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pro vyhledávání: '"COSTA, N. P."'
Autor:
Gupta, N. K, Gong, R., Wu, Y., Kang, M., Parzyck, C. T., Gregory, B. Z., Costa, N., Sutarto, R., Sarker, S., Singer, A., Schlom, D. G., Shen, K. M., Hawthorn, D. G.
The discovery of superconductivity in La$_3$Ni$_2$O$_7$ under pressure has motivated the investigation of a parent spin density wave (SDW) state which could provide the underlying pairing interaction. Here, we employ resonant soft x-ray scattering an
Externí odkaz:
http://arxiv.org/abs/2409.03210
Autor:
Aguirre, C. A., Faundez, J., Diaz, P., Laroze, D., Polo, A. S. Mosquera, Costa, N. C., Barba-Ortega, J.
We theoretically investigate the magnetic response on a three-dimensional superconducting nanobridge system, which is compound of two parallel parallelepiped (samples) connected through a nanobridge of size $\mathbf{L}$ and thickness $\mathbf{x}$, wh
Externí odkaz:
http://arxiv.org/abs/2408.15463
Publikováno v:
Phys. Rev. B 101, 165109 (2020)
In itinerant systems, electron-electron interactions may lead to the formation of local magnetic moments and their effective exchange coupling, which in turn gives rise to long-range magnetic order. Therefore, when moment formation is weakened, such
Externí odkaz:
http://arxiv.org/abs/1912.04918
Publikováno v:
Phys. Rev. B 100, 045125 (2019)
We investigate charge ordering in the Holstein model in the presence of anisotropic hopping, $t_x, t_y=1-\delta, 1 + \delta$, as a model of the effect of strain on charge density wave (CDW) materials. Using Quantum Monte Carlo simulations, we show th
Externí odkaz:
http://arxiv.org/abs/1905.05831
Autor:
Costa, N. C., Mendes-Santos, T., Paiva, T., Curro, N. J., Santos, R. R. dos, Scalettar, R. T.
Publikováno v:
Phys. Rev. B 99, 195116 (2019)
The Kondo and Periodic Anderson Model (PAM) are known to provide a microscopic picture of many of the fundamental properties of heavy fermion materials and, more generally, a variety of strong correlation phenomena in $4f$ and $5f$ systems. In this p
Externí odkaz:
http://arxiv.org/abs/1812.09426
Publikováno v:
Phys. Rev. Lett. 122, 077602 (2019)
The effect of electron-electron interactions on Dirac fermions, and the possibility of an intervening spin liquid phase between the semi-metal and antiferromagnetic (AF) regimes, has been a focus of intense quantum simulation effort over the last fiv
Externí odkaz:
http://arxiv.org/abs/1809.07902
Publikováno v:
Phys. Rev. B 97, 085123 (2018)
Tight-binding Hamiltonians with single and multiple orbitals exhibit an intriguing array of magnetic phase transitions. In most cases the spin ordered phases are insulating, while the disordered phases may be either metallic or insulating. In this pa
Externí odkaz:
http://arxiv.org/abs/1711.00983
Publikováno v:
J. Phys.: Cond. Matter 30, 045602 (2018)
With the purpose of investigating coexistence between magnetic order and superconductivity, we consider a model in which conduction electrons interact with each other, via an attractive Hubbard on-site coupling $U$, and with local moments on every si
Externí odkaz:
http://arxiv.org/abs/1702.03359
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Akademický článek
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