102 citations · 327 across the 9 of their papers we have counts for
9 papers
Decoupled few-femtosecond phase transitions in vanadium dioxide
Christian Brahms, Lin Zhang, Xiao Shen +11
The nature of the insulator-to-metal phase transition in vanadium dioxide (VO2) is one of the longest-standing problems in condensed-matter physics. Ultrafast spectroscopy has long…
Dramatic enhancement of second and third harmonic generation in gold nanogratings in the visible and UV ranges
S. Mukhopadhyay, L. Rodriguez-Suné, C. Cojocaru +7
Notwithstanding its long history, the study of nonlinear optics from metal surfaces is still an active field of research. For instance, in view of the presence of absorption questi…
Ultrafast X-ray imaging of the light-induced phase transition in VO2
Allan S. Johnson, Daniel Pérez-Salinas, Khalid M. Siddiqui +26
Using light to control transient phases in quantum materials is an emerging route to engineer new properties and functionality, with both thermal and non-thermal phases observed ou…
Mapping nanoscale charge states and phase domains with quantitative hyperspectral coherent diffractive imaging spectroscopy
Allan S. Johnson, Jordi Valls Conesa, Luciana Vidas +7
The critical properties of functional materials and nanoscale devices often originate from the coexistence of different thermodynamic phases and / or oxidization states, but sample…
Sub-picosecond all-optical switching in a hybrid VO2:silicon waveguide at 1550 nm
Kent A. Hallman, Kevin J. Miller, Andrey Baydin +2
Achieving ultrafast all-optical switching in a silicon waveguide geometry is a key milestone on the way to an integrated platform capable of handling the increasing demands for hig…
Does VO Host a Transient Monoclinic Metallic Phase?
Luciana Vidas, Daniel Schick, Elías Martínez +8
Ultrafast phase transitions induced by femtosecond light pulses present a new opportunity for manipulating the properties of materials. Understanding how these transient states are…
Silicon waveguide modulator with embedded phase change material
Kevin J. Miller, Kent A. Hallman, Richard F. Haglund +1
Phase-change materials (PCMs) have emerged as promising active elements in silicon (Si) photonic systems. In this work, we design, fabricate, and characterize a hybrid Si-PCM optic…
Nanoscale spectroscopic imaging of phase separation in a correlated material by resonant X-ray holography
Luciana Vidas, Christian M. Günther, Timothy A. Miller +8
Nanoscale phase coexistence and inhomogeneity are ubiquitous in correlated electron materials, existing in doped Mott insulators, manganites, and high-temperature superconductors.…
Unified Band Theoretic Description of Electronic and Magnetic Properties of Vanadium Dioxide Phases
Sheng Xu, Xiao Shen, Kent A. Hallman +2
The debate about whether the insulating phases of vanadium dioxide (VO2) can be described by band theory or must be described by a theory of strong electron correlations remains un…