Zobrazeno 1 - 10
of 576
pro vyhledávání: '"Jarlborg, T"'
Publikováno v:
EPL (Europhysics Letters) 134(1), 17001 (2021)
Recently room temperature superconductivity with Tc=15 degrees Celsius has been discovered in a pressurized complex ternary hydride, CSHx, which is a carbon doped H3S alloy. The nanoscale structure of H3S is a particular realization of the 1993 paten
Externí odkaz:
http://arxiv.org/abs/2105.13123
Autor:
Jarlborg, T.
Publikováno v:
Condens. Matter, 1, 5, (2016)
The band structures of ordered and thermally disordered Li$_2$Mo$_{12}$O$_{34}$ are calculated by use of ab-initio DFT-LMTO method with focus on the behavior of the Mo 3d-core levels. It is shown that thermal disorder and zero-point motion lead to su
Externí odkaz:
http://arxiv.org/abs/1801.09917
Autor:
Jarlborg, T.
Publikováno v:
J Supercond Nov Magn 29 (2016) p. 637-642
The electron-phonon and spin-phonon coupling in typical high-T_C cuprates, like LSCO and HBCO are peaked for just a few q-vectors because of the 2-dimensional Fermi surface shape. The activation of few spin-phonon modes compensates for the low electr
Externí odkaz:
http://arxiv.org/abs/1603.09256
Autor:
Jarlborg, T.
Publikováno v:
J. Supercond. Nov. Magn.(Dec 2014)
The electronic structures of the ground state for several different superconducting materials, such as cuprates, conventional 3-dimensional superconductors, doped semiconductors and low-dimensional systems, are quite different and sometimes in contra
Externí odkaz:
http://arxiv.org/abs/1412.5301
Autor:
Jarlborg, T.
Publikováno v:
Phys. Rev. B89, 184426, (2014)
The electronic structures of fcc Ce are calculated for large supercells with varying disorder by use of density-functional theory. Thermal disorder induces fluctuations of the amplitude of the magnetic moments and an increase the average moments in t
Externí odkaz:
http://arxiv.org/abs/1405.7884
Autor:
Jarlborg, T., Barbiellini, B., Lane, C., Wang, Yung Jui, Markiewicz, R. S., Liu, Zhi, Hussain, Zahid, Bansil, A.
Publikováno v:
Phys. Rev. B 89, 165101 (2014)
The electronic structures of supercells of CeO$_{2-\delta}$ have been calculated within the Density Functional Theory (DFT). The equilibrium properties such as lattice constants, bulk moduli and magnetic moments are well reproduced by the generalized
Externí odkaz:
http://arxiv.org/abs/1403.7650
Autor:
Jarlborg, T.
Publikováno v:
J. Phys.: Condens. Matter 26, 155503, (2014)
The electronic structures of rare-earth elements in the HCP structure, and Europium in the BCC structure, are calculated by use of density-functional theory, DFT. Simulation of X-ray photoemission spectroscopy (XPS) and bremsstrahlung isochromatic sp
Externí odkaz:
http://arxiv.org/abs/1403.7435
Autor:
Mansart, B., Cottet, M. J. G., Mancini, G. F., Jarlborg, T., Dugdale, S. B., Johnson, S. L., Mariager, S. O., Milne, C. J., Beaud, P., Grübel, S., Johnson, J. A., Kubacka, T., Ingold, G., Prsa, K., Rønnow, H. M., Conder, K., Pomjakushina, E., Chergui, M., Carbone, F.
Publikováno v:
Physical Review B 88, 054507 (2013)
The strength of the electron-phonon coupling parameter and its evolution throughout a solid's phase diagram often determines phenomena such as superconductivity, charge- and spin-density waves. Its experimental determination relies on the ability to
Externí odkaz:
http://arxiv.org/abs/1401.4072
Autor:
Jarlborg, T.
Publikováno v:
Solid State Commun 181, 15-19, (2014)
The density-of-states at the Fermi energy, $N(E_F)$, is low in doped superconducting semiconductors and high-$T_C$ cuprates. This contrasts with the common view that superconductivity requires a large electron-boson coupling $\lambda$ and therefore a
Externí odkaz:
http://arxiv.org/abs/1312.6605
Effects of excess or deficiency of oxygen content on the electronic structure of high-$T_C$ cuprates
Publikováno v:
J. Supercond. Nov. Magn. (2013)
Band structure calculations are presented for large supercells of Ba$_2$CuO$_4$ (BCO) with O-vacancies in planar or apic al positions, and of superoxygenated La$_2$CuO$_4$ (LCO) with oxygen interstitials in the La$_2$O$_2$ layers. It is foun d that a
Externí odkaz:
http://arxiv.org/abs/1304.3565