Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Lopes, J. M. Viana Parente"'
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:
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
Publikováno v:
J. Phys. Mater. 5, 045002 (2022)
Disorder is a key factor influencing the behavior of condensed states of matter, however the true extent of its impact is generally difficult to determine due to the prominent roles played by quantum interference, entanglement between spin and orbita
Externí odkaz:
http://arxiv.org/abs/2110.00574
Publikováno v:
American Journal of Physics 90, 179 (2022)
The concept of local pressure is pivotal to describe many important physical phenomena, such as buoyancy or atmospheric phenomena, which always require the consideration of space-varying pressure fields. These fields have precise definitions within t
Externí odkaz:
http://arxiv.org/abs/2106.10369
Autor:
Peixoto, Rui, Pires, J. P. Santos, Monteiro, Catarina S., Raposo, Maria, Ribeiro, Paulo A., Silva, Susana O., Frazão, Orlando, Lopes, J. M. Viana Parente
Publikováno v:
Phys. Rev. Applied 16, 044041 (2021)
We propose a fiber-based environmental sensor that exploits the reflection phase shift tunability provided by the use of layered coatings composed of dielectric slabs spaced by conducting membranes. A transfer matrix study is done in a simplified the
Externí odkaz:
http://arxiv.org/abs/2106.01287