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Dresden 2017 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 69: Focus Session: Superconductivity in the Vicinity of a Quantum Critical Point

TT 69.4: Invited Talk

Thursday, March 23, 2017, 16:45–17:15, HSZ 03

Superconductivity near Structural Instabilities — •Malte Grosche — Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK

Complex materials frequently display an interesting interplay between structural and electronic instabilities, which can often be studied effectively under applied pressure. This talk will present some recent examples, including (i) a structural quantum critical point and its consequences for superconductivity in the quasi-skutterudite system (Sr/Ca)3(Ir/Rh)4Sn13 [1], (ii) unconventional superconductivity in YFe2Ge2 and its connection with superconductivity in the high-pressure collapsed tetragonal phase of alkaline-metal iron arsenides [2], and (iii) strong-coupling superconductivity in the incommensurate high-pressure host-guest structure of elemental bismuth.

[1] Goh et al., Phys. Rev. Lett. 114, 097002 (2015)

[2] Chen et al., Phys. Rev. Lett. 116, 127001 (2016)

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