Serch for a quantum phase transition in the geometrically frustrated quantum magnet via high pressure magnetization measurements
| Project/Area Number |
26800181
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
Kurita Nobuyuki 東京工業大学, 大学院理工学研究科, 助教 (80566737)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 幾何学的フラストレーション / 高圧力 / 圧力誘起量子相転移 / 磁化測定 / 量子相転移 / 量子磁性体 |
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| Outline of Final Research Achievements |
The purpose of this study is to find a quantum phase transitin triggered by application of pressure in the geometrically frustrated quantum magnet. We have constructed a magnetic phase diagram of the S=1 triangular-lattice antiferromagnet CsFeCl3 with gapped ground state, via high-pressure magnetization measurements up to 1.5 GPa. It is found that at the critical pressure of ~0.9 GPa, CsFeCl3 exhibits a pressure-induced quantum phase transition from a nonmagnetic gapped ground state to a mangeically ordered state. In additon, we performed the low-temperature magnetization measurement of CsFeCl3 down to 0.5 K and revealed that a field-induced magnetic phase transition at ambient pressure can be underestood in the context of the Bose-Einstein condensation of magnon quasiparticles.
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Report
(3 results)
Research Products
(30 results)
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[Journal Article] Spinon, soliton and breather in the spin-1/2 antiferromagnetic chain KCuGaF62015
Author(s)
I. Umegaki, H. Tanaka, N. Kurita, T. Ono, M. Laver, C. Niedermayer, C. Rüegg, S. Ohira-Kawamura, K. Nakajima, K. Kakurai
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Journal Title
Physical Review B
Volume: 92
Issue: 17
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Bose-Einstein Condensation vs. Crystallization of Magnons in Dimer Magnets Ba_2MSi_2O_6Cl_2 (M=Co, Cu)2015
Author(s)
M. Okada, N. Kurita, H. Tanaka, K. Johmoto, K. Fujii, H. Uekusa, A. Matuo, K. Kindo, M. Tokunaga, H. Nojiri, M. Nakamura, S. Nishimoto
Organizer
20th International Conference on Magnetism
Place of Presentation
Barcelona, Spain
Year and Date
2015-07-05 – 2015-07-10
Related Report
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[Presentation] Bose-Einstein condensation vs. crystallization of magnons in dimer magnets Ba2MSi2O6Cl2( M=Co, Cu)2015
Author(s)
M. Okada, N. Kurita, H. Tanaka, K. Johmoto, K. Fujii, H. Uekusa, A. Matsuo, K. Kindo, M. Tokunaga, H. Nojiri, M. Nakamura, and S. Nishimoto
Organizer
20th International Conference on Magnetism
Place of Presentation
Barcelona, Spain
Year and Date
2015-07-05
Related Report
Int'l Joint Research
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