Search Results - "Aligia, Armando A."

Spectral evolution of the SU(4) Kondo effect from the single impurity to the two-dimensional limit by Lobos, Alejandro M., Romero, Marcelo, Aligia, Armando A.

“…We describe the evolution of the SU(4) Kondo effect as the number of magnetic centers increases from one impurity to the two-dimensional (2D) lattice. We…”
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Unveiling a crystalline topological insulator in a Weyl semimetal with time-reversal symmetry by Arrachea, Liliana, Aligia, Armando A.

“…We consider a natural generalization of the lattice model for a periodic array of two layers, A and B, of spinless electrons proposed by Fu [Phys. Rev. Lett…”
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Antiferromagnetism and ferromagnetism in layered 1T-CrSe2 with V and Ti replacements by Freitas, Daniele-Cristina, Nunez, Matias, Strobel, Pierre, Sulpice, André, Weht, Ruben, A. Aligia, Armando, Nunez-Regueiro, Manuel

“…We have studied the effect of substitution of Cr in metastable 1T -CrSe2 by Ti and V on its structural and magnetic properties. The structural transitions…”
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Topological quantum phase transition of nickelocene on Cu(100) by Blesio, Germán G., Žitko, Rok, Manuel, Luis O., Aligia, Armando A.

“…Local quantum phase transitions driven by Kondo correlations have been theoretically proposed in several magnetic nanosystems; however, clear experimental…”
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Self-consistent hybridization expansions for static properties of the Anderson impurity model by Hamad, Ignacio J., Roura-Bas, Pablo, Aligia, Armando A., Anda, Enrique V.

“…Building an effective Hamiltonian utilizing a projector‐operator procedure, we derive an approximation based on a self‐consistent hybridization expansion to…”
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Hybridization of impurity states with the Shockley surface band versus bulk states by BARRAL, Maria Andrea, LLOIS, Ana Maria, ALIGIA, Armando A

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Orbital Kondo effect in V-doped 1T-CrSe2 by Nunez, Matias, Freitas, Daniele-Cristina, Gay, Frédéric, Marcus, Jacques, Strobel, Pierre, A. Aligia, Armando, Nunez-Regueiro, Manuel

“…We have studied the resistance of 1T -CrSe2, as the Cr atoms are substituted by V or Ti. The V replacement leads to a logarithmic increase in the resistance as…”
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Interactions Enable Thouless Pumping in a Nonsliding Lattice by Viebahn, Konrad, Walter, Anne-Sophie, Bertok, Eric, Zhu, Zijie, Gächter, Marius, Aligia, Armando A., Heidrich-Meisner, Fabian, Esslinger, Tilman

“…A topological “Thouless” pump represents the quantized motion of particles in response to a slow, cyclic modulation of external control parameters. The…”
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Topological invariants based on generalized position operators and application to the interacting Rice-Mele model by Aligia, Armando A

“…Phys. Rev. B 107, 075153 (2023) We discuss different properties and the ability of several topological invariants based on position operators to identify phase…”
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Singlet Orbital Ordering in Bilayer Sr 3 Cr 2 O 7 by Jeanneau, Justin, Toulemonde, Pierre, Remenyi, Gyorgy, Sulpice, André, Colin, Claire, Nassif, Vivian, Suard, Emmanuelle, Salas Colera, Eduardo, Castro, Germán R., Gay, Frederic, Urdaniz, Corina, Weht, Ruben, Fevrier, Clement, Ralko, Arnaud, Lacroix, Claudine, Aligia, Armando A., Núñez-Regueiro, Manuel

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Anisotropy-driven topological quantum phase transition in magnetic impurities by Blesio, Germán G, Manuel, Luis O, Aligia, Armando A

“…A few years ago, a topological quantum phase transition (TQPT) has been found in Anderson and Kondo 2-channel spin-1 impurity models that include a hard-axis…”
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Effective one-band models for the 1D cuprate Ba$_{2-x}$Sr$_x$CuO$_{3+\delta} by Feiguin, Adrian E, Helman, Christian, Aligia, Armando A

“…Phys. Rev. B 108, 075125 (2023) We consider a multiband Hubbard model $H_m$ for Cu and O orbitals in Ba$_{2-x}$Sr$_x$CuO$_{3+\delta}$ similar to the tree-band…”
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Singlet Orbital Ordering in Bilayer Sr_{3}Cr_{2}O_{7} by Jeanneau, Justin, Toulemonde, Pierre, Remenyi, Gyorgy, Sulpice, André, Colin, Claire, Nassif, Vivian, Suard, Emmanuelle, Salas Colera, Eduardo, Castro, Germán R, Gay, Frederic, Urdaniz, Corina, Weht, Ruben, Fevrier, Clement, Ralko, Arnaud, Lacroix, Claudine, Aligia, Armando A, Núñez-Regueiro, Manuel

“…We perform an extensive study of Sr_{3}Cr_{2}O_{7}, the n=2 member of the Ruddlesden-Popper Sr_{n+1}Cr_{n}O_{3n+1} system. An antiferromagnetic ordering is…”
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Exact analytical solution of a time-reversal-invariant topological superconducting wire by Aligia, Armando A, Camjayi, Alberto

“…Phys. Rev. B 100, 115413 (2019) We consider a model proposed before for a time-reversal-invariant topological superconductor (TRITOPS) which contains a hopping…”
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Topological phases of strongly-interacting time-reversal invariant topological superconducting chains under a magnetic field by Chinellato, Leandro M, Gazza, Claudio J, Lobos, Alejandro M, Aligia, Armando A

“…Using the density-matrix renormalization group, we determine the different topological phases and low-energy excitations of a time-reversal invariant…”
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Thermoelectric properties of a double quantum dot out of equilibrium in Kondo and intermediate valence regimes by Daroca, Diego Pérez, Roura-Bas, Pablo, Aligia, Armando A

“…Phys. Rev. B 108 (2023) 155117 We study a system composed of two quantum dots connected in series between two leads at different temperatures, in the limit of…”
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Charge and spin gaps of the ionic Hubbard model with density-dependent hopping by Segura, Oscar A. Moreno, Hallberg, Karen, Aligia, Armando A

“…We calculate the charge gap $\Delta E_C$ and the spin gap $\Delta E_S$ of the ionic Hubbard chain including electron-hole symmetric density-dependent hopping…”
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Interactions enable Thouless pumping in a nonsliding lattice by Viebahn, Konrad, Walter, Anne-Sophie, Bertok, Eric, Zhu, Zijie, Gächter, Marius, Aligia, Armando A, Heidrich-Meisner, Fabian, Esslinger, Tilman

“…Physical Review X 14, 021049 (2024) A topological 'Thouless' pump represents the quantised motion of particles in response to a slow, cyclic modulation of…”
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Phase diagram of a model for topological superconducting wires by Daroca, Diego Pérez, Aligia, Armando A

“…Phys. Rev. B 104, 115125 (2021) We calculate the phase diagram of a model for topological superconducting wires with local s-wave pairing, spin-orbit coupling…”
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Tomography of zero-energy end modes in topological superconducting wires by Aligia, Armando A, Daroca, Diego Pérez, Arrachea, Liliana

“…Phys. Rev. Lett. 125, 256801 (2020) We characterize the Majorana zero modes in topological hybrid superconductor-semiconductor wires with spin-orbit coupling…”
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