تقرير
Electrically controlled quantum transition to an anomalous metal in 2D
| العنوان: | Electrically controlled quantum transition to an anomalous metal in 2D |
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| المؤلفون: | Halder, Soumyadip, Garg, Mona, Gawande, Shreekant, Mehta, Nikhlesh Singh, Kumari, Anamika, Chakraverty, Suvankar, Kumar, Sanjeev, Sheet, Goutam |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | The mechanism through which superconductivity is destroyed upon controlled disordering often holds the key to understanding the mechanism of emergence of superconductivity. Here we demonstrate an $in$-$situ$ mechanism to control the fraction of disorder in a 2D superconductor. By controlling an electric field V$_G$, we created an assembly of segregated superconducting nano-islands and varied the inter-island distance to accomplish a quantum phase transition from a superconducting phase to a strange quantum anomalous metallic (QAM) phase at LaVO$_3$/SrTiO$_3$ interfaces. In the QAM phase, the resistivity dropped below a critical temperature (T$_{CM}$) as if the system was approaching superconductivity, and then saturated, indicating the destruction of global phase coherence and the emergence of a phase where metal-like transport of Bosons (a Bose metal) becomes a possibility. The unprecedented control over the island size is obtained through the control of nanometer scale ferroelectric domains formed in the SrTiO$_3$ side of the interface due to a low-temperature structural phase transition. Comment: To be published in ACS Applied Electronic Materials |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1021/acsaelm.3c00624 |
| URL الوصول: | http://arxiv.org/abs/2309.08292 |
| رقم الأكسشن: | edsarx.2309.08292 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1021/acsaelm.3c00624 |
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