Outputs (741)

Hot phonon effects on high field transport in GaN & AlN (2015)
Journal Article
Dyson, A., Naylor, D. R., & Ridley, B. K. (2015). Hot phonon effects on high field transport in GaN & AlN. IEEE transactions on electron devices, 62(11), 3613-3618. https://doi.org/10.1109/TED.2015.2476383

We have studied the effects of hot phonons on the high-field transport in GaN & AlN. The dynamics of the non-equilibrium electron-LO phonon system is studied via an ensemble Monte-Carlo code. We find that under steady-state conditions the hot-phonons... Read More about Hot phonon effects on high field transport in GaN & AlN.

Maximum violations of the quantum-witness equality (2015)
Journal Article
Schild, G., & Emary, C. (2015). Maximum violations of the quantum-witness equality. Physical review. A, 92(3), 1-6. https://doi.org/10.1103/PhysRevA.92.032101

We consider the quantum-witness test of macroscopic realism and derive an upper bound for possible violations of this equality due to quantum mechanics. The bound depends only on the number of possible outcomes for the blind measurement at the heart... Read More about Maximum violations of the quantum-witness equality.

Enhanced two photon absorption cross section and optical nonlinearity of a quasi-octupolar molecule (2015)
Journal Article
Namboodiri, C., Bongu, S., Bisht, P., Mukkamala, R., Chandra, B., Aidhen, I., Kelly, T., & Costello, J. (2016). Enhanced two photon absorption cross section and optical nonlinearity of a quasi-octupolar molecule. Journal of Photochemistry and Photobiology A: Chemistry, 314, 60-65. https://doi.org/10.1016/j.jphotochem.2015.08.016

Two photon absorption (2PA) cross sections of two quasi-octupolar molecules (E,E,E)-2,4,6-tris [2-(4-N,N-diphenylaminophenyl)vinyl]pyridine (DPATSP) and (2,4,6-tris((E)-4-(diphenylamino)styryl)-1-methylpyridine-1-ium iodide, DPATSP-Me) have been esti... Read More about Enhanced two photon absorption cross section and optical nonlinearity of a quasi-octupolar molecule.

Ultrafast and Distinct Spin Dynamics in Magnetic Alloys (2015)
Journal Article
Radu, I., Stamm, C., Eschenlohr, A., Radu, F., Abrudan, R., Vahaplar, K., Kachel, T., Pontius, N., Mitzner, R., Holldack, K., Föhlisch, A., Ostler, T. A., Mentink, J. H., Evans, R. F., Chantrell, R. W., Tsukamoto, A., Itoh, A., Kirilyuk, A., Kimel, A. V., & Rasing, T. (2015). Ultrafast and Distinct Spin Dynamics in Magnetic Alloys. SPIN, 5(3), Article 1550004. https://doi.org/10.1142/S2010324715500046

Controlling magnetic order on ultrashort timescales is crucial for engineering the next-generation magnetic devices that combine ultrafast data processing with ultrahigh-density data storage. An appealing scenario in this context is the use of femtos... Read More about Ultrafast and Distinct Spin Dynamics in Magnetic Alloys.

Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures (2015)
Journal Article
Ostler, T. A., Cuadrado, R., Chantrell, R. W., Rushforth, A. W., & Cavill, S. A. (2015). Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures. Physical review letters, 115(6), Article 067202. https://doi.org/10.1103/PhysRevLett.115.067202

The dynamics of magnetic vortex cores is of great interest because the gyrotropic mode has applications in spin torque driven magnetic microwave oscillators, and also provides a means to flip the direction of the core for use in magnetic storage devi... Read More about Strain Induced Vortex Core Switching in Planar Magnetostrictive Nanostructures.

Advanced undergraduate RC circuits: An experimentalist's perspective (2015)
Journal Article
Kelly, T. J. (2015). Advanced undergraduate RC circuits: An experimentalist's perspective. European Journal of Physics, 36(5), 055041. https://doi.org/10.1088/0143-0807/36/5/055041

In this paper, an advanced undergraduate RC circuit is studied in two different ways. The circuit is a typical series RC circuit with a time-varying voltage source. The temporal profile of the voltage is an isolated, Gaussian shaped pulse. The voltag... Read More about Advanced undergraduate RC circuits: An experimentalist's perspective.

Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N (2015)
Journal Article
Pignatari, M., Zinner, E., Hoppe, P., J. Jordan, C., K. Gibson, B., Trappitsch, R., Herwig, F., Fryer, C., Hirschi, R., & X. Timmes, F. (2015). Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N. Astrophysical journal. Letters, 808(2), L43. https://doi.org/10.1088/2041-8205/808/2/L43

Carbon-rich grains with isotopic anomalies compared to the Sun are found in primitive meteorites. They were made by stars, and carry the original stellar nucleosynthesis signature. Silicon carbide grains of Type X and C and low-density (LD) graphites... Read More about Carbon-rich presolar grains from massive stars : subsolar ¹²C/¹³C and ¹⁴N/¹⁵N ratios and the mystery of ¹⁵N.

Erratum: Stellar neutron capture cross sections ofNe20,21,22[Phys. Rev. C90, 045804 (2014)] (2015)
Journal Article
Heil, M., Plag, R., Uberseder, E., Gallino, R., Bisterzo, S., Juseviciute, A., Käppeler, F., Lederer, C., Mengoni, A., & Pignatari, M. (2015). Erratum: Stellar neutron capture cross sections ofNe20,21,22[Phys. Rev. C90, 045804 (2014)]. Physical Review C - Nuclear Physics, 92(1), Article 019902. https://doi.org/10.1103/physrevc.92.019902

Erratum: Ni 62 (n,γ) and Ni 63 (n,γ) cross sections measured at the n-TOF facility at CERN [Phys. Rev. C (2014) 89 (025810)] (2015)
Journal Article
Tsinganis, A., Tassan-Got, L., Tarrío, D., Tain, J. L., Tagliente, G., Schmidt, S., Schillebeeckx, P., Lederer, C., Massimi, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero, C., Gunsing, F., Käppeler, F., Kivel, N., Pignatari, M., Reifarth, R., Schumann, D., Wallner, A., …Sarmento, R. (2015). Erratum: Ni 62 (n,γ) and Ni 63 (n,γ) cross sections measured at the n-TOF facility at CERN [Phys. Rev. C (2014) 89 (025810)]. Physical Review C - Nuclear Physics, 92(1), Article 019903. https://doi.org/10.1103/physrevc.92.019903

Galactic evolution of rapid neutron capture process abundances: The inhomogeneous approach (2015)
Journal Article
Wehmeyer, B., Pignatari, M., & Thielemann, F.-K. (2015). Galactic evolution of rapid neutron capture process abundances: The inhomogeneous approach. Monthly notices of the Royal Astronomical Society, 452(2), 1970-1981. https://doi.org/10.1093/mnras/stv1352

For the origin of heavy r-process elements, different sources have been proposed, e.g., core-collapse supernovae or neutron star mergers. Old metal-poor stars carry the signature of the astrophysical source(s). Among the elements dominantly made by t... Read More about Galactic evolution of rapid neutron capture process abundances: The inhomogeneous approach.