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Imaging the electron charge density in monolayer MoS2 at the Ångstrom scale
Joel Martis, Sandhya Susarla, Archith Rayabharam +15
Four-dimensional scanning transmission electron microscopy (4D-STEM) has recently gained widespread attention for its ability to image atomic electric fields with sub-Ångstrom spat…
Application-Driven Synthesis and Characterization of Hexagonal Boron Nitride on Metal and Carbon Nanotube Substrates
Victoria Chen, Yong Cheol Shin, Evgeny Mikheev +6
Hexagonal boron nitride (h-BN) is unique among two-dimensional materials, with a large band gap (~6 eV) and high thermal conductivity (>400 W/m/K), second only to diamond among ele…
Temperature Gated Thermal Rectifier
Jia Zhu, Kedar Hippalgaonkar, Sheng Shen +5
Heat flow control is essential for widespread applications of heating, cooling, energy conversion and utilization. Here we demonstrate the first observation of temperature-gated th…
High temperature thermoelectric response of double-doped SrTiO epitaxial films
Jayakanth Ravichandran, Wolter Siemons, Dong-wook Oh +7
SrTiO is a promising -type oxide semiconductor for thermoelectric energy conversion. Epitaxial thin films of SrTiO doped with both La and oxygen vacancies have been synt…
Understanding the nature of electronic effective mass in double-doped SrTiO
J. Ravichandran, W. Siemons, M. L. Scullin +5
We present an approach to tune the effective mass in an oxide semiconductor by a double doping mechanism. We demonstrate this in a model oxide system SrLaTiO, w…
Anomalously large measured thermoelectric power factor in SrLaTiO thin films due to SrTiO substrate reduction
Matthew L. Scullin, Choongho Yu, Mark Huijben +6
We report the observation that thermoelectric thin-films of La-doped SrTiO3 grown on SrTiO3 substrates yield anomalously high values of thermopower to give extraordinary values of…