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NMR Exploration of Quantum States in Novel Magnetic Systems

Personnel

Project Leader(s):
Yuji Furukawa

Principal Investigators:
Yuji Furukawa

Overview

Nuclear Magnetic Resonance (NMR) is a powerful tool to investigate materials’ properties from a microscopic point of view. This NMR group developed a low temperature (down to 0.035 K) NMR facility and strengthens the Ames Laboratory’s capabilities for microscopic studies. The objectives of the proposed research are to explore and understand various intriguing phenomena originating from strong correlations between electrons (spins) in new materials. The main focus is on (1) new quantum phenomena originating from spin frustrations and spin chirality in new low‐dimensional quantum spin systems, and molecular nanomagnets, and (2) the effects of magnetism on superconductivity in recently discovered iron pnictide‐based superconductors and heavy fermion systems.

Publications

2012
Bordonali L; Furukawa Y; Kraken M; Litterst F J; Sangregorio C; Casula M F; Lascialfari A . 2012. H-1-NMR study of the spin dynamics of fine superparamagnetic nanoparticles. Physical Review B. 85:174426. abstract
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Hirano M; Yamada Y; Saito T; Nagashima R; Konishi T; Toriyama T; Ohta Y; Fukazawa H; Kohori Y; Furukawa Y; Kihou K; Lee C H; Iyo A; Eisaki H . 2012. Potential Antiferromagnetic Fluctuations in Hole-Doped Iron-Pnictide Superconductor Ba1-xKxFe2As2 Studied by As-75 Nuclear Magnetic Resonance Measurement. Journal of the Physical Society of Japan. 81:054704. abstract
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2011
Johnston D C; McQueeney R J; Lake B; Honecker A; Zhitomirsky M E; Nath R; Furukawa Y; Antropov V P; Singh Y . 2011. Magnetic exchange interactions in BaMn(2)As(2): A case study of the J(1)-J(2)-J(c) Heisenberg model. Physical Review B. 84:094445. abstract
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