Table · dataset · 2022
Data for Fermi surface transformation at the pseudogap critical point of a cuprate superconductor
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The nature of the pseudogap phase remains a major puzzle in our understanding of cuprate high-temperature superconductivity.
Description
Whether or not this metallic phase is defined by any of the reported broken symmetries, the topology of its Fermi surface remains a fundamental open question. Here we use angle-dependent magnetoresistance (ADMR) to measure the Fermi surface of the La1.6–xNd0.4SrxCuO4 cuprate.
Outside the pseudogap phase, we fit the ADMR data and extract a Fermi surface geometry that is in excellent agreement with angle-resolved photoemission data. Within the pseudogap phase, the ADMR is qualitatively different, revealing a transformation of the Fermi surface. We can rule out changes in the quasiparticle lifetime as the sole cause of this transformation.
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We find that our data are most consistent with a pseudogap Fermi surface that consists of small, nodal hole pockets, thereby accounting for the drop in carrier density across the pseudogap transition found in several cuprates.<br><br>The archive contains the experimental data from the following figures: Figure 1c Figure 1d Figure S3 Data are listed in the archive as follows Fig??_HxxTyyphizz.dat where ?? = the figure number, xx = the applied magnetic field value in Tesla, yy = the sample temperature in kelvin, and zz = the azimuthal angle in degrees.
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Where it is published
- DOI doi.org/10.82444/warw.33836011.v1 ↗
DOI / persistent id · from figshare com
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from figshare com
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- Condensed matter physics 74%
Provenance · 1 source records, 19 field assertions
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|---|---|---|---|
| figshare | oai:figshare.com:article/33836011 | 10 d ago | JSON v1 |
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