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Carbon at extreme conditions is the focus of intensive scientific inquiry due to its importance for applications in inertial confinement fusion experiments and for understanding the interior structure of carbon-rich exoplanets. The extreme…

Materials Science · Physics 2022-11-21 Ashley S. Williams , Kien Nguyen-Cong , Jonathan T. Willman , Ivan I. Oleynik

Graphite, as a well-known carbon-based solid, is a paradigmatic example of the so-called van der Waals layered materials, which display a large anisotropy in their physical properties. Here we study quantum effects in structural and elastic…

Materials Science · Physics 2021-09-16 Carlos P. Herrero , Rafael Ramirez

Graphene functionalized with catalytic transition metals offers high-performance gas sensing by coupling graphene's exceptional electronic transport properties with the metal's catalytic activity, yet the atomistic relationships connecting…

Materials Science · Physics 2025-05-29 Akram Ibrahim , Ahmed M. Hafez , Mahmooda Sultana , Can Ataca

This study deals with the understanding of hydrogen atom scattering from graphene, a process critical for exploring C-H bond formation and energy transfer during the atom surface collision. In our previous work (J.Chem.Phys \textbf{159},…

Diamond has attracted attention as a next-generation semiconductor because of its various exceptional properties such as a wide bandgap and high breakdown electric field. Diamond field effect transistors, for example, have been extensively…

Atomic-scale fabrication is an outstanding challenge and overarching goal for the nanoscience community. The practical implementation of moving and fixing atoms to a structure is non-trivial considering that one must spatially address the…

Besides graphite and diamond, the solid allotropes of carbon in sp2 and sp3 hybridization, the possible existence of a third allotrope based on the sp-carbon linear chain, the Carbyne, has stimulated researchers for a long time. The advent…

Mesoscale and Nanoscale Physics · Physics 2018-04-20 Carlo S. Casari , Alberto Milani

The current paper presents the first attempt to recreate the origin of shungite carbon at microscopic level basing on knowledge accumulated by graphene science. The main idea of our approach is that different efficacy of chemical…

Materials Science · Physics 2013-08-06 Natalia N. Rozhkova , Elena F. Sheka

New carbon forms exhibiting extraordinary physico-chemical properties can be generated from nanostructured precursors under extreme pressure. Nevertheless, synthesis of such fascinating materials is often not well understood that results,…

Quantum Graphity (QG) is a model of emergent geometry in which space is represented by a dynamical graph. The graph evolves under the action of a Hamiltonian from a high-energy pre-geometric state to a low-energy state in which geometry…

General Relativity and Quantum Cosmology · Physics 2015-10-07 Samuel A. Wilkinson , Andrew D. Greentree

Based on first-principles calculations we predict a peculiar growth process, where carbon adatoms adsorbed to graphene readily diffuse above room temperature and nucleate segments of linear carbon chains attached to graphene. These chains…

Materials Science · Physics 2011-05-03 C. Ataca , S. Ciraci

Single-layer diamond or diamane is substituted by N atoms assisting the diamond-like structure to be stabilize without any passivation. One fourth of N substitution in diamane, vertically stacking as NCCC, is found to be stable by surface…

Materials Science · Physics 2020-08-19 T. Pakornchote , A. Ektarawong , W. Busayaporn , U. Pinsook , T. Bovornratanaraks

The characteristic results by different diagnostics on a typical hydrogenated diamond like carbon (HDLC) film synthesized directly in a capacitatively coupled RF (13.56 MHz) discharge are described. The results show some typical charecteric…

Materials Science · Physics 2008-02-28 Nihar Ranjan Ray , A. K. Srivastava , Rainer Grotzschel

The electronic properties of graphene decorated with Ni, Co, Cu and Zn adatoms is studied with the density functional theory approach. Within the analysis the spin-orbit interaction is taken into account. We focus on the case when the…

Applied Physics · Physics 2019-03-01 Malgorzata Wawrzyniak-Adamczewska

Silicon undergoes a phase transition from the semiconducting diamond phase to the metallic beta-Sn phase under pressure. We use quantum Monte Carlo calculations to predict the transformation pressure and compare the results to density…

Materials Science · Physics 2014-04-23 R. G. Hennig , A. Wadehra , K. P. Driver , W. D. Parker , C. J. Umrigar , J. W. Wilkins

Graphene, a two-dimensional crystal made of carbon atoms, provides a new and unexpected bridge between low and high-energy physics. The field has evolved very fast and very good reviews are already available in the literature. Graphene…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Alberto Cortijo , Francisco Guinea , Maria A. H. Vozmediano

Traditionally, all superhard carbon phases including diamond are electric insulators and all conductive carbon phases including graphite are mechanically soft. Based on first-principles calculation results, we report a superhard but…

Materials Science · Physics 2017-01-19 Chaoyu He , Lijun Meng , Chao Tang , Jianxin Zhong

Although the BCS theory of superconductivity is a well established theory, we have shown that the phenomenology predicted by this model is much richer than previously believed. By releasing the constraint that the attraction band is…

Superconductivity · Physics 2016-11-23 Dragos-Victor Anghel

In a recent Letter, Fujii et. al. [Phys. Rev. Lett. 125, 016001] predicted a new carbon allotrope, pentadiamond, with remarkable mechanical properties: elastic moduli comparable or larger than diamond, and negative Poisson's ratio $\mu$ =…

Materials Science · Physics 2020-07-21 Santanu Saha , Wolfgang von der Linden , Lilia Boeri

Crystallization of rubrene, progressing from an amorphous phase to a triclinic meta-stable and ultimately to the orthorhombic stable phase, offers broad applications not only in organic electronic devices but also for in-depth studies of…

Materials Science · Physics 2025-05-13 Moha Naeimi , Katharina Engster , Ingo Barke , Sylvia Speller