Zobrazeno 1 - 10
of 277
pro vyhledávání: '"Gumhalter, B."'
Importance of van der Waals interactions and cation-anion coupling in an organic quantum spin liquid
Autor:
Lazić, P., Pinterić, M., Góngora, D. Rivas, Pustogow, A., Treptow, K., Ivek, T., Milat, O., Gumhalter, B., Došlić, N., Dressel, M., Tomić, S.
Publikováno v:
Phys. Rev. B 97, 245134 (2018)
The Mott insulator $\beta'$-EtMe$_3$Sb[Pd(dmit)$_2$]$_2$ belongs to a class of charge transfer solids with highly-frustrated triangular lattice of $S=1/2$ molecular dimers and a quantum-spin-liquid ground state. Our experimental and ab initio theoret
Externí odkaz:
http://arxiv.org/abs/1710.01942
Autor:
Pinterić, M., Lazić, P., Pustogow, A., Ivek, T., Kuveždić, M., Milat, O., Gumhalter, B., Basletić, M., Čulo, M., Korin-Hamzić, B., Löhle, A., Hübner, R., Alonso, M. Sanz, Hiramatsu, T., Yoshida, Y., Saito, G., Dressel, M., Tomić, S.
Publikováno v:
Phys. Rev. B 94, 161105 (2016)
The Mott insulator $\kappa$-(BEDT-TTF)$_2$Ag$_2$(CN)$_3$ forms a highly-frustrated triangular lattice of $S=1/2$ dimers with a possible quantum-spin-liquid state. Our experimental and numerical studies reveal the emergence of a slight charge imbalanc
Externí odkaz:
http://arxiv.org/abs/1607.07596
Autor:
Dressel, M., Lazic, P., Pustogow, A., Zhukova, E., Gorshunov, B., Schlueter, J. A., Milat, O., Gumhalter, B., Tomic, S.
Publikováno v:
Phys. Rev. B 93, 081201(R) (2016)
The dimer Mott insulator $\kappa$-(BEDT-TTF)$_2$Cu$_2$(CN)$_3$ exhibits unusual electrodynamic properties. Numerical investigations of the electronic ground state and the molecular and lattice vibrations reveal the importance of the Cu$_2$(CN)$_3^-$
Externí odkaz:
http://arxiv.org/abs/1601.04926
Autor:
Siber, A., Gumhalter, B.
Publikováno v:
Phys. Rev. B 71, 081401(R) (2005)
We develop a multidimensional coupled channel method suitable for studying the interplay of bound state resonance and phonon assisted scattering of inert gas atoms from solid surfaces in one, two and three dimensions. This enables us to get insight i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502198
Autor:
Siber, A., Gumhalter, B.
Publikováno v:
Surf. Sci. 529, L269 (2003)
We comment and discuss the findings and conclusions of a recent theoretical study of the diffraction of He atoms from a monolayer of Xe atoms adsorbed on the graphite (0001) surface [Khokonov et al., Surf. Sci. 496(2002)L13]. By revisiting the proble
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304011
Autor:
Siber, A., Gumhalter, B.
Publikováno v:
Phys. Rev. Lett. 90, 126103 (2003)
We present a comparative assessment of the features of inelastic atom-surface scattering spectra that are produced by several different forms of linear and nonlinear phonon coupling to the projectile atom. Starting from a simple theoretical model of
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304010
Autor:
Siber, A., Gumhalter, B., Braun, J., Graham, A. P., Bertino, M. F., Toennies, J. P., Fuhrmann, D., Wöll, Ch.
Publikováno v:
A. Siber, B. Gumhalter, J. Braun, A.P. Graham, M.F. Bertino, J.P. Toennies, D. Fuhrmann and Ch. Woll, Phys. Rev. B 59(8), 5898 (1999)
The surface phonon dispersion curves of commensurate Xe monolayers on Cu(111) and incommensurate Xe monolayers on Cu(001) surfaces have been measured using He atom scattering (HAS) time of flight (TOF) spectroscopy. The TOF spectra are interpreted by
Externí odkaz:
http://arxiv.org/abs/cond-mat/0001102
Publikováno v:
B. Gumhalter, A. Siber and J.P. Toennies, Phys. Rev. Lett. 83, 1375 (1999)
Nonperturbative expressions are derived for the angular resolved energy transfer spectra in the quantum regime of multiphonon scattering of inert gas atoms from surfaces. Application to He atom scattering from a prototype heatbath Xe/Cu(111) shows go
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909422
Publikováno v:
A. Siber, B. Gumhalter, J.P. Toennies, Vacuum 54, 315
Recently developed quantum mechanical theory of inelastic He atom scattering (HAS) from solid surfaces is employed to analyze the energy transfer between projectile particles (thermal energy He-atoms) and vibrational degrees of freedom (phonons) char
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909421
Autor:
Siber, A., Gumhalter, B.
Publikováno v:
A. Siber and B. Gumhalter, Phys. Rev. Lett. 81(8), 1742 (1998)
In the original paper Althoff et al. (see ibid., vol.79, p.4429 (1997)) reported a study of scattering of thermal Ne, Ar, and Kr atoms from a Cu(111) surface in which they assessed the corresponding Debye-Waller factor (DWF) as a function of the part
Externí odkaz:
http://arxiv.org/abs/cond-mat/9909419