Unknown

Dataset Information

0

Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe.


ABSTRACT: The coexistence and competition between superconductivity and electronic orders, such as spin or charge density waves, have been a central issue in high transition-temperature (Tc) superconductors. Unlike other iron-based superconductors, FeSe exhibits nematic ordering without magnetism whose relationship with its superconductivity remains unclear. Moreover, a pressure-induced fourfold increase of Tc has been reported, which poses a profound mystery. Here we report high-pressure magnetotransport measurements in FeSe up to ?15?GPa, which uncover the dome shape of magnetic phase superseding the nematic order. Above ?6?GPa the sudden enhancement of superconductivity (Tc?38.3?K) accompanies a suppression of magnetic order, demonstrating their competing nature with very similar energy scales. Above the magnetic dome, we find anomalous transport properties suggesting a possible pseudogap formation, whereas linear-in-temperature resistivity is observed in the normal states of the high-Tc phase above 6?GPa. The obtained phase diagram highlights unique features of FeSe among iron-based superconductors, but bears some resemblance to that of high-Tc cuprates.

SUBMITTER: Sun JP 

PROVIDER: S-EPMC4960320 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature

altmetric image

Publications

Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe.

Sun J P JP   Matsuura K K   Ye G Z GZ   Mizukami Y Y   Shimozawa M M   Matsubayashi K K   Yamashita M M   Watashige T T   Kasahara S S   Matsuda Y Y   Yan J-Q JQ   Sales B C BC   Uwatoko Y Y   Cheng J-G JG   Shibauchi T T  

Nature communications 20160719


The coexistence and competition between superconductivity and electronic orders, such as spin or charge density waves, have been a central issue in high transition-temperature (Tc) superconductors. Unlike other iron-based superconductors, FeSe exhibits nematic ordering without magnetism whose relationship with its superconductivity remains unclear. Moreover, a pressure-induced fourfold increase of Tc has been reported, which poses a profound mystery. Here we report high-pressure magnetotransport  ...[more]

Similar Datasets

| S-EPMC4381328 | biostudies-literature
| S-EPMC8505662 | biostudies-literature
| S-EPMC8285973 | biostudies-literature
| S-EPMC4525151 | biostudies-literature
| S-EPMC6173526 | biostudies-literature
| S-EPMC5840431 | biostudies-literature
| S-EPMC8291430 | biostudies-literature
| S-EPMC4637863 | biostudies-literature
| S-EPMC10901869 | biostudies-literature
| S-EPMC6900540 | biostudies-literature