- Nonlinear Thermopower Behaviour of N-Type Carbon Nanofibres and Their Melt Mixed Polypropylene CompositesA. J. Paleo, B. Krause, M. F. Cerqueira, E. Muñoz, P. Potschke, and A. M. Rocha, “Nonlinear Thermopower Behaviour of N-Type Carbon Nanofibres and Their Melt Mixed Polypropylene Composites”, Polymers 14, 269 (2022). https://doi.org/10.3390/polym14020269 The temperature dependent electrical conductivity σ (T) and thermopower (Seebeck coefficient) S (T) from 303.15 K (30 °C) to 373.15 K (100 °C) of an as-received commercial …
- Thermo-magneto-electric transport through a torsion dislocation in a type I Weyl SemimetalD.Bonilla, E. Muñoz, R. Soto-Garrido. «Thermo-magneto-electric transport through a torsion dislocation in a type I Weyl Semimetal». Nanomaterials 11, 2972 (2021), https://doi.org/10.3390/nano11112972. We study electronic and thermoelectric transport in a type I Weyl semimetal nanojunction, with a torsional dislocation defect, in the presence of an external magnetic field parallel to the dislocation axis. The defect …
- Effect of intersystem crossing rates and optical illumination on the polarization of nuclear spins close to nitrogen-vacancy centersH. Duarte, H. T. Dinani, V. Jacques, and J. R. Maze, Phys. Rev. B 103, 195443. Effect of intersystem crossing rates and optical illumination on the polarization of nuclear spins close to nitrogen-vacancy centers – Published 27 May 2021, https://doi.org/10.1103/PhysRevB.103.195443 Several efforts have been made to polarize the nearby nuclear environment of nitrogen-vacancy (NV) centers for …
- Probing Charge Dynamics in Diamond with an Individual Color CenterAedan Gardill, Ishita Kemeny, Matthew C. Cambria, Yanfei Li, Hossein T. Dinani, Ariel Norambuena, Jeronimo R. Maze, Vincenzo Lordi, and Shimon Kolkowitz, Nano Lett. 2021, 21, 16, 6960–6966, Publication Date:August 2, 2021, https://doi.org/10.1021/acs.nanolett.1c02250 Control over the charge states of color centers in solids is necessary to fully utilize them in quantum technologies. However, the microscopic charge …
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- State-dependent phonon-limited spin relaxation of nitrogen-vacancy centers”, PHYSICAL REVIEW RESM. C. Cambria, A. Gardill, Y. Li, A. Norambuena, J. R. Maze and S. Kolkowitz, “State-dependent phonon-limited spin relaxation of nitrogen-vacancy centers”, PHYSICAL REVIEW RESEARCH 3, 013123 (2021), https://doi.org/10.1103/PhysRevResearch.3.013123 Understanding the limits to the spin coherence of the nitrogen-vacancy (NV) center in diamond is vital to realizing the full potential of this quantum system. We show …
- Graphene coating as an effective barrier to prevent bacteria-mediated dissolution of goldC. Parra, J. Aristizabal, B. Arce, F. Montero-Silva, S. Lascano, R. Henriquez, et al, Graphene coating as an effective barrier to prevent bacteria-mediated dissolution of gold “, Metals 11, 147. https://www.mdpi.com/2075-4701/11/1/147 The interaction of biofilms with metallic surfaces produces two biologically induced degradation processes of materials: microbial induced corrosion and bioleaching. Both phenomena affect most metallic materials, …
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- Nanostructured Didymosphenia geminata-based membrane for efficient lead adsorption from aqueous solutionE. Reinoso, J. Aristizabal, B. Arce, E. Zurob, G. Dennett, R. Fuentes, V. Suescún, L. Cárdenas, T. Rodrigues da Cunha, R. Cabezas, C. García, C. Parra, Nanostructured Didymosphenia geminata-based membrane for efficient lead adsorption from aqueous solution”, . Journal of Environmental Chemical Engineering 9(4), 105269. The need for new technologies more efficient and less expensive to …
- Graphene-coated Ti-Nb-Ta-Mn foams: A promising approach towards a suitable biomaterial for bone replacement[CP2] S. Lascano, R. Chávez-Vásconez, D. Muñoz-Rojas, J. Aristizabal, B. Arce, C. Parra et al.Graphene-coated Ti-Nb-Ta-Mn foams: A promising approach towards a suitable biomaterial for bone replacement”, Journal Surface and Coatings Technology 126250 (2020). https://www.sciencedirect.com/science/article/pii/S0257897220309191#ac0005 The design of bone implants with proper biological and mechanical properties remains a challenge in medical implantology. The use of bioactive coatings has been …
- Manoharan. Emergent electronic granularity within a three-dimensional material in the proximity of a superconductor-insulator transitionC. Parra, P. Giraldo-Gallo, F. Niestemski, A. W. Contryman, M.R D. Thian, M. R. Beasley, T. H. Geballe, I. R. Fisher, H. C. Manoharan. Emergent electronic granularity within a three-dimensional material in the proximity of a superconductor-insulator transition, Proceedings of the National Academy of Sciences of the United States of America (PNAS) 118, 16 (2021) https://www.pnas.org/content/118/16/e2017810118 Spatial disorder …
- Inducing a topological transition in graphene nanoribbons superlattices by external strainE. Flores, J.D. Mella, E. Aparicio, R. I. Gonzalez, C. Parra, E. M. Bringa, and F. Munoz. «Inducing a topological transition in graphene nanoribbons superlattices by external strain.» arXiv preprint arXiv:2109.10278 (2021). https://arxiv.org/abs/2109.10278 Armchair graphene nanoribbons, when forming a superlattice, can be classified in different topological phases, with or without edge states. By means of tight-binding and classical molecular …
