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http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5953| Title: | Effect of doping on the pseudogap behaviour and the related terahertz modes in the hybrid chain-ladder compound, Sr14Cu24O41 |
| Authors: | Hazra, Soumitra BAG, RABINDRANATH SINGH, SURJEET Kini, Rajeev N. Dept. of Physics |
| Keywords: | Terahertz spectroscopy Spin-ladder compounds Cuprates Charge density wave systems Hole pairing Collective modes 2021-JUN-WEEK3 TOC-JUN-2021 2021 |
| Issue Date: | Aug-2021 |
| Publisher: | Elsevier B.V. |
| Citation: | Physics Letters A, 408, 127489. |
| Abstract: | Using Terahertz (THz) spectroscopy, we report the observation of a pseudogap behaviour in the hybrid chain-ladder compound Sr14Cu24O41 (SCO). This is possibly due to the ordered arrangement of hole pairs in SCO's ladder plane, below the transition temperature, . Several optical modes in the THz frequency range between 60 cm−1 and 90 cm−1, similar to those reported earlier, was also observed. We find that the pseudogap behaviour and the THz-active modes are strongly affected by doping with 5% Co and 0.25% Al, but the effect of 1% Co is not as much. These differences are discussed in terms of the location of these dopants in the chain and ladder substructures. |
| URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/5953 https://doi.org/10.1016/j.physleta.2021.127489 |
| ISSN: | 0375-9601 |
| Appears in Collections: | JOURNAL ARTICLES |
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