Magnetic-field-induced shift of the optical band gap in Ni3 V2 O8

P. Chen, B. S. Holinsworth, K. R. O'Neal, T. V. Brinzari, D. Mazumdar, Y. Q. Wang, S. McGill, R. J. Cava, B. Lorenz, J. L. Musfeldt

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Abstract

We employ a magnetic-field driven antiferromagnetic to the fully polarized state transition in Ni3V2O8 to investigate the interaction between spin ordering and driven charge excitations, with special emphasis on the color properties. Our measurements reveal field-induced blue shifts of the band gap that are much larger than that of the Zeeman effect in isolation, anticipating a more greenish appearance in the fully polarized state. This color change is verified with direct photographic images and emanates from charge density differences around the Ni and O centers in high fields.

Original languageEnglish (US)
Article number165120
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number16
DOIs
StatePublished - Apr 17 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Chen, P., Holinsworth, B. S., O'Neal, K. R., Brinzari, T. V., Mazumdar, D., Wang, Y. Q., McGill, S., Cava, R. J., Lorenz, B., & Musfeldt, J. L. (2014). Magnetic-field-induced shift of the optical band gap in Ni3 V2 O8. Physical Review B - Condensed Matter and Materials Physics, 89(16), [165120]. https://doi.org/10.1103/PhysRevB.89.165120