Zobrazeno 1 - 10
of 3 590
pro vyhledávání: '"Lopes, J M"'
Autor:
Joao, Simao M., Petrovic, Marko D., Lopes, J. M. Viana Parente, Ferreira, Aires, Nikolic, Branislav K.
Quantum transport studies of spin-dependent phenomena in solids commonly employ the Kubo or Keldysh formulas for the steady-state density matrix in the linear-response regime. Its trace with operators of interest -- such as, spin density, spin curren
Externí odkaz:
http://arxiv.org/abs/2408.16611
Autor:
Veiga, H. P., João, S. M., Pinho, J. M. Alendouro, Pires, J. P. Santos, Lopes, J. M. Viana Parente
Charge transport in disordered two-dimensional (2D) systems showcases a myriad of unique phenomenologies that highlight different aspects of the underlying quantum dynamics. Electrons in such systems undergo a crossover from ballistic propagation to
Externí odkaz:
http://arxiv.org/abs/2311.03983
We perform Monte-Carlo measurements of two and three point functions of charged operators in the critical O(2) model in 3 dimensions. Our results are compatible with the predictions of the large charge superfluid effective field theory. To obtain rel
Externí odkaz:
http://arxiv.org/abs/2305.00499
Autor:
Lv, H., da Silva, A., Figueroa, A. I., Guillemard, C., Aguirre, I. Fernández, Camosi, L., Aballe, L., Valvidares, M., Valenzuela, S. O., Schubert, J., Schmidbauer, M., Herfort, J., Hanke, M., Trampert, A., Engel-Herbert, R., Ramsteiner, M., Lopes, J. M. J.
Publikováno v:
Small (2023), 2302387
Van der Waals (vdW) heterostructures combining layered ferromagnets and other two-dimensional (2D) crystals are promising building blocks for the realization of ultra-compact devices with integrated magnetic, electronic and optical functionalities. T
Externí odkaz:
http://arxiv.org/abs/2303.10252
Heterostructures made of stacked 2D materials with different electronic properties are studied for their potential in creating multifunctional devices. Graphene (G) and hexagonal boron nitride (h-BN) van der Waals (vdW) systems have been extensively
Externí odkaz:
http://arxiv.org/abs/2303.08191
Autor:
Pinho, J. M. Alendouro, Pires, J. P. Santos, João, Simão M., Amorim, B., Lopes, J. M. Viana Parente
Publikováno v:
Physical Review B 108, 075402 (2023)
It has long been known that quantum particles moving in a periodic lattice and subject to a constant force field undergo an oscillatory motion that is referred to as Bloch Oscillations (BOs). However, it is also known that, under quite general condit
Externí odkaz:
http://arxiv.org/abs/2212.05574
Autor:
Suresh, A., Soares, R. D., Mondal, P., Pires, J. P. Santos, Lopes, J. M. Viana Parente, Ferreira, Aires, Feiguin, A. E., Plecháč, P., Nikolić, B. K.
Publikováno v:
Phys. Rev. A 109, 024413 (2024)
Using the nascent concept of quantum spin-transfer torque [A. Zholud et al., Phys. Rev. Lett. {\bf 119}, 257201 (2017); M. D. Petrovi\'{c} {\em et al.}, Phys. Rev. X {\bf 11}, 021062 (2021)], we demonstrate that a current pulse can be harnessed to en
Externí odkaz:
http://arxiv.org/abs/2210.06634
Publikováno v:
Physical Review Letters 129, 196601 (2022)
We present the first theoretical study of transport properties of Weyl semimetals with point defects. Focusing on a class of time-reversal symmetric Weyl lattice models, we show that dilute lattice vacancies induce a finite density of quasi-localized
Externí odkaz:
http://arxiv.org/abs/2205.15123
Publikováno v:
Physical Review B 106, 184201 (2022)
The electronic structure of a cubic $\mathcal{T}$-symmetric Weyl semimetal is analysed in the presence of atomic-sized vacancy defects. Isolated vacancies are shown to generate nodal bound states with $r^{{\scriptscriptstyle -2}}$ asymptotic tails, e
Externí odkaz:
http://arxiv.org/abs/2205.05108
Autor:
Tornatzky, H., Robert, C., Renucci, P., Han, B., Blon, T., Lassagne, B., Ballon, G., Lu, Y., Watanabe, K., Taniguchi, T., Urbaszek, B., Lopes, J. M. J., Marie, X.
We present magneto-photoluminescence measurements in a hybrid 2D semiconductor/ferromagnetic structure consisting of MoSe2/hBN/Ni. When the Nickel layer is magnetized, we observe circularly polarized photoluminescence of the trion peak in MoSe2 monol
Externí odkaz:
http://arxiv.org/abs/2110.13007