Magnetoresistance of Silver Telluride and Silver Selenide Thin Films

Presentation Type

Poster/Portfolio

Presenter Major(s)

Physics

Mentor Information

Harold Schnyders

Department

Physics

Location

Henry Hall Atrium 44

Start Date

10-4-2013 2:00 PM

End Date

10-4-2013 3:00 PM

Keywords

Physical Science

Abstract

Previous studies have found that Ag2Te and Ag2Se thin films possess a large positive magnetoresistance. Our preliminary research with these materials suggests that the surface state effects are significant even in bulk and poly crystal forms at room temperature. If this is the case, Ag2Te and Ag2Se would be practical materials for commercial applications, particularly thermoelectrics. Therefore, our first goal in researching Ag2Te and Ag2Se is to minimize the bulk contributions by reducing the dimensions: we will create thin films on silicon dioxide crystals. Our second goal is to investigate the ability to develop and maintain a tunable Fermi level through modifying the electrochemistry by gating the thin films on silicon. This research will further the understanding of this material and its potential commercial uses.

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Apr 10th, 2:00 PM Apr 10th, 3:00 PM

Magnetoresistance of Silver Telluride and Silver Selenide Thin Films

Henry Hall Atrium 44

Previous studies have found that Ag2Te and Ag2Se thin films possess a large positive magnetoresistance. Our preliminary research with these materials suggests that the surface state effects are significant even in bulk and poly crystal forms at room temperature. If this is the case, Ag2Te and Ag2Se would be practical materials for commercial applications, particularly thermoelectrics. Therefore, our first goal in researching Ag2Te and Ag2Se is to minimize the bulk contributions by reducing the dimensions: we will create thin films on silicon dioxide crystals. Our second goal is to investigate the ability to develop and maintain a tunable Fermi level through modifying the electrochemistry by gating the thin films on silicon. This research will further the understanding of this material and its potential commercial uses.