# Pressure-Quenched Polar-Clamped (Hg,Re)-1223 Trilayer Cuprate Superlattice: An Experimental Proposal for Ambient-Pressure HighTemperature Superconductivity

Article · Jinyeop Kim

- Archive id: doi:10.5281/zenodo.20504560
- Published: 2026-06-02
- Venue: Zenodo (CERN European Organization for Nuclear Research)
- DOI: https://doi.org/10.5281/zenodo.20504560
- Citations: 0
- Source URL: https://doi.org/10.5281/zenodo.20504560
- Provenance: openalex

## Abstract

Paragraph 1: Introduction and Core Engineering Principles The research proposal titled "Pressure-Quenched Polar-Clamped (Hg,Re)-1223 Trilayer Cuprate Superlattice: An Experimental Proposal for Ambient-Pressure High-Temperature Superconductivity" outlines a comprehensive experimental framework designed to achieve and verify ambient-pressure room-temperature superconductivity. Recognizing that high-temperature superconductivity requires both a large pairing energy scale and robust phase stiffness near 300 K, the author selects the trilayer cuprate system \\text{HgBa}\_2\\text{Ca}\_2\\text{Cu}\_3\\text{O}\_{8+\\delta} (Hg-1223)—the material with the highest verified ambient-pressure T\_c—as the primary host matrix. To overcome the structural and electronic limitations that typically suppress T\_c at ambient pressure, the proposed methodology uniquely integrates four synergistic engineering levers: partial Rhenium (Re) substitution at the mercury site to stabilize the charge reservoir, a ultra-thin \\text{LaAlO}\_3 polar-oxide clamp, a mechanical capping layer using LSAT or \\text{SrTiO}\_3, and a rigorous pressure-quench protocol (PQP). Paragraph 2: Superlattice Structure and Cooperative Mechanisms At the center of this proposal is the exploration of a specific candidate superlattice window defined by the formula \\{\[(\\text{Hg}\_{0.80}\\text{Re}\_{0.20})\\text{Ba}\_2\\text{Ca}\_2\\text{Cu}\_3\\text{O}\_{8+\\delta}\] / \[\\text{LaAlO}\_3\]\_p / \[\\text{LSAT}\]\_q\\}\_n, where p = 1\\text{--}2, q = 2\\text{--}4, and n = 3\\text{--}20 unit cells. The fundamental hypothesis rests on the cooperative interaction of these layers. The \\text{LaAlO}\_3 polar clamp introduces an asymmetric internal electric field that optimizes the hole carrier distribution between the inner and outer \\text{CuO}\_2 planes, which is a major bottleneck in trilayer cuprates. Concurrently, the Re substitution suppresses mercury volatility and stabilizes interstitial oxygen ordering, while the LSAT capping layer applies a permanent mechanical constraint. Finally, the pressure-quench protocol physically locks in the shortened apical-oxygen distance and enhanced interlayer tunneling that are typically achieved only under extreme hydrostatic pressures, effectively maintaining these favorable high-pressure structural traits at ambient pressure. Paragraph 3: Rigorous Verification Protocol and Tiered Success Targets To ensure the scientific validity of any observed anomalies and to meticulously eliminate artifacts such as filamentary conduction, the proposal establishes an uncompromised verification matrix across transport, magnetic, and structural axes. A definitive claim of superconductivity requires the simultaneous fulfillment of six stringent criteria: a reproducible four-terminal resistance drop below the measurement noise floor, critical current (J\_c) validation independent of contact resistance, a clear Meissner effect or diamagnetic shielding in the identical temperature window, evidence of macroscopic quantum phase coherence via Shapiro steps or flux quantization, consistent magnetic field suppression of the transition, and robust statistical replication across independent laboratories. The project adopts a tiered success roadmap, where the baseline tier aims to reproduce the ambient-pressure PQP record of 151 K, the intermediate tiers target zero-resistance above 160–180 K and 220 K, and the ultimate tier seeks to confirm macroscopic phase coherence within a 270–305 K window.

_Abstract reproduced under CC-BY (publisher license, via OpenAlex)._

Topics: [Room-Temperature Superconductivity Claims & Replication](https://space-kitty.com/topics/room-temperature-claims)

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