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Inhomogeneity of charge-density-wave order and quenched disorder in a high-Tc superconductorстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 октября 2015 г.
- Авторы: Campi G., Bianconi A., Poccia N., Bianconi G., Barba L., Arrighetti G., Innocenti D., Karpinski J., Zhigadlo ND, Kazakov SM, Burghammer M., Zimmermann M.v., Sprung M., Ricci A.
- Журнал: Nature
- Том: 525
- Номер: 7569
- Год издания: 2015
- Издательство: Nature Publishing Group
- Местоположение издательства: United Kingdom
- Первая страница: 359
- Последняя страница: 362
- DOI: 10.1038/nature14987
- Аннотация: It has recently been established that the high-transition-temperature (high-Tc) superconducting state coexists with short-range charge-density-wave order and quenched disorder arising from dopants and strain. This complex, multiscale phase separation invites the development of theories of high-temperature superconductivity that include complexity. The nature of the spatial interplay between charge and dopant order that provides a basis for nanoscale phase separation remains a key open question, because experiments have yet to probe the unknown spatial distribution at both the nanoscale and mesoscale (between atomic and macroscopic scale). Here we report micro X-ray diffraction imaging of the spatial distribution of both short-range charge-density-wave ‘puddles’ (domains with only a few wavelengths) and quenched disorder in HgBa2CuO4+y, the single-layer cuprate with the highest Tc, 95 kelvin. We found that the charge-density-wave puddles, like the steam bubbles in boiling water, have a fat-tailed size distribution that is typical of selforganization near a critical point19. However, the quenched disorder, which arises from oxygen interstitials, has a distribution that is contrary to the usually assumed random, uncorrelated distribution. The interstitial-oxygen-rich domains are spatially anticorrelated with the charge-density-wave domains, because higher doping does not favour the stripy charge-density-wave puddles, leading to a complex emergent geometry of the spatial landscape for superconductivity.
- Добавил в систему: Казаков Сергей Михайлович