From the 2 of 11 linked papers with an AI index.
11 papers
Peak-Decomposition-Free Inverse Metrology of Hyperspectral Moiré Photoluminescence
Katsunori Wakabayashi
The paper introduces a peak‑decomposition‑free inverse framework that uses descriptor maps derived from hyperspectral photoluminescence data of moiré transition‑metal dichalcogenid…
Electrical Spectroscopy of Intervalley Relaxation in WSe Transistors
Katsunori Wakabayashi
The paper demonstrates that the transconductance of multilayer WSe₂ field‑effect transistors can be used as an electrical probe of the intervalley relaxation time, revealing charac…
Hierarchical Disorder in Moiré Exciton Photoluminescence Probed by Spectral-Descriptor Correlations
Katsunori Wakabayashi
Hyperspectral photoluminescence (PL) maps of moiré transition-metal dichalcogenide heterobilayers encode rich information about the underlying disorder, but extracting it is hamper…
Graphene as a Tunable Nonradiative Bath for Moiré Excitons
Katsunori Wakabayashi
A minimal theory of nonradiative energy transfer from a two-dimensional (2D) moiré exciton to a nearby graphene layer is presented. From Fermi's golden rule the transfer rate is t…
Valley-Landscape Engineering in Bilayer WSe Gate-All-Around Transistors
Katsunori Wakabayashi, Souren Adhikary, Kazuhito Tsukagoshi
The K- valence-band splitting that governs hole transport in few-layer WSe is not a fixed material constant. It is tuned by interlayer stacking, strain, pressure, a…
Transconductance as a Probe of Valley Thermodynamics in Multilayer WSe
Katsunori Wakabayashi, Souren Adhikary, Tomoaki Kameda
Transconductance is a central figure of merit in field-effect transistors, typically governed by charge accumulation and carrier mobility. In multilayer WSe transistors, howeve…