Strong particle-hole asymmetry of charge instabilities in doped Mott insulators
We study possible charge instabilities in doped Mott insulators by employing the two-dimensional t - J model with a positive value of the next nearest-neighbor hopping integral $t^{\prime} $ on a square lattice, which is applicable to electron-doped cuprates. Although the d -wave charge density wave...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/16/12/123002 |
| _version_ | 1797751417545424896 |
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| author | Matías Bejas Andrés Greco Hiroyuki Yamase |
| author_facet | Matías Bejas Andrés Greco Hiroyuki Yamase |
| author_sort | Matías Bejas |
| collection | DOAJ |
| description | We study possible charge instabilities in doped Mott insulators by employing the two-dimensional t - J model with a positive value of the next nearest-neighbor hopping integral $t^{\prime} $ on a square lattice, which is applicable to electron-doped cuprates. Although the d -wave charge density wave (flux phase) and d -wave Pomeranchuk instability (nematic order) are dominant instabilities for a negative $t^{\prime} $ that corresponds to hole-doped cuprates, we find that those instabilities are strongly suppressed and become relevant only rather close to half filling. Instead, various types of bond orders with modulation vectors close to $(\pi ,\pi )$ are dominant in a moderate doping region. Phase separation is also enhanced, but it can be suppressed substantially by the nearest-neighbor Coulomb repulsion without affecting the aforementioned charge instabilities. |
| first_indexed | 2024-03-12T16:49:13Z |
| format | Article |
| id | doaj.art-0b144c70727e49b1a0e9ccf9cf8676ae |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:49:13Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
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| series | New Journal of Physics |
| spelling | doaj.art-0b144c70727e49b1a0e9ccf9cf8676ae2023-08-08T11:25:28ZengIOP PublishingNew Journal of Physics1367-26302014-01-01161212300210.1088/1367-2630/16/12/123002Strong particle-hole asymmetry of charge instabilities in doped Mott insulatorsMatías Bejas0Andrés Greco1Hiroyuki Yamase2Facultad de Ciencias Exactas, Ingeniería y Agrimensura and Instituto de Física Rosario (UNR-CONICET) , Avenida Pellegrini 250, 2000 Rosario, ArgentinaFacultad de Ciencias Exactas, Ingeniería y Agrimensura and Instituto de Física Rosario (UNR-CONICET) , Avenida Pellegrini 250, 2000 Rosario, ArgentinaNational Institute for Materials Science , Tsukuba 305-0047, Japan; Max Planck Institute for Solid State Research , D-70569 Stuttgart, GermanyWe study possible charge instabilities in doped Mott insulators by employing the two-dimensional t - J model with a positive value of the next nearest-neighbor hopping integral $t^{\prime} $ on a square lattice, which is applicable to electron-doped cuprates. Although the d -wave charge density wave (flux phase) and d -wave Pomeranchuk instability (nematic order) are dominant instabilities for a negative $t^{\prime} $ that corresponds to hole-doped cuprates, we find that those instabilities are strongly suppressed and become relevant only rather close to half filling. Instead, various types of bond orders with modulation vectors close to $(\pi ,\pi )$ are dominant in a moderate doping region. Phase separation is also enhanced, but it can be suppressed substantially by the nearest-neighbor Coulomb repulsion without affecting the aforementioned charge instabilities.https://doi.org/10.1088/1367-2630/16/12/123002electron- and hole-doped cupratespseudogapcharge orders71.10.Hf75.25.Dk74.72.Ek |
| spellingShingle | Matías Bejas Andrés Greco Hiroyuki Yamase Strong particle-hole asymmetry of charge instabilities in doped Mott insulators New Journal of Physics electron- and hole-doped cuprates pseudogap charge orders 71.10.Hf 75.25.Dk 74.72.Ek |
| title | Strong particle-hole asymmetry of charge instabilities in doped Mott insulators |
| title_full | Strong particle-hole asymmetry of charge instabilities in doped Mott insulators |
| title_fullStr | Strong particle-hole asymmetry of charge instabilities in doped Mott insulators |
| title_full_unstemmed | Strong particle-hole asymmetry of charge instabilities in doped Mott insulators |
| title_short | Strong particle-hole asymmetry of charge instabilities in doped Mott insulators |
| title_sort | strong particle hole asymmetry of charge instabilities in doped mott insulators |
| topic | electron- and hole-doped cuprates pseudogap charge orders 71.10.Hf 75.25.Dk 74.72.Ek |
| url | https://doi.org/10.1088/1367-2630/16/12/123002 |
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