Disorder induced stripes in d-wave superconductors
Stripe phases are observed experimentally in several copper-based high- T _c superconductors near 1/8 hole doping. However, the specific characteristics may vary depending on the degree of dopant disorder and the presence or absence of a low-temperature tetragonal phase. On the basis of a Hartree–Fo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/7/073049 |
| _version_ | 1797751357276422144 |
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| author | Markus Schmid Florian Loder Arno P Kampf Thilo Kopp |
| author_facet | Markus Schmid Florian Loder Arno P Kampf Thilo Kopp |
| author_sort | Markus Schmid |
| collection | DOAJ |
| description | Stripe phases are observed experimentally in several copper-based high- T _c superconductors near 1/8 hole doping. However, the specific characteristics may vary depending on the degree of dopant disorder and the presence or absence of a low-temperature tetragonal phase. On the basis of a Hartree–Fock decoupling scheme for the t – J model, we discuss the diverse behavior of stripe phases. In particular, the effect of inhomogeneities is investigated in two distinctly different parameter regimes which are characterized by the strength of the interaction. We observe that small concentrations of impurities or vortices pin the unidirectional density waves, and dopant disorder is capable of stabilizing a stripe phase in parameter regimes where homogeneous phases are typically favored in clean systems. The momentum-space results exhibit universal features for all coexisting density-wave solutions, nearly unchanged even in strongly disordered systems. These coexisting solutions feature generically a full energy gap and a particle–hole asymmetry in the density of states. |
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| id | doaj.art-1fe75692ba3c480db7a1e6e537265d0a |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:48:16Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-1fe75692ba3c480db7a1e6e537265d0a2023-08-08T11:27:40ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115707304910.1088/1367-2630/15/7/073049Disorder induced stripes in d-wave superconductorsMarkus Schmid0Florian Loder1Arno P Kampf2Thilo Kopp3Center for Electronic Correlations and Magnetism, Theoretical Physics III, Institute of Physics, University of Augsburg , D-86135 Augsburg, GermanyCenter for Electronic Correlations and Magnetism, Theoretical Physics III, Institute of Physics, University of Augsburg , D-86135 Augsburg, Germany; Center for Electronic Correlations and Magnetism, Experimental Physics VI, Institute of Physics, University of Augsburg , D-86135 Augsburg, GermanyCenter for Electronic Correlations and Magnetism, Theoretical Physics III, Institute of Physics, University of Augsburg , D-86135 Augsburg, GermanyCenter for Electronic Correlations and Magnetism, Experimental Physics VI, Institute of Physics, University of Augsburg , D-86135 Augsburg, GermanyStripe phases are observed experimentally in several copper-based high- T _c superconductors near 1/8 hole doping. However, the specific characteristics may vary depending on the degree of dopant disorder and the presence or absence of a low-temperature tetragonal phase. On the basis of a Hartree–Fock decoupling scheme for the t – J model, we discuss the diverse behavior of stripe phases. In particular, the effect of inhomogeneities is investigated in two distinctly different parameter regimes which are characterized by the strength of the interaction. We observe that small concentrations of impurities or vortices pin the unidirectional density waves, and dopant disorder is capable of stabilizing a stripe phase in parameter regimes where homogeneous phases are typically favored in clean systems. The momentum-space results exhibit universal features for all coexisting density-wave solutions, nearly unchanged even in strongly disordered systems. These coexisting solutions feature generically a full energy gap and a particle–hole asymmetry in the density of states.https://doi.org/10.1088/1367-2630/15/7/073049 |
| spellingShingle | Markus Schmid Florian Loder Arno P Kampf Thilo Kopp Disorder induced stripes in d-wave superconductors New Journal of Physics |
| title | Disorder induced stripes in d-wave superconductors |
| title_full | Disorder induced stripes in d-wave superconductors |
| title_fullStr | Disorder induced stripes in d-wave superconductors |
| title_full_unstemmed | Disorder induced stripes in d-wave superconductors |
| title_short | Disorder induced stripes in d-wave superconductors |
| title_sort | disorder induced stripes in d wave superconductors |
| url | https://doi.org/10.1088/1367-2630/15/7/073049 |
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