- Defect levels from SCAN and MBJ meta-GGA exchange-correlation potentialsRauch, F. Munoz, M.A.L. Marques, and S. Botti. «Defect levels from SCAN and MBJ meta-GGA exchange-correlation potentials.» Physical Review B 104, 064105 (2021). https://journals.aps.org/prb/abstract/10.1103/PhysRevB.104.064105 For more than a decade the HSE06 hybrid exchange-correlation functional developed by Heyd, Scuseria and Ernzerhof has provided a tool for reliable defect level calculations in density functional theory for which postprocessing …
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- First-principles study of Mn 3 adsorbed on Au (111) and Cu (111) surfacesE.E. Hernández-Vázquez, S. López-Moreno, F. Munoz, J. L. Ricardo-Chavez, and J. L. Morán-López. «First-principles study of Mn 3 adsorbed on Au (111) and Cu (111) surfaces.» RSC Advances 11, 31073 (2021). https://pubs.rsc.org/en/content/articlelanding/2021/RA/D1RA05714F A theoretical study of the Mn trimer adsorbed on the noble metal surfaces Au(111) and Cu(111) is reported. The calculations were performed using first-principles methods …
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- Understanding Topological Insulators in Real SpaceA. Martín Pendás, F. Muñoz, C. Cardenas, and J. Contreras-García. «Understanding Topological Insulators in Real Space.» Molecules 26, 2665 (2021). https://www.mdpi.com/1420-3049/26/10/2965/htm A real space understanding of the Su–Schrieffer–Heeger model of polyacetylene is introduced thanks to delocalization indices defined within the quantum theory of atoms in molecules. This approach enables to go beyond the analysis of electron localization …
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- First-principles identification of single photon emitters based on carbon clusters in hexagonal boron nitrideC. Jara, T. Rauch, S. Botti, M.A.L. Marques, A. Norambuena, R. Coto, J. E. Castellanos-Águila, J. R. Maze, and F. Munoz. «First-principles identification of single photon emitters based on carbon clusters in hexagonal boron nitride.» The Journal of Physical Chemistry A 125, 1325 (2021) https://pubs.acs.org/doi/abs/10.1021/acs.jpca.0c07339 (Also as [FM3], submitted in first report) A recent study associates carbon …
- Simulated mechanical properties of finite-size graphene nanoribbonsE. Aparicio, E. Tangarife, F. Munoz, R.I. Gonzalez, F.J. Valencia, C. Careglio, and E.M. Bringa “Simulated mechanical properties of finite-size graphene nanoribbons”. Nanotechnology, 32(4), 045709 (2021). https://iopscience.iop.org/article/10.1088/1361-6528/abc036/meta There are many simulation studies of mechanical properties of graphene nanoribbons (GNR), but there is a lack of agreement regarding elastic and plastic behavior. In this paper we aim to analyze …
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- Fermion mass and width in QED in a magnetic fieldA. Ayala, J. Castaño-Yepes, M. Loewe, and E. Muñoz, “Fermion mass and width in QED in a magnetic field”, Physical Review D 104, 016006 (2021) We revisit the calculation of the fermion self-energy in QED in the presence of a magnetic field. We show that, after carrying out the renormalization procedure and identifying the most …
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- Path integral of the relativistic point particle in Minkowski spaceB. Koch and E. Muñoz, “Path integral of the relativistic point particle in Minkowski space”, Physical Review D 103, 105025 (2021) In this article, we analyze the fundamental global and local symmetries involved in the action for the free relativistic point particle in Minkowski space. Moreover, we identify a hidden local symmetry, whose explicit consideration …
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- Chemical sensing with graphene: A quantum field theory perspectiveH. Falomir, M. Loewe and E. Muñoz, “Chemical sensing with graphene: A quantum field theory perspective”, Physical Review B 103, 235431 (2021) We studied theoretically the effect of a low concentration of adsorbed polar molecules on the optical conductivity of graphene, within the Kubo linear response approximation. Our analysis is based on a continuum model …
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- The breakdown of Moore´s law induced by weak Anderson localization and by size effects in nano-scale metallic connectorsClaudio Arenas, Guillermo Herrera, Enrique Muñoz and Raul Muñoz, “The breakdown of Moore´s law induced by weak Anderson localization and by size effects in nano-scale metallic connectors.”, Materials Research Express 8(1), 015026 (2021) We report the resistivity measured at temperatures between 5 K and 300 K of a Cu film 63 nm thick with grains that have …
- Sensing Electrochemical Signals using a Nitrogen-Vacancy Center in DiamondHossein Dinani, Enrique Muñoz, and Jeronimo Maze, “Sensing Electrochemical Signals using a Nitrogen-Vacancy Center in Diamond”. Nanomaterials 11, 358 (2021) Chemical sensors with high sensitivity that can be used under extreme conditions and can be miniaturized are of high interest in science and industry. The nitrogen-vacancy (NV) center in diamond is an ideal candidate as a …
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