Kavli Affiliate: Grace Xing | First 5 Authors: Joseph Casamento, Hyunjea Lee, Takuya Maeda, Ved Gund, Kazuki Nomoto | Summary: Epitaxial Sc$_x$Al$_{1-x}$N thin films of ~100 nm thickness grown on metal polar GaN exhibit significantly enhanced relative dielectric permittivity ($epsilon_r$) values relative to AlN. $epsilon_r$ values of ~17 to 21 for Sc contents of 17 […]
Kavli Affiliate: Frank Wise | First 5 Authors: Yi-Hao Chen, Pavel Sidorenko, Enrique Antonio-Lopez, Rodrigo Amezcua-Correa, Frank Wise | Summary: We report a study of soliton self-frequency shifting in hydrogen-filled hollow-core fiber. The combination of hydrogen and short 40-fs input pulses underlies clean and efficient generation of Raman solitons between 1080 and 1600 nm. With […]
Kavli Affiliate: Jie Shan | First 5 Authors: Joolee Son, Suhan Son, Pyeongjae Park, Maengsuk Kim, Zui Tao | Summary: Ferromagnetism in two-dimensional materials presents a promising platform for the development of ultrathin spintronic devices with advanced functionalities. Recently discovered ferromagnetic van der Waals crystals such as CrI$_{3}$, readily isolated two-dimensional crystals, are highly tunable […]
Kavli Affiliate: Frank Wise | First 5 Authors: Henry Haig, Pavel Sidorenko, Anirban Dhar, Nilotpal Choudhury, Ranjan Sen | Summary: We present a spatiotemporally mode-locked Mamyshev oscillator. A wide variety of multimode mode-locked states, with varying degrees of spatiotemporal coupling, are observed. We find that some control of the modal content of the output beam […]
Kavli Affiliate: Darrell G. Schlom | First 5 Authors: Kitae Eom, Hanjong Paik, Jinsol Seo, Neil Campbell, Evgeny Y. Tsymbal | Summary: The prospect of 2-dimensional electron gases (2DEGs) possessing high mobility at room temperature in wide-bandgap perovskite stannates is enticing for oxide electronics, particularly to realize transparent and high-electron mobility transistors. Nonetheless only a […]
Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Thow Min Cham, Saba Karimeddiny, Vishakha Gupta, Joseph A. Mittelstaedt, Daniel C. Ralph | Summary: We measure spin-orbit torque generated by exfoliated layers of the low-symmetry semi-metal ZrTe$_3$ using the spin-torque ferromagnetic resonance (ST-FMR) technique. When the ZrTe$_3$ has a thickness greater than about 10 nm, […]
Kavli Affiliate: J. C. Davis | First 5 Authors: Zengyi Du, Hui Li, Sanghyun Joo, Elizabeth P. Donoway, Jinho Lee | Summary: When Cooper pairs are formed with finite center-of-mass momentum, the defining characteristic is a spatially modulating superconducting energy gap $Delta(r)$. Recently, this concept has been generalized to the pair density wave (PDW) state […]
Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Saba Karimeddiny, Thow Min Cham, Daniel C. Ralph, Yunqiu Kelly Luo, | Summary: We adapt Sagnac interferometry for magneto-optic Kerr effect measurements of spin-orbit-torque-induced magnetic tilting in thin-film magnetic samples. The high sensitivity of Sagnac interferometry permits for the first time optical quantification of spin-orbit torque […]
Kavli Affiliate: Jin Suntivich | First 5 Authors: Oleg Yu. Gorobtsov, Yumeng Song, Kevin Fritz, Daniel Weinstock, Yifei Sun | Summary: Nanostructured proton-conducting ceramics (PCCs) have attracted considerable interest as moderate-temperature proton conductors. Structure dynamics during proton conduction, particularly at grain boundaries, are crucial for stability and proton transport in nanostructured PCCs. A common assumption […]
Kavli Affiliate: Jin Suntivich | First 5 Authors: Oleg Yu. Gorobtsov, Yumeng Song, Kevin Fritz, Daniel Weinstock, Yifei Sun | Summary: Nanostructured proton-conducting ceramics (PCCs) have attracted considerable interest as moderate-temperature proton conductors. Structure dynamics during proton conduction, particularly at grain boundaries, are crucial for stability and proton transport in nanostructured PCCs. A common assumption […]