Tunable split-ring resonators using germanium telluride
Abstract
We demonstrate terahertz (THz) split-ring resonator (SRR) designs with incorporated germanium telluride (GeTe) thin films. GeTe is a chalcogenide that undergoes a nonvolatile phase change from the amorphous to crystalline state at approximately 200 °C, depending on the film thickness and stoichiometry. The phase change also causes a drop in the material's resistivity by six orders of magnitude. In this study, two GeTe-incorporated SRR designs were investigated. The first was an SRR made entirely out of GeTe and the second was a gold SRR structure with a GeTe film incorporated into the gap region of the split ring. These devices were characterized using THz time-domain spectroscopy and were heated in-situ to determine the change in the design operation with varying temperatures.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 06, 2016
- Source ID
- 10.1063/1.4953228
Entities
People
- C. H. Kodama
- R. A. Coutu, Jr.
Organizations
- Air Force Institute of Technology
- Air Force Office of Scientific Research