Development of submillimeter wave ESR measurement system under high pressure

Author

Ohta, H. ; Sakurai, T. ; Okubo, S. ; Kodama, MIturu ; Taketani, A. ; Tanaka, H. ; Uwatoko, Y.

Author_Institution

Molecular Photosci. Res. Center, Kobe Univ., Japan

fYear

2004

fDate

27 Sept.-1 Oct. 2004

Firstpage

169

Lastpage

170

Abstract

We have developed the submillimeter wave ESR measurement system under pressure up to 3.5 kbar using the transmission technique. This system has the advantages that the pulsed magnetic field up to 16 T and the wide frequency region up to 670 GHz are available. The pressure is generated by the clamped-type pressure cell whose inner parts are all made by the sapphire. We applied this system to the study of the quantum spin-gap system KCuCl₃ and obtained the direct evidence that the gap energy of this compound decreased under pressure.

Keywords

copper compounds; energy gap; measurement systems; paramagnetic resonance; potassium compounds; submillimetre wave measurement; 16 T; 3.5 kbar; 670 GHz; KCuCl₃; clamped type pressure cell; gap energy; pulsed magnetic field; quantum spin-gap system; submillimeter wave ESR measurement system; transmission technique; Frequency; Magnetic field measurement; Oscillators; Paramagnetic resonance; Physics; Pressure measurement; Submillimeter wave devices; Submillimeter wave measurements; Submillimeter wave propagation; Submillimeter wave technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on

Print_ISBN

0-7803-8490-3

Type

conf

DOI

10.1109/ICIMW.2004.1422007

Filename

1422007