52 citations · 170 across the 4 of their papers we have counts for
4 papers
Frustration of Decoherence in Open Quantum Systems
E. Novais, A. H. Castro Neto, L. Borda +2
We study a model of frustration of decoherence in an open quantum system. Contrary to other dissipative ohmic impurity models, such as the Kondo model or the dissipative two-level…
Slow two-level systems in point contacts
A. Halbritter, L. Borda, A. Zawadowski
A great variety of experiments, like heat release measurements, acoustic measurements, and transport measurements on mesoscopic samples have proved that two level systems (TLSs) ha…
Quantum Magnetic Impurities in Magnetically Ordered Systems
A. H. Castro Neto, E. Novais, L. Borda +2
We discuss the problem of a spin 1/2 impurity immersed in a spin S magnetically ordered background. We show that the problem maps onto a generalization of the dissipative two level…
Theory of magnetoresistance in films of dilute magnetic alloys
L. Borda, A. Zawadowski
Earlier a magnetic anisotropy for magnetic impurities nearby the surface of non-magnetic host was proposed in order to explain the size dependence of the Kondo effect in dilute mag…