Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Spremo, Ivan"'
Publikováno v:
Comptes Rendus Chimie 10, 60 (2007)
We derive the effective long-wavelength Euclidean action for the antiferromagnetic spin-waves of ordered quantum antiferromagnets subject to a uniform magnetic field. We point out that the magnetic field dependence of the spin-wave dispersion predict
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511706
Autor:
Spremo, Ivan, Schuetz, Florian, Kopietz, Peter, Pashchenko, Volodymyr, Wolf, Bernd, Lang, Michael, Bats, Jan W., Hu, Chunhua, Schmidt, Martin U.
Publikováno v:
Phys. Rev. B 72, 174429 (2005)
For temperatures T well above the ordering temperature T*=3.0+-0.2K the magnetic properties of the metal-organic material Mn[C10H6(OH)(COO)]2x2H20 built from Mn^2+ ions and 3-hydroxy-2-naphthoic anions can be described by a S=5/2 quantum antiferromag
Externí odkaz:
http://arxiv.org/abs/cond-mat/0505425
Publikováno v:
Phys. Rev. B 67, 104427 (2003)
We derive the low-temperature properties of spin-S quantum Heisenberg magnets from the Gibbs free energy G(M) for fixed order parameter M. Assuming that the low-lying elementary excitations of the system are renormalized spin waves, we show that a st
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210578
Autor:
Kopietz, Peter, Spremo, Ivan
Publikováno v:
Phys. Rev. Lett. 89, 079701 (2002)
Comment on "Spin Dynamics of the 2D Spin 1/2 Quantum Antiferromagnet Copper Deuteroformate Tetradeuterate (CFTD)", H. M. Ronnow et al., Phys. Rev. Lett. 87, 037202 (2001)
Comment: 1 page, 1 figure, REVTeX, to be published in Phys. Rev. Lett
Comment: 1 page, 1 figure, REVTeX, to be published in Phys. Rev. Lett
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206106
Autor:
Spremo, Ivan.
University, Diss., 2006--Frankfurt (Main).
Externí odkaz:
http://deposit.d-nb.de/cgi-bin/dokserv?idn=981056474
http://publikationen.ub.uni-frankfurt.de/volltexte/2006/3094/
http://publikationen.ub.uni-frankfurt.de/volltexte/2006/3094/
Publikováno v:
In Comptes rendus - Chimie 2007 10(1):60-64
Autor:
Spremo, Ivan
The focus of this thesis is on quantum Heisenberg magnets in low dimensions. We modify the method of spin-wave theory in order to address two distinct issues. In the first part we develop a variant of spin-wave theory for low-dimensional systems, whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______603::91df30d5875cd6092273e1d34da1d03f
http://publikationen.ub.uni-frankfurt.de/files/2306/spremo_diss.pdf
http://publikationen.ub.uni-frankfurt.de/files/2306/spremo_diss.pdf