Richard D. Averitt
University of California, San Diego
401 Papers
5.1K Citations
Richard D. Averitt is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Terahertz radiation & Metamaterial. The author has an hindex of 67, co-authored 384 publications. Previous affiliations of Richard D. Averitt include Boston University & Rice University.
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Papers
Picosecond dynamics of the spin-lattice relaxation in La 0.7 Ca 0.2 MnO 3 : Magnetic-field dependence
TL;DR: In this article, the authors employed ultrafast optical pump-probe measurements at 1.5 eV to study the picosecond dynamics of the magnetic-field-induced metal-insulator (MI) transition in thin thin films in fields up to 7 T.
Quasiparticle relaxation across the spin-density-wave gap in the itinerant antiferromagnet U Ni Ga 5
Elbert E. M. Chia,Jian-Xin Zhu,H. J. Lee,Namjung Hur,N. O. Moreno,Eve Bauer,Tomasz Durakiewicz,Richard D. Averitt,J. L. Sarrao,A. J. Taylor +9 more
TL;DR: In this article, the authors measured photo-induced reflectivity for the itinerant antiferromagnet and showed that the relaxation time of the Antiferromagnetic Network exhibits a sharp increase with the opening of a spin-density-wave (SDW) gap.
Electronic control of extraordinary terahertz transmission through subwavelength metal hole arrays
Hou-Tong Chen,Hong Lu,Abul Kalam Azad,Richard D. Averitt,Arthur C. Gossard,Stuart A. Trugman,John F. O'Hara,Antoinette J. Taylor +7 more
TL;DR: This paper describes the electronic control of extraordinary terahertz transmission through subwavelength metal hole arrays fabricated on doped semiconductor substrates using a Schottky diode structure, and achieves an intensity modulation depth of 52% by changing the voltage bias between 0 and 16 volts.
Phototunable Dielectric Huygens' Metasurfaces.
TL;DR: Control of the resonant eigenmodes supported by Huygens' metasurface (HMS) absorbers through optical excitation is proposed and demonstrated and demonstrates wide tunability and versatility, not limited to the spectral range demonstrated.
Identifying the perfect absorption of metamaterial absorbers
TL;DR: In this article, a detailed analysis of the conditions that result in unity absorption in metamaterial absorbers is presented to guide the design and optimization of this important class of functional electromagnetic composites.