\/svg>","ionicons-filled--link":"<\/svg>"}) Accessibility Tools Invert colors Monochrome Dark contrast Light contrast Low saturation High saturation Highlight links Highlight headings Screen reader Read mode Content scaling 100% Font size 100% Line height 100% Letter spacing 100% Skip to main content PL The Institute The Institute General information Emploees News Scientific News Gender equality plan Address and contact data Research Research profile List of publications Information in BIP Scientific Council Organizational structure GDPR Events Seminars Current seminars List of seminars Conferences Current conferences Past conferences For students Doctoral school General Information Curriculum Recruitment School Council Doctoral Student Council Teaching Doctoral students Mid-term evaluation For students Master theses Student training Visiting the Institute For employees Institute e-mail Eduroam Publication registry Contact us Address and contact data Important phone numbers and emails PL The Institute The Institute General information Emploees News Scientific News Gender equality plan Address and contact data Research Research profile List of publications Information in BIP Scientific Council Organizational structure GDPR Events Seminars Current seminars List of seminars Conferences Current conferences Past conferences For students Doctoral school General Information Curriculum Recruitment School Council Doctoral Student Council Teaching Doctoral students Mid-term evaluation For students Master theses Student training Visiting the Institute For employees Institute e-mail Eduroam Publication registry Contact us Address and contact data Important phone numbers and emails Events Home Events Current seminars Department of Magnetic Reseach Seminar 13:30, 19-02-27 sala nr 6 (bud. II) Unconventional superconductivity and tuned quantum critical points in the helical AFM compound CrAsprof. Tuson ParkWydział Fizyki i Centrum Materiałów Kwantowych i Nadprzewodnictwa Uniwersytetu Sungkyunkwan w Suwon w KoreiUnconventional superconductivity commonly emerges in proximity to a magnetically ordered phase, raising the possibility that critical spin fluctuations may mediate the formation of superconducting Cooper pairs. In this seminar, we introduce an interesting new example of CrAs, where a double helical antiferromagnetic order is tuned to zero temperature at a projected critical pressure where a dome of superconductivity reaches a maximum Tc. When doped with 0.7% Al, however, the superconductivity is completely detached from tunable quantum critical point in the 0.7% Al-doped CrAs, suggesting that the Cooper pair formation is not mediated by critical magnetic fluctuations. These discoveries, which are very different from other classes of unconventional superconductors, not only point to new understanding of superconductivity in CrAs but also indicate more broadly the power of using multiple non-thermal tuning parameters simultaneously to reveal the intricate relationship between superconductivity and a hidden quantum critical point.
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Unconventional superconductivity commonly emerges in proximity to a magnetically ordered phase, raising the possibility that critical spin fluctuations may mediate the formation of superconducting Cooper pairs. In this seminar, we introduce an interesting new example of CrAs, where a double helical antiferromagnetic order is tuned to zero temperature at a projected critical pressure where a dome of superconductivity reaches a maximum Tc. When doped with 0.7% Al, however, the superconductivity is completely detached from tunable quantum critical point in the 0.7% Al-doped CrAs, suggesting that the Cooper pair formation is not mediated by critical magnetic fluctuations. These discoveries, which are very different from other classes of unconventional superconductors, not only point to new understanding of superconductivity in CrAs but also indicate more broadly the power of using multiple non-thermal tuning parameters simultaneously to reveal the intricate relationship between superconductivity and a hidden quantum critical point.