We have located links that may give you full text access.
Anomalous K-Point Phonons in Noble Metal/Graphene Heterostructure Activated by Localized Surface Plasmon Resonance.
ACS Nano 2018 December 6
Metal/graphene interface has been one of the most important research topics with regard to charge screening, charge transfer, contact resistance, and solar cells. Chemical bond formation of metal/graphene can be deduced from the defect induced D-band and its second-order mode, 2D band, measured by Raman spectroscopy, as a simple and non-destructive method. However, a phonon mode located at ~ 1350 cm-1 , which is normally known as the defect-induced D-band, is intriguing for graphene deposited with noble metals (Ag, Au, and Cu). We observe anomalous K-point phonons in non-reactive noble metal/graphene heterostructure. The intensity ratio of the mid-frequency mode at ~ 1350 cm-1 over G-band (~1590 cm-1 ) exhibits non-linear but resonant behavior with the excitation laser wavelength and more importantly, the phonon frequency-laser energy dispersion is ~ 10-17 cm-1 /eV, which is much less than the conventional range. These phonon modes of graphene at non-zero phonon wave vector (q ≠ 0) around K points are activated by localized surface plasmon resonance, and not by the defects due to chemical bond formation of metal/graphene. This hypothesis is supported by density function theory (DFT) calculations for noble metals and Cr along with the measured contact resistances.
Full text links
Related Resources
Trending Papers
Interstitial Lung Disease: A Review.JAMA 2024 April 23
Review article: Recent advances in ascites and acute kidney injury management in cirrhosis.Alimentary Pharmacology & Therapeutics 2024 March 26
Executive Summary: State-of-the-Art Review: Unintended Consequences: Risk of Opportunistic Infections Associated with Long-term Glucocorticoid Therapies in Adults.Clinical Infectious Diseases 2024 April 11
Clinical practice guidelines on the management of status epilepticus in adults: A systematic review.Epilepsia 2024 April 13
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app