نتایج جستجو برای: transition metal dichalcogenides

تعداد نتایج: 436925  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Robert Hovden Adam W Tsen Pengzi Liu Benjamin H Savitzky Ismail El Baggari Yu Liu Wenjian Lu Yuping Sun Philip Kim Abhay N Pasupathy Lena F Kourkoutis

Charge-density waves (CDWs) and their concomitant periodic lattice distortions (PLDs) govern the electronic properties in several layered transition-metal dichalcogenides. In particular, 1T-TaS2 undergoes a metal-to-insulator phase transition as the PLD becomes commensurate with the crystal lattice. Here we directly image PLDs of the nearly commensurate (NC) and commensurate (C) phases in thin,...

Journal: :Nature 2021

Near the boundary between ordered and disordered quantum phases, several experiments have demonstrated metallic behaviour that defies Landau Fermi paradigm1–5. In moiré heterostructures, gate-tuneable insulating phases driven by electronic correlations been recently discovered6–23. Here, we use transport measurements to characterize metal–insulator transitions (MITs) in twisted WSe2 near half f...

2015
Wei-Ting Hsu Yen-Lun Chen Chang-Hsiao Chen Pang-Shiuan Liu Tuo-Hung Hou Lain-Jong Li Wen-Hao Chang

A robust valley polarization is a key prerequisite for exploiting valley pseudospin to carry information in next-generation electronics and optoelectronics. Although monolayer transition metal dichalcogenides with inherent spin-valley coupling offer a unique platform to develop such valleytronic devices, the anticipated long-lived valley pseudospin has not been observed yet. Here we demonstrate...

2015
Ming-Hui Chiu Chendong Zhang Hung-Wei Shiu Chih-Piao Chuu Chang-Hsiao Chen Chih-Yuan S. Chang Chia-Hao Chen Mei-Yin Chou Chih-Kang Shih Lain-Jong Li

The emergence of two-dimensional electronic materials has stimulated proposals of novel electronic and photonic devices based on the heterostructures of transition metal dichalcogenides. Here we report the determination of band offsets in the heterostructures of transition metal dichalcogenides by using microbeam X-ray photoelectron spectroscopy and scanning tunnelling microscopy/spectroscopy. ...

Journal: :Journal of the Optical Society of America B 2016

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