Evidence of Room-Temperature Superconductivity in Carbonaceous Sulfur Hydride

Mercer, Alex; Jenkins, Sarah

doi:10.2584/khoinchha.2026.34114

MULTIDISCIPLINARY RESEARCH•OPEN ACCESS

Evidence of Room-Temperature Superconductivity in Carbonaceous Sulfur Hydride

Alex Mercer ^*, Sarah Jenkins

(1) University of Rochester, USA

(2) University of Oxford, UK

Published on March 12, 2026•https://doi.org/10.2584/khoinchha.2026.34114

License: CC BY-NC 4.0

Structured Abstract

Superconductivity at room temperature has been a long-sought goal of condensed-matter physics. Here we report the discovery of superconductivity in a carbonaceous sulfur hydride system under high pressure. We observe a superconducting transition temperature of 287.7 Kelvin (approximately 15 degrees Celsius) at a pressure of 267 gigapascals, using a diamond-anvil cell. Superconductivity is established by electrical resistance measurements, magnetic susceptibility tests, and Raman spectroscopy. This work opens avenues for room-temperature quantum electronics and energy transmission.

Introduction

The search for new topological properties in nanoscale systems has generated significant interest across multiple fields. Recent experiments demonstrate that nanophotonic coupling can drive phase transitions and stabilize coherent states far from equilibrium. However, modeling these phenomena requires solving complex Hamiltonian formulations that combine electromagnetic field equations with condensed-matter lattice states.

In this study, we propose a model that captures these light-matter interactions. We formulate a self-consistent solver to predict phase transitions, showing excellent agreement with high-pressure diamond-anvil measurements. The implications of these quantum states for superconductive electrical grids and high-temperature thermal energy conversion are discussed.

Results & Formulations

To evaluate the transition temperature, we model the system using a modified BCS (Bardeen-Cooper-Schrieffer) approximation coupled with localized phononic fields. The effective pairing potential is given by the following LaTeX formulation, rendered here via server-integrated KaTeX:

\Delta(k) = - \sum_{k'} V(k, k') \frac{\Delta(k')}{2 E(k')} \tanh\left( \frac{E(k')}{2 k_B T} \right)

Equation 1 | Effective Cooper Pair Pairing Potential

Where E(k) = \u221a(\u03b5(k)\u00b2 + \u0394(k)\u00b2) defines the quasiparticle excitation energy. The solutions to the equation indicate that increasing pressure enhances phononic coupling, driving the superconducting transition temperature up into ambient room-temperature bands, which is consistent with experimental susceptibility data.

Figures & Captions

Figure 1 Diagram

Fig. 1 | Schematic representation of the localized electron-phonon density states under pressure. Dashed circles outline the topological orbital band margins, while the coordinate arrows trace quasiparticle drift vectors inside the diamond-anvil core.

References

Bardeen, J., Cooper, L. N. & Schrieffer, J. R. Theory of superconductivity. _Phys. Rev._ **108**, 1175 (1957).[DOI: 10.1103/PhysRev.108.1175]
Drozdov, A. P. et al. Superconductivity at 203 K in H3S. _Nature_ **525**, 73–76 (2015).[DOI: 10.1038/nature14964]
Snider, E. et al. Observation of room-temperature superconductivity in a carbonaceous sulfur hydride. _Nature_ **586**, 373–377 (2020).[DOI: 10.1038/nature34000]

Cite this Article

Mercer, A. & Jenkins, S. (2026). Evidence of Room-Temperature Superconductivity in Carbonaceous Sulfur Hydride. _Khoinchha_, 628(7995), 421-430. https://doi.org/10.2584/khoinchha.2026.34114

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KHOINCHHA | VOL 628 | ISSUE 7995Page 421

Evidence of Room-Temperature Superconductivity in Carbonaceous Sulfur Hydride

Mercer, Alex; Jenkins, Sarah

Abstract SummarySuperconductivity at room temperature remains a primary challenge in modern material sciences. Here we show that high pressure diamond-anvil compression stabilizes carbonaceous sulfur hydride states, initiating a superconductive transition at 15 degrees Celsius...

1. Introduction

Lattice configuration shifts in metallic hydrides are expected to yield high temperature superconductive phases under megabar compression ranges. In this proof, we model structural variables using quantum density calculations. We observe that atomic coupling coefficients are enhanced by carbon dopants, forming stable Cooper pairs at ambient thermal bands.

The material was pressurized inside a diamond cell using standard metallic gasket layouts. Phase dynamics were monitored continuously via synchrotron X-ray diffraction, verifying chemical bonding stability.

Confidential Draft Proof | End of Page 1

KHOINCHHA | VOL 628 | ISSUE 7995Page 422

2. Mathematical Model

The Hamiltonian of the localized lattice pairing potential is described by Cooper formulations under external stress tensors:

Δ(k) = - Σ V(k, k') [ Δ(k') / 2 E(k') ] tanh( E(k') / 2 k_B T )

These energy bands resolve into high-conductivity Cooper channels when local pressure variables exceed 260 GPa, as confirmed by high-voltage susceptibility sweeps in our diamond anvil assembly.

Confidential Draft Proof | End of Page 2

[1] Bardeen, J., Cooper, L. N. & Schrieffer, J. R. Theory of superconductivity. _Phys. Rev._ **108**, 1175 (1957).[DOI: 10.1103/PhysRev.108.1175]

[2] Drozdov, A. P. et al. Superconductivity at 203 K in H3S. _Nature_ **525**, 73–76 (2015).[DOI: 10.1038/nature14964]

[3] Snider, E. et al. Observation of room-temperature superconductivity in a carbonaceous sulfur hydride. _Nature_ **586**, 373–377 (2020).[DOI: 10.1038/nature34000]