197, Lab Microbiol Environm Extremes, CNRS,UBO, F-29280 Plouzane, FranceUniv Grenoble Alpes, IBS, F-38044 Grenoble, France
Michoud, Gregoire
Carlo, Anais
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机构:
Ecole Normale Super Lyon, UMR CNRS 5276, Lab Geol Lyon, F-69364 Lyon 07, FranceUniv Grenoble Alpes, IBS, F-38044 Grenoble, France
机构:
Univ Tokyo, Dept Appl Phys, Tokyo 1138656, JapanUniv Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
Ishizuka, Hiroaki
Udagawa, Masafumi
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h-index: 0
机构:
Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, GermanyUniv Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
Udagawa, Masafumi
Motome, Yukitoshi
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h-index: 0
机构:
Univ Tokyo, Dept Appl Phys, Tokyo 1138656, JapanUniv Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
机构:
Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Zhang, Xinyu
Dai, Lidong
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机构:
Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R ChinaChinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Dai, Lidong
Hu, Haiying
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机构:
Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R ChinaChinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Hu, Haiying
Hong, Meiling
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h-index: 0
机构:
Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Hong, Meiling
Li, Chuang
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机构:
Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China
Univ Chinese Acad Sci, Beijing 100049, Peoples R ChinaChinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths Int, Guiyang 550081, Guizhou, Peoples R China