Results 261 to 270 of about 3,555,977 (303)

Raman spectroscopy of transition metal dichalcogenides

Journal of Physics: Condensed Matter, 2016
Raman spectroscopy of transition metal dichalcogenides (TMDs) is reviewed based on our recent theoretical and experimental works. First, we discuss the semi-classical and quantum mechanical description for the polarization dependence of Raman spectra of TMDs in which the optical dipole transition matrix elements as a function of laser excitation energy
R, Saito, Y, Tatsumi, S, Huang, X, Ling, M S, Dresselhaus   +4 more
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Aging of Transition Metal Dichalcogenide Monolayers

ACS Nano, 2016
Two-dimensional sheets of transition metal dichalcogenides are an emerging class of atomically thin semiconductors that are considered to be "air-stable", similar to graphene. Here we report that, contrary to current understanding, chemical vapor deposited transition metal dichalcogenide monolayers exhibit poor long-term stability in air.
Jian, Gao, Baichang, Li, Jiawei, Tan, Phil, Chow, Toh-Ming, Lu, Nikhil, Koratkar   +5 more
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Phase engineering of transition metal dichalcogenides

Chemical Society Reviews, 2015
The co-existence of 2H, 1T and 1T′ phases in monolayered TMDs.
Damien, Voiry, Aditya, Mohite, Manish, Chhowalla   +2 more
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Transition Metal Dichalcogenides

1977
Since the early 60’s a group of materials called the transition metal dichalcogenides have received a rapidly growing interest. Of the sixty compounds of this family, about two-thirds assume layer structures. These TCh2 compounds (Ch = S, Se or Te) form a structurally and chemically well-defined family.
R. M. A. Lieth, J. C. J. M. Terhell
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Flexoelectricity in Monolayer Transition Metal Dichalcogenides

The Journal of Physical Chemistry Letters, 2018
Flexoelectricity, the coupling effect of the strain gradient and charge polarization, is an important route to tune electronic properties of low-dimensional materials. Here our extensive first-principles calculations reveal that structural wrinkling and corrugation will cause significant flexoelectricity in transition metal dichalcogenide (TMD ...
Wenhao Shi, Yufeng Guo, Zhuhua Zhang, Wanlin Guo   +3 more
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Excited Biexcitons in Transition Metal Dichalcogenides

Nano Letters, 2015
The Stochastic Variational Method (SVM) is used to show that the effective mass model correctly estimates the binding energies of excitons and trions but fails to predict the experimental binding energy of the biexciton. Using high-accuracy variational calculations, it is demonstrated that the biexciton binding energy in transition metal ...
David K, Zhang, Daniel W, Kidd, Kálmán, Varga   +2 more
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Excitons in monolayer transition metal dichalcogenides

Journal of Physics: Condensed Matter, 2015
We theoretically investigate the exciton formed with two massive Dirac particles in monolayer [Formula: see text] and other transition metal dichalcogenides as well as two layers separated by a dielectric layer. In the low-energy limit, the separation of the center-of-mass and relative motions is obtained.
J, Li, Y L, Zhong, Dong, Zhang
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Selective Chemical Response of Transition Metal Dichalcogenides and Metal Dichalcogenides in Ambient Conditions

ACS Applied Materials & Interfaces, 2017
To fabricate practical devices based on semiconducting two-dimensional (2D) materials, the source, channel, and drain materials are exposed to ambient air. However, the response of layered 2D materials to air has not been fully elucidated at the molecular level. In the present report, the effects of air exposure on transition metal dichalcogenides (TMD)
Jun Hong Park, Suresh Vishwanath, Steven Wolf, Kehao Zhang, Iljo Kwak, Mary Edmonds, Michael Breeden, Xinyu Liu, Margaret Dobrowolska, Jacek Furdyna, Joshua A. Robinson, Huili Grace Xing, Andrew C. Kummel   +12 more
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Magnetic doping in transition metal dichalcogenides

Journal of Physics: Condensed Matter
Abstract Transition metal dichalcogenides (TMDCs) are materials with unique electronic properties due to their two-dimensional nature. Recently, there is a large and growing interest in synthesizing ferromagnetic TMDCs for applications in electronic devices and spintronics.
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Transition Metal Dichalcogenides and Their Intercalates

International Reviews in Physical Chemistry, 1983
Abstract The transition metal dichalcogenides form a group of layered, highly anisotropic compounds which exhibit interesting and unusual physical properties. Compounds formed from the Group Iv, Group V and Group VI transition metals and from sulphur or selenium have been the subject of a great deal of interest in the past few years because of the ...
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