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6 papers · 2 filters
Antimony arsenide: Chemical ordering in the compound SbAs
Daniel P. Shoemaker, Thomas C. Chasapis, Dat Do +5
The semimetallic Group V elements display a wealth of correlated electron phenomena due to a small indirect band overlap that leads to relatively small, but equal, numbers of holes…
Fundamental Performance Limits of Carbon Nanotube Thin-Film Transistors Achieved Using Hybrid Molecular Dielectrics
Vinod K. Sangwan, Rocio Ponce Ortiz, Justice M. P. Alaboson +5
In the past decade, semiconducting carbon nanotube thin films have been recognized as contending materials for wide-ranging applications in electronics, energy, and sensing. In par…
High-frequency performance of scaled carbon nanotube array field-effect transistors
Mathias Steiner, Michael Engel, Yu-Ming Lin +10
We report the radio-frequency performance of carbon nanotube array transistors that have been realized through the aligned assembly of highly separated, semiconducting carbon nanot…
Mechanical Metamaterials with Negative Compressibility Transitions
Zachary G. Nicolaou, Adilson E. Motter
When tensioned, ordinary materials expand along the direction of the applied force. Here, we explore network concepts to design metamaterials exhibiting negative compressibility tr…
Lattice dynamics reveals a local symmetry breaking in the emergent dipole phase of PbTe
Kirsten M. Ø. Jensen, Emil S. Božin, Christos D. Malliakas +5
Local symmetry breaking in complex materials is emerging as an important contributor to materials properties but is inherently difficult to study. Here we follow up an earlier stru…
Decoherence and mode-hopping in a magnetic tunnel junction-based spin-torque oscillator
P. K. Muduli, O. G. Heinonen, J. Åkerman
We discuss the coherence of magnetic oscillations in a magnetic tunnel junction-based spin-torque oscillator as a function of external field angle. Time-frequency analysis shows mo…