103,088 research outputs found
Kad Hari Raya
No full textKad ucapan hari raya yang diutuskan kepada Profesor Diraja Ungku Abdul Aziz dan keluarga daripada Dr. G. Baskaran. Jabatan Kajian Haiwan Fakulti Perubata
Les angles faciaux des Mélano-Indiens
No full textLaffont J., Baskaran (B.), Olivier G. Les angles faciaux des Mélano-Indiens. In: Bulletins et Mémoires de la Société d'anthropologie de Paris, XI° Série. Tome 3 fascicule 3, 1962. pp. 219-223
COMSOL data files for the publication "3D Visualisation of trans-syncytial nanopores provides a pathway for paracellular diffusion across the human placental syncytiotrophoblast"
No full textThe zip file contains the COMSOL(COMSOL Multiphysics v5.5; COMSOL AB, Stockholm, Sweden) input files for each of the nanopores simulated in our study "Visualisation of trans-syncytial nanopores provides a pathway for paracellular diffusion across the human placental syncytiotrophoblast"
Authors: Rohan M Lewis, Harikesan Baskaran, Jools Green, Stanimir Tashev, Eleni Paleologou1, Emma M Lofthouse, Jane K Cleal, Anton Page, David S Chatelet, Patricia Goggin, Bram G Sengers.
The paper to be published in iScience
A preprint is also available in Biorxiv doi: https://doi.org/10.1101/2022.01.26.477815</span
Possible high-temperature superconducting state with a d plus id pairing symmetry in doped graphene
No full textMotivated by a suggestion in our earlier work [G. Baskaran, Phys. Rev. B 65, 212505 (2002)], we study electron correlation driven superconductivity in doped graphene where on-site correlations are believed to be of intermediate strength. Using an extensive variational Monte Carlo study of the repulsive Hubbard model and a correlated ground state wave function, we show that doped graphene supports a superconducting ground state with a d+id pairing symmetry. We estimate superconductivity reaching room temperatures at an optimal doping of about 15%-20%. Our work suggests that correlations can stabilize superconductivity even in systems with intermediate coupling
Possible high-temperature superconducting state with a d+id pairing symmetry in doped graphene
No full textMotivated by a suggestion in our earlier work [G. Baskaran, Phys. Rev. B 65, 212505 (2002)], we study electron correlation driven superconductivity in doped graphene where on-site correlations are believed to be of intermediate strength. Using an extensive variational Monte Carlo study of the repulsive Hubbard model and a correlated ground state wave function, we show that doped graphene supports a superconducting ground state with a d+id pairing symmetry. We estimate superconductivity reaching room temperatures at an optimal doping of about 15%–20%. Our work suggests that correlations can stabilize superconductivity even in systems with intermediate coupling
Anderson pseudospin and Superradiant Superconductivity revisited
No full textUsing Anderson pseudospins (Anderson, 1958; Bardeen et al., 1957), I suggested in 2012 (Baskaran, 2012) superradiant superconductivity (SRSC) and related Dicke phenomena in bulk superconductors. It was a response to a report from Cavalleri’s lab (Kaiser et al., 2012; Fausti et al., 2011), of transient room temperature superconductivity in YBCO, when pumped by 20 THz laser pulses. In my minimal model, Anderson pseudospins in k-space in a bulk superconductor were coupled to single polariton mode. The model was adapted to the pseudogap normal state of YBCO to explain observed transient superconductivity. We also pointed out, possibility of other Dicke phenomena, (i) spontaneous superradiance above a critical polariton matter coupling, with no pumping, (ii) enhanced quantum entanglement near the critical coupling and (iii) superfluoresence. Here we revisit our early work. Recent discovery by Ebbesens group (Thomas et al., 2019) of large increase of superconducting Tc from 30 K to 45 K in KC60 via specially designed plasmon–phonon-polariton mode, but with no external pumping seems to be in line with our early prediction. Relevance of SRSC to developments, including other superradiant matters and Higgs Spectroscopy is pointed out
Equations-of-motion method for triplet excitation operators in graphene
No full textThe particle–hole continuum in the Dirac sea of graphene has a unique window underneath, which in principle leaves room for bound state formation in the triplet particle–hole channel (Baskaran and Jafari 2002 Phys. Rev. Lett. 89 016402). In this work, we construct appropriate triplet particle–hole operators and, using a repulsive Hubbard-type effective interaction, we employ equations of motion to derive approximate eigenvalue equations for such triplet operators. While the secular equation for the spin density fluctuations gives rise to an equation which is second order in the strength of the short range interaction, the explicit construction of the triplet operators obtained here shows that, in terms of these operators, the second-order equation can be factorized to two first-order equations, one of which gives rise to a solution below the particle–hole continuum of Dirac electrons in undoped graphene
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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