Effect of disorder on the strain-tuned charge density wave multicriticality in Pd$_x$ErTe$_3$
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
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2024
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| _version_ | 1866916545820622848 |
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| author | Singh, Anisha G. Krogstad, Matthew Bachmann, Maja D. Thompson, Paul Rosenkranz, Stephan Osborn, Ray Fang, Alan Kapitulnik, Aharon Kim, Jong Woo Ryan, Philip J. Kivelson, Steven A. Fisher, Ian R. |
| author_facet | Singh, Anisha G. Krogstad, Matthew Bachmann, Maja D. Thompson, Paul Rosenkranz, Stephan Osborn, Ray Fang, Alan Kapitulnik, Aharon Kim, Jong Woo Ryan, Philip J. Kivelson, Steven A. Fisher, Ian R. |
| contents | We explore, through a combination of x-ray diffraction and elastoresistivity measurements, the effect of disorder on the strain-tuned charge density wave and associated multicriticality in Pd$_x$ErTe$_3$ (x = 0, 0.01, 0.02 and 0.026). We focus particularly on the behavior near the strain-tuned bicritical point that occurs in pristine ErTe$_3$ (x=0). Our study reveals that while Pd intercalation somewhat broadens the signatures of the CDW phase transitions, the line of first-order transitions at which the CDW reorients as a function of applied strain persists in the presence of disorder and still seemingly terminates at a critical point. The critical point occurs at a lower temperature and a lower strain compared to pristine ErTe$_3$. Similarly, the nematic elastoresistance of Pd$_x$ErTe$_3$, though suppressed in magnitude and broadened relative to that of ErTe$_3$, has a markedly more symmetric response around the critical point. These observations point to disorder driving a reduction in the system's electronic orthorhombicity even while the material remains irrevocably orthorhombic due to the presence of a glide plane in the crystal structure. Disorder, it would appear, reinforces the emergence of a "pseudo-tetragonal" electronic response in this fundamentally orthorhombic material. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_20706 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Effect of disorder on the strain-tuned charge density wave multicriticality in Pd$_x$ErTe$_3$ Singh, Anisha G. Krogstad, Matthew Bachmann, Maja D. Thompson, Paul Rosenkranz, Stephan Osborn, Ray Fang, Alan Kapitulnik, Aharon Kim, Jong Woo Ryan, Philip J. Kivelson, Steven A. Fisher, Ian R. Strongly Correlated Electrons Materials Science We explore, through a combination of x-ray diffraction and elastoresistivity measurements, the effect of disorder on the strain-tuned charge density wave and associated multicriticality in Pd$_x$ErTe$_3$ (x = 0, 0.01, 0.02 and 0.026). We focus particularly on the behavior near the strain-tuned bicritical point that occurs in pristine ErTe$_3$ (x=0). Our study reveals that while Pd intercalation somewhat broadens the signatures of the CDW phase transitions, the line of first-order transitions at which the CDW reorients as a function of applied strain persists in the presence of disorder and still seemingly terminates at a critical point. The critical point occurs at a lower temperature and a lower strain compared to pristine ErTe$_3$. Similarly, the nematic elastoresistance of Pd$_x$ErTe$_3$, though suppressed in magnitude and broadened relative to that of ErTe$_3$, has a markedly more symmetric response around the critical point. These observations point to disorder driving a reduction in the system's electronic orthorhombicity even while the material remains irrevocably orthorhombic due to the presence of a glide plane in the crystal structure. Disorder, it would appear, reinforces the emergence of a "pseudo-tetragonal" electronic response in this fundamentally orthorhombic material. |
| title | Effect of disorder on the strain-tuned charge density wave multicriticality in Pd$_x$ErTe$_3$ |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2412.20706 |