Zobrazeno 1 - 10
of 2 526
pro vyhledávání: '"Rossier, P"'
Knowledge of the occupation ratio and the energy splitting of a two-level system yields a direct readout of its temperature. Based on this principle, the determination of the temperature of an individual two-level magnetic atom was demonstrated using
Externí odkaz:
http://arxiv.org/abs/2410.02404
Autor:
Zhao, Chenxiao, Yang, Lin, Henriques, João C. G., Ferri-Cortés, Mar, Catarina, Gonçalo, Pignedoli, Carlo A., Ma, Ji, Feng, Xinliang, Ruffieux, Pascal, Fernández-Rossier, Joaquín, Fasel, Roman
Haldane's seminal work established two fundamentally different types of excitation spectra for antiferromagnetic Heisenberg quantum spin chains: gapped excitations in integer-spin chains and gapless excitations in half-integer-spin chains. In finite-
Externí odkaz:
http://arxiv.org/abs/2408.10045
Autor:
Fu, Xiaoshuai, Huang, Li, Liu, Kun, Henriques, João C. G., Gao, Yixuan, Han, Xianghe, Chen, Hui, Wang, Yan, Palma, Carlos-Andres, Cheng, Zhihai, Lin, Xiao, Du, Shixuan, Ma, Ji, Fernández-Rossier, Joaquín, Feng, Xinliang, Gao, Hong-Jun
Understanding and engineering the coupling of spins in nanomaterials is of central importance for designing novel devices. Graphene nanostructures with {\pi}-magnetism offer a chemically tunable platform to explore quantum magnetic interactions. Howe
Externí odkaz:
http://arxiv.org/abs/2407.20511
A generalization of the graphene honeycomb model to the case where each site in the honeycomb lattice contains a $n-$fold degenerate set of eigenstates of the $C_3$ symmetry has been recently proposed to describe several systems, including triangulen
Externí odkaz:
http://arxiv.org/abs/2407.08467
Autor:
Caha, Ihsan, Boddapatti, Loukya, Ahmad, Aqrab ul, Banobre, Manuel, Costa, Antonio T., Enyashin, Andrey N., Li, Weibin, Gargiani, Pierluigi, Valvidares, Manuel, Fernandez-Rossier, Joaquin, Deepak, Francis Leonard
CrI3 is a layered ferromagnetic insulator that has recently attracted enormous interest as it was the first example of a stand-alone monolayer ferromagnet, paving the way towards the study of two-dimensional magnetic materials and their use as buildi
Externí odkaz:
http://arxiv.org/abs/2405.14967
Altermagnets are a new class of magnetic materials with zero net magnetization (like antiferromagnets) but spin-split electronic bands (like ferromagnets) over a fraction of reciprocal space. As in antiferromagnets, magnons in altermagnets come in tw
Externí odkaz:
http://arxiv.org/abs/2405.12896
Quantum control techniques play an important role in manipulating and harnessing the properties of different quantum systems, including isolated atoms. Here, we propose to achieve quantum control over a single on-surface atomic spin using Landau-Zene
Externí odkaz:
http://arxiv.org/abs/2404.19036
Autor:
Zhao, Chenxiao, Catarina, Gonçalo, Zhang, Jin-Jiang, Henriques, João C. G., Yang, Lin, Ma, Ji, Feng, Xinliang, Gröning, Oliver, Ruffieux, Pascal, Fernández-Rossier, Joaquín, Fasel, Roman
Unlocking the potential of topological order within many-body spin systems has long been a central pursuit in the realm of quantum materials. Despite extensive efforts, the quest for a versatile platform enabling site-selective spin manipulation, ess
Externí odkaz:
http://arxiv.org/abs/2402.13590
Autor:
Henriques, J. C. G., Jacob, D., Molina-Sánchez, A., Catarina, G., Costa, A. T., Fernández-Rossier, J.
The study of open-shell nanographenes has relied on a paradigm where spins are the only low-energy degrees of freedom. Here we show that some nanographenes can host low-energy excitations that include strongly coupled spin and orbital degrees of free
Externí odkaz:
http://arxiv.org/abs/2312.04938
Motivated by recent experimental breakthroughs, we propose a strategy to design two-dimensional spin lattices with competing interactions that lead to non-trivial emergent quantum states. We consider $S=1/2$ nanographenes with $C_3$ symmetry as build
Externí odkaz:
http://arxiv.org/abs/2312.01783