2001/03/24 by A. B. Sushkov, J. L. Musfeldt, S. A. Crooker +3
Chemical Engineering · Physics and Astronomy · #Advanced Condensed Matter Physics #Catalysis and Oxidation Reactions #Physics of Superconductivity and Magnetism #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.63.220401
4 pages, 3 figures, PRB accepted
arxiv created 2001/03/24 · openalex publication_date 2001/04/26 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report polarized optical reflectance studies of \ensuremathα^\ensuremath'\ensuremath-NaV2O5 as a function of temperature (4--45 K) and magnetic field (0--60 T). Rung directed electronic structure changes, as measured by near-infrared reflectance ratios \ensuremathΔR(H)=R(H)/R(H=0 T), are especially sensitive to the phase boundaries. We employ these changes to map out an H\ensuremath-T phase diagram. Topological highlights include the observation of an additional phase boundary slightly below TSG, enhanced curvature of the 34 K phase boundary above 35 T, and, surprisingly, strong hysteresis effects of both transitions with applied field.