Abstract
In this paper, we explore the chemical-property phase diagram of the AV3Sb5 family through A-site alloying. We demonstrate full miscibility of the alkali site, highlighting that the three parent compounds are the terminal ends of a single solid solution. Using both polycrystalline and single crystal methods, we map the dependence of the two primary electronic instabilities: (1) the onset of charge-density wave (CDW) order (TCDW) and (2) the onset of superconductivity (Tc) with alkali-site composition. We show continuous trends in both TCDW and Tc, including a region of enhanced CDW stability in K1-xCsxV3Sb5 alloys. Together, our results open new routes for chemical perturbation and exploration of the chemical-property relationships in the class of AV3Sb5 kagome superconductors.
Original language | English |
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Article number | 014801 |
Journal | Physical Review Materials |
Volume | 7 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2023 |
Externally published | Yes |
Funding
This work was supported by the National Science Foundation (NSF) through Enabling Quantum Leap: Convergent Accelerated Discovery Foundries for Quantum Materials Science, Engineering and Information (Q-AMASE-i): Quantum Foundry at UC Santa Barbara (Grant No. DMR-1906325). The research made use of the shared experimental facilities of the NSF Materials Research Science and Engineering Center at UC Santa Barbara (Grant No. DMR- 1720256). The UC Santa Barbara MRSEC is a member of the Materials Research Facilities Network .