8 papers
Dislocation-templated antiferromagnetic domains in epitaxial NiO
Alexandra Fonseca Montenegro, Justin Michel, Fengyuan Yang +1
Controlling antiferromagnetic domains is essential for spintronics, yet deterministic manipulation remains challenging due to their lack of net magnetization. Here, we utilize scan…
Cryogenically Enhanced Laser-Induced Amorphous Phase Transitions in Crystalline Silicon
Conrad Kuz, Andy Lee, Shashu Tomar +6
Amorphization of silicon is crucial to applications in photonics, microelectronics and solar cell technologies. Ultrafast lasers have been used to generate amorphous silicon from c…
A common origin of photoplastic and electroplastic effects in ZnS
Alexandra Fonseca Montenegro, Sevim Genlik Polat, Md Mohsinur Rahman Adnan +2
Dislocation motion--the atomic-scale mechanism of crystal plasticity--governs the strength and ductility of materials. In functional materials, external stimuli beyond mechanical s…
Photoluminescence excitation spectroscopy of quantum wire-like dislocation states in ZnS
Alexander Blackston, Alexandra Fonseca Montenegro, Sevim Polat Genlik +2
Recent \textit{ab initio} calculations predict 1D dispersive electronic bands confined to the atomic scale cores of dislocations in the wide bandgap (3.84 eV) semiconductor ZnS. We…
Epitaxially-stabilized growth of wüstite FeO on 4H-SiC
Faisal Kimbugwe, Marzieh Baan, Alexandra Fonseca Montenegro +2
Iron(II) monoxide (FeO) is thermodynamically stable in the halite (wüstite) structure only at elevated temperatures in a typically non-stoichiometric, Fe-deficient, FeO fo…
Origin of the Anisotropic Beer-Lambert Law from Dichroism and Birefringence in -GaO
Md Mohsinur Rahman Adnan, Mathias Schubert, Roberto C. Myers
The anisotropic optical absorption edge of -GaO follows a modified Beer-Lambert law having two effective absorption coefficients. The absorption coefficient of linearly…