Field-Induced Bose-Einstein Condensation of Triplons up to 8 K in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Sr</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Cr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="bold">O</mml:mi><mml:mn>8</mml:mn></mml:msub></mml:math>
Why this work is in the frame
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Bibliographic record
Abstract
Single crystals of the spin dimer system ${\mathrm{Sr}}_{3}{\mathrm{Cr}}_{2}{\mathrm{O}}_{8}$ have been grown for the first time. Magnetization, heat capacity, and magnetocaloric effect data up to 65 T reveal magnetic order between applied fields of ${H}_{c1}\ensuremath{\sim}30.4\text{ }\text{ }\mathrm{T}$ and ${H}_{c2}\ensuremath{\sim}62\text{ }\text{ }\mathrm{T}$. This field-induced order persists up to ${T}_{c}^{\mathrm{max}}\ensuremath{\sim}8\text{ }\text{ }\mathrm{K}$ at $H\ensuremath{\sim}44\text{ }\text{ }\mathrm{T}$, the highest observed in any quantum magnet where ${H}_{c2}$ is experimentally accessible. We fit the temperature-field phase diagram boundary close to ${H}_{c1}$ using the expression ${T}_{c}=A(H\mathrm{\text{\ensuremath{-}}}{H}_{c1}{)}^{\ensuremath{\nu}}$. The exponent $\ensuremath{\nu}=0.65(2)$, obtained at temperatures much smaller than ${T}_{c}^{\mathrm{max}}$, is that of the 3D Bose-Einstein condensate (BEC) universality class. This finding strongly suggests that ${\mathrm{Sr}}_{3}{\mathrm{Cr}}_{2}{\mathrm{O}}_{8}$ is a new realization of a triplon BEC where the universal regimes corresponding to both ${H}_{c1}$ and ${H}_{c2}$ are accessible at $^{4}\mathrm{He}$ temperatures.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.002 |
| Meta-epidemiology (narrow) | 0.003 | 0.005 |
| Meta-epidemiology (broad) | 0.002 | 0.005 |
| Bibliometrics | 0.001 | 0.004 |
| Science and technology studies | 0.003 | 0.002 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.005 | 0.003 |
| Research integrity | 0.003 | 0.005 |
| Insufficient payload (model declined to judge) | 0.149 | 0.005 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it