Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates
While charge density wave (CDW) instabilities are ubiquitous to superconducting cuprates, the different ordering wave vectors in various cuprate families have hampered a unified description of the CDW formation mechanism. Here, we investigate the temperature dependence of the low-energy phonons in t...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2018-01-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.8.011008 |
| _version_ | 1818967407082864640 |
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| author | H. Miao D. Ishikawa R. Heid M. Le Tacon G. Fabbris D. Meyers G. D. Gu A. Q. R. Baron M. P. M. Dean |
| author_facet | H. Miao D. Ishikawa R. Heid M. Le Tacon G. Fabbris D. Meyers G. D. Gu A. Q. R. Baron M. P. M. Dean |
| author_sort | H. Miao |
| collection | DOAJ |
| description | While charge density wave (CDW) instabilities are ubiquitous to superconducting cuprates, the different ordering wave vectors in various cuprate families have hampered a unified description of the CDW formation mechanism. Here, we investigate the temperature dependence of the low-energy phonons in the canonical CDW-ordered cuprate La_{1.875}Ba_{0.125}CuO_{4}. We discover that the phonon softening wave vector associated with CDW correlations becomes temperature dependent in the high-temperature precursor phase and changes from a wave vector of 0.238 reciprocal lattice units (r.l.u.) below the ordering transition temperature to 0.3 r.l.u. at 300 K. This high-temperature behavior shows that “214”-type cuprates can host CDW correlations at a similar wave vector to previously reported CDW correlations in non-214-type cuprates such as YBa_{2}Cu_{3}O_{6+δ}. This indicates that cuprate CDWs may arise from the same underlying instability despite their apparently different low-temperature ordering wave vectors. |
| first_indexed | 2024-12-20T13:48:18Z |
| format | Article |
| id | doaj.art-d5e1c6e3202141bcb5f93f504001e9a5 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-12-20T13:48:18Z |
| publishDate | 2018-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-d5e1c6e3202141bcb5f93f504001e9a52022-12-21T19:38:36ZengAmerican Physical SocietyPhysical Review X2160-33082018-01-018101100810.1103/PhysRevX.8.011008Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in CupratesH. MiaoD. IshikawaR. HeidM. Le TaconG. FabbrisD. MeyersG. D. GuA. Q. R. BaronM. P. M. DeanWhile charge density wave (CDW) instabilities are ubiquitous to superconducting cuprates, the different ordering wave vectors in various cuprate families have hampered a unified description of the CDW formation mechanism. Here, we investigate the temperature dependence of the low-energy phonons in the canonical CDW-ordered cuprate La_{1.875}Ba_{0.125}CuO_{4}. We discover that the phonon softening wave vector associated with CDW correlations becomes temperature dependent in the high-temperature precursor phase and changes from a wave vector of 0.238 reciprocal lattice units (r.l.u.) below the ordering transition temperature to 0.3 r.l.u. at 300 K. This high-temperature behavior shows that “214”-type cuprates can host CDW correlations at a similar wave vector to previously reported CDW correlations in non-214-type cuprates such as YBa_{2}Cu_{3}O_{6+δ}. This indicates that cuprate CDWs may arise from the same underlying instability despite their apparently different low-temperature ordering wave vectors.http://doi.org/10.1103/PhysRevX.8.011008 |
| spellingShingle | H. Miao D. Ishikawa R. Heid M. Le Tacon G. Fabbris D. Meyers G. D. Gu A. Q. R. Baron M. P. M. Dean Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates Physical Review X |
| title | Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates |
| title_full | Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates |
| title_fullStr | Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates |
| title_full_unstemmed | Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates |
| title_short | Incommensurate Phonon Anomaly and the Nature of Charge Density Waves in Cuprates |
| title_sort | incommensurate phonon anomaly and the nature of charge density waves in cuprates |
| url | http://doi.org/10.1103/PhysRevX.8.011008 |
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