786 citations
- Leiden Observatory17 papers
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11 papers · 1 filter
Long-range ferromagnetic dipolar ordering of high-spin molecular clusters
A. Morello, F. L. Mettes, F. Luis +5
We report the first example of a transition to long-range magnetic order in a purely dipolarly interacting molecular magnet. For the magnetic cluster compound Mn6O4Br4(Et2dbm)6, th…
Quantum Andreev map: A paradigm of quantum chaos in superconductivity
Ph. Jacquod, H. Schomerus, C. W. J. Beenakker
We introduce quantum maps with particle-hole conversion (Andreev reflection) and particle-hole symmetry, which exhibit the same excitation gap as quantum dots in the proximity to a…
Quantum tunnelling of magnetization in Mn12-ac studied by 55Mn NMR
A. Morello, O. N. Bakharev, H. B. Brom +1
We present an ultra-low temperature study (down to T = 20 mK) of the nuclear spin-lattice relaxation (SLR) in the 55Mn nuclei of the molecular magnet Mn12-ac. The nuclear spins act…
Scattering theory of plasmon-assisted entanglement transfer and distillation
J. L. van Velsen, J. Tworzydlo, C. W. J. Beenakker
We analyse the quantum mechanical limits to the plasmon-assisted entanglement transfer observed by E. Altewischer, M.P. van Exter, and J.P. Woerdman [Nature, 418, 304 (2002)]. The…
Distribution of voltage fluctuations in a current-biased conductor
M. Kindermann, Yu. V. Nazarov, C. W. J. Beenakker
We calculate the fluctuating voltage V(t) over a conductor driven out of equilibrium by a current source. This is the dual of the shot noise problem of current fluctuations I(t) in…
Adiabatic quantization of Andreev levels
P. G. Silvestrov, M. C. Goorden, C. W. J. Beenakker
We identify the time between Andreev reflections as a classical adiabatic invariant in a ballistic chaotic cavity (Lyapunov exponent ), coupled to a superconductor by an …