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Superconductivity from spoiling magnetism in the Kondo lattice model
- Source :
- Physical review. B, Condensed matter and materials physics 90 (2014). doi:10.1103/PhysRevB.90.205113, info:cnr-pdr/source/autori:Asadzadeh, Mohammad Zhian; Fabrizio, Michele; Becca, Federico/titolo:Superconductivity from spoiling magnetism in the Kondo lattice model/doi:10.1103%2FPhysRevB.90.205113/rivista:Physical review. B, Condensed matter and materials physics/anno:2014/pagina_da:/pagina_a:/intervallo_pagine:/volume:90
- Publication Year :
- 2014
- Publisher :
- arXiv, 2014.
-
Abstract
- We find evidence that superconductivity intrudes into the paramagnetic-to-magnetic transition of the Kondo lattice model if magnetic frustration is added. Specifically, we study by variational method the model on a square lattice in the presence of both nearest- ($t$) and next-nearest-neighbor ($t^\prime$) hopping of the conduction electrons. We find that when $t^\prime/t$ is finite a $d$-wave superconducting dome emerges between the magnetic and paramagnetic metal phases and close to the compensated regime, i.e., the number of conduction electrons equal to the number of localized spin-1/2 moments. Superconductivity is further strengthened by a direct antiferromagnetic exchange between the localized moments, to such an extent that we even observe coexistence with magnetic order.
- Subjects :
- Physics
Superconductivity
Condensed matter physics
Strongly Correlated Electrons (cond-mat.str-el)
Magnetism
FOS: Physical sciences
Electron
Condensed Matter Physics
Square lattice
Electronic, Optical and Magnetic Materials
Paramagnetism
Condensed Matter - Strongly Correlated Electrons
HEAVY FERMIONS
Antiferromagnetism
Strongly correlated material
Condensed Matter::Strongly Correlated Electrons
Lattice model (physics)
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Physical review. B, Condensed matter and materials physics 90 (2014). doi:10.1103/PhysRevB.90.205113, info:cnr-pdr/source/autori:Asadzadeh, Mohammad Zhian; Fabrizio, Michele; Becca, Federico/titolo:Superconductivity from spoiling magnetism in the Kondo lattice model/doi:10.1103%2FPhysRevB.90.205113/rivista:Physical review. B, Condensed matter and materials physics/anno:2014/pagina_da:/pagina_a:/intervallo_pagine:/volume:90
- Accession number :
- edsair.doi.dedup.....4fc2c32875a66f04e8b3edf9fa8321ff
- Full Text :
- https://doi.org/10.48550/arxiv.1403.2631