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97 papers · 1 filter
Insulating Electronic States Near the Dirac Point Arising from Twisted Stacking and Curvature in 3D Nanoporous Graphene
Yoichi Tanabe, Hayato Sueyoshi, Samuel Jeong +3
Twist-stacked graphene with a twist angle of -- retains two-dimensional monolayer graphene-like Dirac states near the Dirac point. In three-dimensional…
Fundamentals of heterodyne wave mixing spectroscopy: a tutorial
Daniel Groll, Thilo Hahn, Paweł Machnikowski +3
This tutorial provides a joint theoretical and experimental overview of heterodyne wave mixing spectroscopy, focusing mainly on four-wave mixing (FWM). This powerful and versatile…
Quantitative noncontact measurement of thermal Hall angle and transverse thermal conductivity by lock-in thermography
Takumi Imamura, Takamasa Hirai, Koichi Oyanagi +4
We propose and demonstrate a quantitative noncontact measurement method for the thermal Hall effect (THE) based on magnetic-field-modulated lock-in thermography. This method enable…
Thermal conductance at the superradiant phase transition in the quantum Rabi model
Tsuyoshi Yamamoto, Yasuhiro Tokura
The quantum Rabi model exhibits a superradiant phase transition when the coupling becomes strong, even though it involves only two components: a two-level atom and a single bosonic…
Direct imprinting of arbitrary spin textures using programmable structured light in a semiconductor two-dimensional electron gas
Keito Kikuchi, Jun Ishihara, Miari Hiyama +5
Precise control of spatial spin structures, such as spin helices, is critical for advancing spintronic devices, particularly in non-volatile, low-power information storage and proc…
Exceptional points and non-Hermitian skin effects under nonlinearity of eigenvalues
Tsuneya Yoshida, Takuma Isobe, Yasuhiro Hatsugai
Band structures of metamaterials described by a nonlinear eigenvalue problem are beyond the existing topological band theory. In this paper, we analyze non-Hermitian topology under…