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

Author(s): Chen, Peng; Holinsworth, Brian S.; O'Neal, Kenneth R.; Brinzari, Tatiana V.; Mazumdar, Dipanjan; et al

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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. © 2014 American Physical Society.
Publication Date:	Apr-2014
Electronic Publication Date:	17-Apr-2014
Citation:	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. Physical Review B, 89 (16), 10.1103/PhysRevB.89.165120
DOI:	doi:10.1103/PhysRevB.89.165120
ISSN:	1098-0121
EISSN:	1550-235X
Pages:	89.16:165120-1 - 165120-5
Type of Material:	Journal Article
Journal/Proceeding Title:	Physical Review B
Version:	Final published version. Article is made available in OAR by the publisher's permission or policy.
Notes:	Physical Review B - Condensed Matter and Materials Physics. Volume 89, Issue 16, 17 April 2014, Article number 165120.