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pro vyhledávání: '"Lunghi P"'
Single-molecule magnets (SMMs) are promising candidates for molecular-scale data storage and processing due to their strong magnetic anisotropy and long spin relaxation times. However, as temperature rises, interactions between electronic states and
Externí odkaz:
http://arxiv.org/abs/2412.07749
Autor:
Mondal, Sourav, Netz, Julia, Hunger, David, Suhr, Simon, Sarkar, Biprajit, van Slageren, Joris, Köhn, Andreas, Lunghi, Alessandro
Magnetic relaxation in coordination compounds is largely dominated by the interaction of the spin with phonons. Large zero-field splitting and exchange coupling values have been empirically found to strongly suppress spin relaxation and have been use
Externí odkaz:
http://arxiv.org/abs/2412.04362
Autor:
Sharma, Tanu, Tiwari, Rupesh Kumar, Dey, Sourav, Mariano, Lorenzo A., Lunghi, Alessandro, Rajaraman, Gopalan
This study presents the first-ever investigation of spin-phonon coupling mechanisms in fullerene-based single-molecule magnets (SMMs) using ab initio CASSCF combined with DFT calculations. While lanthanide-based SMMs, particularly those with DyIII io
Externí odkaz:
http://arxiv.org/abs/2411.10779
Autor:
Aoki, Y., Blum, T., Collins, S., Del Debbio, L., Della Morte, M., Dimopoulos, P., Feng, X., Golterman, M., Gottlieb, Steven, Gupta, R., Herdoiza, G., Hernandez, P., Jüttner, A., Kaneko, T., Lunghi, E., Meinel, S., Monahan, C., Nicholson, A., Onogi, T., Petreczky, P., Portelli, A., Ramos, A., Sharpe, S. R., Simone, J. N., Sint, S., Sommer, R., Tantalo, N., Van de Water, R., Vaquero, A., Wenger, U., Wittig, H.
We review lattice results related to pion, kaon, $D$-meson, $B$-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities. More specifically, we report on the determination of the light-q
Externí odkaz:
http://arxiv.org/abs/2411.04268
Autor:
Briganti, Valerio, Lunghi, Alessandro
Molecular and lattice vibrations are able to couple to the spin of electrons and lead to their relaxation and decoherence. Ab initio simulations have played a fundamental role in shaping our understanding of this process but further progress is hinde
Externí odkaz:
http://arxiv.org/abs/2410.08912
Autor:
Stradi, Francesco Emanuele, Lunghi, Anna, Castiglioni, Matteo, Marchesi, Alberto, Gatti, Nicola
We study online learning in constrained Markov decision processes (CMDPs) in which rewards and constraints may be either stochastic or adversarial. In such settings, Stradi et al.(2024) proposed the first best-of-both-worlds algorithm able to seamles
Externí odkaz:
http://arxiv.org/abs/2410.02269
Autor:
Lunghi, Enrico, Pazar, Beni
We discuss models in which vectorlike quarks and a second Higgs doublet are simultaneously present and couple to the third generation of SM quarks. A general feature of these models is that cascade decays of vectorlike fermions into heavy Higgses (or
Externí odkaz:
http://arxiv.org/abs/2409.12763
Magnetic anisotropy slows down magnetic relaxation and plays a prominent role in the design of permanent magnets. Coordination compounds of Co(II) in particular exhibit large magnetic anisotropy in the presence of low-coordination environments and ha
Externí odkaz:
http://arxiv.org/abs/2409.04418
Autor:
Lunghi, E., Soni, A.
We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay $K^\pm \to \pi^\pm \nu\bar \nu$ stemming from matrix elements involving up-quark loops. The importance of this observable as well as of
Externí odkaz:
http://arxiv.org/abs/2408.11190
Autor:
Mariano, Lorenzo A., Nguyen, Vu Ha Anh, Petersen, Jonatan B., Björnsson, Magnus, Bendix, Jesper, Eaton, Gareth R., Eaton, Sandra S., Lunghi, Alessandro
Magnetic resonance is a prime method for the study of chemical and biological structures and their dynamical processes. The interpretation of these experiments relies on considering the spin of electrons as the sole relevant degree of freedom. By app
Externí odkaz:
http://arxiv.org/abs/2407.01380