Zobrazeno 1 - 10
of 863
pro vyhledávání: '"Richert J"'
Publikováno v:
Phys. Rev. B 81, 115330 (2010)
We show how the charge input signal applied to the gate electrode in a double and triple quantum dot may be converted to a pulse in the Kondo cotunneling current being a spin response of a nano-device under a strong Coulomb blockade. The stochastic c
Externí odkaz:
http://arxiv.org/abs/0910.3298
Autor:
Richert, J.
Publikováno v:
PLA 372 (2008) 5352 - 5355
The nature of the low energy spectrum of frustrated quantum spin systems is investigated by means of a topological test introduced by Y. Hatsugai which enables to infer the possible existence or absence of a gap between the ground state and excited s
Externí odkaz:
http://arxiv.org/abs/0807.2720
Publikováno v:
Physica Status Solidi (c) 6, 2024 (2009)
We show how the charge input signal applied to the gate electrode in double quantum dot may be converted to a pulse in the Kondo cotunneling current as a spin response of a nano-device in a strong Coulomb blockade regime. The stochastic component of
Externí odkaz:
http://arxiv.org/abs/0803.2676
Publikováno v:
Phys. Rev. B 74, 115306 (2006)
We describe the mechanism of charge-spin transformation in a double quantum dot (DQD) with even occupation, where a time dependent gate voltage v(t) is applied to one of its two valleys, whereas the other one is coupled to the source and drain electr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0604518
Publikováno v:
Phys.Rev.E 68 (2003) 026120
The physical origin of the backbendings in the equations of state of finite but not necessarily small systems is studied in the Ising model with fixed magnetization (IMFM) by means of the topological properties of the observable distributions and the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302177
Autor:
Richert, J.
The low-lying bound states of a microscopic quantum many-body system of $n$ particles and the related physical observables can be worked out in a truncated $n$--particle Hilbert space. We present here a non-perturbative analysis of this problem which
Externí odkaz:
http://arxiv.org/abs/quant-ph/0209119
Publikováno v:
Phys.Lett. B531 (2002) 71-76
We show that in small and low density systems described by a lattice gas model with fixed number of particles the location of a thermodynamic phase transition can be detected by means of the distribution of the fluctuations related to an order parame
Externí odkaz:
http://arxiv.org/abs/nucl-th/0105030
Publikováno v:
Eur.Phys.J. A11 (2001) 87-93
We test the influence of the Coulomb interaction on the thermodynamic and cluster generation properties of a system of classical particles described by different lattice models. Numerical simulations show that the Coulomb interaction produces essenti
Externí odkaz:
http://arxiv.org/abs/nucl-th/0011020
Autor:
Richert, J., Wagner, P.
Publikováno v:
Phys.Rept. 350 (2001) 1-92
The properties of excited nuclear matter and the quest for a phase transition which is expected to exist in this system are the subject of intensive investigations. High energy nuclear collisions between finite nuclei which lead to matter fragmentati
Externí odkaz:
http://arxiv.org/abs/nucl-th/0009023
Autor:
Pomorski, K., Nerlo-Pomorska, B., Surowiec, A., Kowal, M., Bartel, J., Dietrich, K., Richert, J., Schmitt, C., Benoit, B., Brennand, E. de Goes, Donadille, L., Badimon, C.
Publikováno v:
Nucl.Phys. A679 (2000) 25-53
We present a comparison of our model treating fission dynamics in conjunction with light-particle (n, p, alpha) evaporation with the available experimental data for the nuclei 126Ba, 188Pt and three isotopes of the element Z=110. The dynamics of the
Externí odkaz:
http://arxiv.org/abs/nucl-th/0001015