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Broadband Linear-Dichroic Photodetector in a Black Phosphorus Vertical p-n Junction
Hongtao Yuan, Xiaoge Liu, Farzaneh Afshinmanesh +12
The ability to detect light over a broad spectral range is central for practical optoelectronic applications, and has been successfully demonstrated with photodetectors of two-dime…
Direct spectroscopic evidence for phase competition between the pseudogap and superconductivity in BiSrCaCuO
Makoto Hashimoto, Elizabeth A. Nowadnick, Rui-Hua. He +16
In the high-temperature () cuprate superconductors, increasing evidence suggests that the pseudogap, existing below the pseudogap temperature *, has a distinct broken ele…
Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor
Miguel M. Ugeda, Aaron J. Bradley, Su-Fei Shi +9
Two-dimensional (2D) transition metal dichalcogenides (TMDs) exhibit novel electrical and optical properties and are emerging as a new platform for exploring 2D semiconductor physi…
Direct observation of bulk charge modulations in optimally-doped BiPbSrCaCuO
M. Hashimoto, G. Ghiringhelli, W. -S. Lee +12
Bulk charge density modulations, recently observed in high critical-temperature () cuprate superconductors, coexist with the so-called pseudogap and compete with supe…
Ultrafast Electron Dynamics in the Topological Insulator Bi2Se3 Studied by Time-Resolved Photoemission Spectroscopy
Jonathan A. Sobota, Shuolong Yang, Dominik Leuenberger +6
We characterize the topological insulator BiSe using time- and angle- resolved photoemission spectroscopy. By employing two-photon photoemission, a complete picture of the…
Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2
Yi Zhang, Tay-Rong Chang, Bo Zhou +13
Quantum systems in confined geometries are host to novel physical phenomena. Examples include quantum Hall systems in semiconductors and Dirac electrons in graphene. Interest in su…