Search Results for author: Roser Valentí

Found 6 papers, 2 papers with code

A semimetallic square-octagon (fes) two-dimensional polymer with high mobility

no code implementations24 Feb 2021 Tsai-Jung Liu, Maximilian A. Springer, Niclas Heinsdorf, Agnieszka Kuc, Roser Valentí, Thomas Heine

Secondly, we demonstrate that the rational implementation of band structure features obtained from TB calculations into 2D polymers is feasible with a family of 2D polymers possessing \textbf{fes} structure.

Band Gap Materials Science

The 2021 Quantum Materials Roadmap

no code implementations4 Feb 2021 Feliciano Giustino, Jin Hong Lee, Felix Trier, Manuel Bibes, Stephen M Winter, Roser Valentí, Young-Woo Son, Louis Taillefer, Christoph Heil, Adriana I. Figueroa, Bernard Plaçais, QuanSheng Wu, Oleg V. Yazyev, Erik P. A. M. Bakkers, Jesper Nygård, Pol Forn-Diaz, Silvano De Franceschi, J. W. McIver, L. E. F. Foa Torres, Tony Low, Anshuman Kumar, Regina Galceran, Sergio O. Valenzuela, Marius V. Costache, Aurélien Manchon, Eun-Ah Kim, Gabriel R Schleder, Adalberto Fazzio, Stephan Roche

In recent years, the notion of Quantum Materials has emerged as a powerful unifying concept across diverse fields of science and engineering, from condensed-matter and cold atom physics to materials science and quantum computing.

Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons Superconductivity Quantum Physics

Suppression of topological Mott-Hubbard phases by multiple charge orders in the honeycomb extended Hubbard model

no code implementations30 Dec 2017 Mario Bijelic, Ryui Kaneko, Claudius Gros, Roser Valentí

We investigate the competition between charge-density-wave (CDW) states and a Coulomb interaction-driven topological Mott insulator (TMI) in the honeycomb extended Hubbard model.

Strongly Correlated Electrons

Charge orders in organic charge-transfer salts

no code implementations24 May 2017 Ryui Kaneko, Luca F. Tocchio, Roser Valentí, Federico Becca

Motivated by recent experimental suggestions of charge-order-driven ferroelectricity in organic charge-transfer salts, such as $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Cl, we investigate magnetic and charge-ordered phases that emerge in an extended two-orbital Hubbard model on the anisotropic triangular lattice at $3/4$ filling.

Strongly Correlated Electrons Materials Science

Emergent lattices with geometrical frustration in doped extended Hubbard models

1 code implementation21 Jun 2016 Ryui Kaneko, Luca F. Tocchio, Roser Valentí, Claudius Gros

For this purpose we investigate the phase diagram of doped extended Hubbard models on two lattices: (i) the honeycomb lattice with on-site $U$ and nearest-neighbor $V$ Coulomb interactions at $3/4$ filling ($n=3/2$) and (ii) the triangular lattice with on-site $U$, nearest-neighbor $V$, and next-nearest-neighbor $V'$ Coulomb interactions at $3/8$ filling ($n=3/4$).

Strongly Correlated Electrons

Spontaneous symmetry breaking in correlated wave functions

1 code implementation29 Oct 2015 Ryui Kaneko, Luca F. Tocchio, Roser Valentí, Federico Becca, Claudius Gros

We show that Jastrow-Slater wave functions, in which a density-density Jastrow factor is applied onto an uncorrelated fermionic state, may possess long-range order even when all symmetries are preserved in the wave function.

Strongly Correlated Electrons

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