Title :
Submillimeter Wave ESR Measurement of a Finite Haldane Chain System Y2BaNi0.96Mg0.04O5
Author :
Ohta, H. ; Yoshida, M. ; Okubo, S. ; Ito, T. ; Ajiro, Y.
Author_Institution :
Kobe Univ., Kobe
Abstract :
The edge states in the finite S=1 Haldane chain are expected to have different energy structures depending on the chain length due to the interaction through the finite chain. Electron spin resonance (ESR) signals coming from the finite chains with various chain length have been observed separately in Y2BaNi0.96Mg0.04O5, which is a famous Haldane system doped with non-magnetic ions, due to the high spectral resolution of our submillimeter wave ESR. From the analysis, the information about the correlation length in the Haldane system at low temperature has been obtained directly by the experiment for the first time.
Keywords :
barium compounds; magnesium compounds; nickel compounds; paramagnetic resonance; submillimetre wave measurement; yttrium compounds; Y2BaNi0.96Mg0.04O5; chain length; edge states; electron spin resonance signals; energy structures; finite Haldane chain system; nonmagnetic ions; submillimeter wave ESR measurement; Frequency; Indium tin oxide; Material properties; Paramagnetic resonance; Spectroscopy; Stationary state; Submillimeter wave devices; Submillimeter wave measurements; Submillimeter wave technology; Temperature distribution;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0400-2
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368441
