Browsing School of Physics by Sponsor "European Union (EU)"
Now showing items 1-20 of 53
-
Ab initio calculation of the biasdependent transport properties of Mn12 molecules
(2009)The bias-dependent transport properties of a device constructed by sandwiching a Mn 12 single molecule magnet between gold electrodes are investigated within an ab initio framework combining the nonequilibrium Green?s ... -
All-printed dielectric capacitors from high permittivity, liquid-exfoliated BiOCl nanosheets
(2020)Printed networks of insulating 2D materials are promising for dielectric applications in printed electronic devices. However, this work has not really progressed beyond networks of BN nanosheets displaying dielectric ... -
Assessment of density functional theory for iron(II) molecules across the spin-crossover transition
(2012)Octahedral Fe 2 + molecules are particularly interesting as they often exhibit a spin-crossover transi- tion. In spite of the many efforts aimed at assessing the performances of density functional theory for such ... -
Coexistance of Giant Tunneling Electroresistance and Magnetoresistance in an All-Oxide Composite Magnetic Tunnel Junction
(2012)We propose, by performing advanced ab initio electron transport calculations, an all-oxide composite magnetic tunnel junction, within which both large tunneling magnetoresistance (TMR) and tunneling electroresistance ... -
Crystallographic orientation analyses of magnetite thin films using electron backscatter diffraction (EBSD)
(2006)The crystallographic orientation of magnetite (Fe3O4) thin films was measured using electron backscatter diffraction (EBSD). Misorientation boundaries appear in maps of angular misorientation data. The distribution of ... -
Developing models to fit capacity-rate data in battery systems
(2020)Analyzing rate performance data in battery electrodes is greatly facilitated by access to simple analytical models. Here, we describe a number of simple equations for fitting capacity–rate data. These equations output fit ... -
Dynamical exchange interaction from time-dependent spin density functional theory
(2013)We report on ab initio time-dependent spin-dynamics simulations for a two-center magnetic molecular complex within the framework of the time-dependent noncollinear spin-density functional theory. In particular, we discuss ... -
Effect of insertion layer on electrode properties in magnetic tunnel junctions with a zero-moment half-metal
(2019)Due to its negligible spontaneous magnetization, high spin polarization and giant perpendicular magnetic anisotropy, Mn2RuxGa (MRG) is an ideal candidate as an oscillating layer in THz spin-transfertorque nano-oscillators. ... -
The Effect of Surfactant Choice and Concentration on the Dimensions and Yield of Liquid Phase Exfoliated Nanosheets
(2020)Liquid-phase exfoliation has progressed in recent years to become a common method for production of 2D materials. During exfoliation, surfactants can be used to stabilize the nanosheets against reaggregation. Here, using ... -
Effect of the Gate Volume on the Performance of Printed Nanosheet Network-Based Transistors
(2020)Demonstration of high-performance, all-printed transistors fabricated only from networks of two-dimensional nanosheets would represent a significant advance in printed electronics. However, such devices have only been shown ... -
The electrical conductivity of solution-processed nanosheet networks
(2021)Solution-processed networks of 2D nanosheets are promising for a range of applications in the field of printed electronics. However, the electrical performance of these networks represented for example by the mobility – ... -
Electronic and magnetic properties of the interface between metal-quinoline molecules and cobalt
(2014)It was recently established that spin injection from a ferromagnetic metal into an organic semiconductor depends largely on the formation of hybrid interface states. Here we investigate whether the magnetic properties of ... -
Electronic structure of metal quinoline molecules from G0W0 calculations
(2014)The photoemission spectra of four different metal quinoline molecules, namely, the prototypical tris(8-hydroxyquinolinato)-aluminum(III) (Alq3) complex and the related compounds Gaq3,Inq3, and tris-(9-hydroxyphenalen-1oa ... -
Femtosecond ultraviolet laser ablation of silver and comparison with nanosecond ablation
(2013)The ablation plume dynamics arising from ablation of silver with a 500 fs, 248nm laser at 2Jcm 2 has been studied using angle-resolved Langmuir ion probe and thin film deposition techniques. For the same laser fluence, ... -
Fermi level spin polarization of polycrystalline thulium by point contact Andreev reflection spectroscopy
(2011)The spin polarization near the Fermi level in bulk polycrystalline ferrimagnetic thulium is investigated by means of point contact Andreev reflection (PCAR), in the temperature interval (1.9?9.2 K). The highest polarization ... -
Field induced transition in the paramagnetic state of (Sm0.65Sr0.35))MnO3 associated with matnegic clusters
(American Physical Society, 1999)The susceptibility of (Sm0.65Sr0.35)MnO3 shows an unusual temperature dependence above the Curie temperature which is attributed to the presence of small manganese-ion clusters with S?9. A field-induced transition is ... -
First-principles study of high-conductance DNA sequencing with carbon nanotube electrodes
(2012)Rapid and cost-effective DNA sequencing at the single nucleotide level might be achieved by measuring a transverse electronic current as single-stranded DNA is pulled through a nanometer-sized pore. In order to enhance ... -
Graphene-nonlinear optical properties and modelocking capabilities
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)In this thesis, graphene saturable absorber mirror's (SAM) potential for mode-locking ultrafast lasers has been demonstrated, in particular at 2 μm. The saturable absorption of graphene thin films (prepared via drop-casting ... -
Ground state of a spin-crossover molecule calculated by diffusion Monte Carlo
(2013)Spin-crossover molecules have recently emerged as a family of compounds potentially useful for implementing molecular spintronics devices. The calculations of the electronic properties of such molecules is a formidable ... -
Highly Conductive Networks of Silver Nanosheets
(2022)Although printed networks of semiconducting nanosheets have found success in a range of applications, conductive nanosheet networks are limited by low conductivities (<106 S m−1). Here, dispersions of silver nanosheets ...