Controlling Spin Density Wave Phases in Thin Cr(110) Films
نویسندگان
چکیده
Using angle-resolved photoemission, we have mapped the spin density wave phase diagram of Cr(110) thin films grown on W(110) as a function of film thickness, temperature, and hydrogen surface coverage. We find commensurate and incommensurate phases that are separated by nearly continuous transitions. Surface localized electron states play a key role in the observed thin film phase behaviors. Our results indicate a delicate balance between spin density wave stabilization energy and surface and interface energetics that can be used to control the competition between commens urate and incommensurate phases.
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