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A Simple Numerical Method for Evaluating Heat Dissipation from Curved Wires with Periodic Applied Heating
Gabriel R. Jaffe, Victor W. Brar, Max G. Lagally +1
In many situations, the dual-purpose heater/thermometer wires used in the three-omega method, one of the most precise and sensitive techniques for measuring the thermal conductivit…
Long Phonon Mean Free Paths Observed in Cross-plane Thermal-Conductivity Measurements of Exfoliated Hexagonal Boron Nitride
Gabriel R. Jaffe, Keenan J. Smith, Kenji Watanabe +4
Sub-micron-thick layers of hexagonal boron nitride (hBN) exhibit high in-plane thermal conductivity, useful optical properties, and serve as dielectric encapsulation layers with lo…
Three-Omega Thermal-Conductivity Measurements with Curved Heater Geometries
Gabriel R. Jaffe, Keenan J. Smith, Victor W. Brar +2
The three-omega method, a powerful technique to measure the thermal conductivity of nanometer-thick films and the interfaces between them, has historically employed straight conduc…
Ubiquitous Ideal Spin-Orbit Coupling in a Screw Dislocation in Semiconductors
Lin Hu, Huaqing Huang, Zhengfei Wang +7
We theoretically demonstrate that screw dislocation (SD), a 1D topological defect widely present in semiconductors, exhibits ubiquitously a new form of spin-orbit coupling (SOC) ef…
Observation of large multiple scattering effects in ultrafast electron diffraction on single crystal silicon
I. Gonzalez Vallejo, G. Gallé, B. Arnaud +8
We report on ultrafast electron diffraction on high quality single crystal silicon. The ultrafast dynamics of the Bragg peaks exhibits a giant photo-induced response which can only…
Electron spin coherence in Si/SiGe quantum wells
J. L. Truitt, K. A. Slinker, K. L. M. Lewis +11
The mechanisms limiting the spin coherence time of electrons are of great importance for spintronics. We present electron spin resonance (ESR) and transport measurements of six dif…