Magnetic and vibronic terahertz excitations in Zn-doped <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Mo</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>8</mml:mn></mml:msub></mml:mrow></mml:math>

Abstract

Doping with Zn makes the rich spectrum of low-energy excitations in the polar antiferromagnet Fe${}_{2}$Mo${}_{3}$O${}_{8}$ even richer and leads to a beautiful example of a broad electric-dipole active vibronic excitation band. In an applied magnetic field, the evolution of the spectra clearly reflects the emergence of a metastable ferrimagnetic polar state that could host interesting dynamic magnetoelectric phenomena.

Topics & Concepts