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Hiroyuki Nojiri 1*, 2, Z. W. Ouyang 2
1 Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
2 Wuhan National High Magnetic Field Center, HUST, Wuhan, 430074, China.
*1 E-mail: nojiri@imr.tohoku.ac.jp
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Abstract: Recent results of THz Electron Spin Resonance (ESR) on nanomagnets were reviewed. This article addresses (1) investigation of exchange coupling in heterometallic nanomagnets and chemical trends, (2) spin freezing in a giant nanomagnet, where quasi-spin wave like excitation is found without a phase transition in thermodynamic limit, and (3) pulsed EPR on a spin coherent experiment. Recent development of a tabletop THz spectrometer using a mini-pulsed magnet is also described. The development of a high-frequency ESR station at the Wuhan National High Magnetic Field Center at HUST is also introduced briefly. This article demonstrates the power of THz ESR for investigations of nanomagnets.
Keywords: Terahertz electron spin resonance, Nanomagnet, High magnetic field.
Received: 2012-2-18
Published: 2012-3-31
Acknowledgments: HN acknowledges the support by Grant-in Aid for Scientific Research from MEXT, JAPAN(No. 22108504 and No. 23654111).
Cite this article:
Hiroyuki Nojiri, Z. W. Ouyang. (Invited Paper) THz Electron Spin Resonance on Nanomagnets[J]. International Journal of Terahertz Science and Technology, 2012, Vol.5, No.1: 1-10. DOI:10.11906/TST.001-010.2012.03.01
URL: http://www.tstnetwork.org/10.11906/TST.001-010.2012.03.01
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