Charge Order and Superconductivity in Underdoped YBa2Cu3O7δ under Pressure

Carsten Putzke, Jake Ayres, Jonathan Buhot, Salvatore Licciardello, Nigel E. Hussey, Sven Friedemann, and Antony Carrington
Phys. Rev. Lett. 120, 117002 – Published 16 March 2018
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Abstract

In underdoped cuprates, an incommensurate charge density wave (CDW) order is known to coexist with superconductivity. A dip in Tc at the hole doping level where the CDW is strongest (np0.12) suggests that CDW order may suppress superconductivity. We investigate the interplay of charge order with superconductivity in underdoped YBa2Cu3O7δ by measuring the temperature dependence of the Hall coefficient RH(T) at high magnetic field and at high hydrostatic pressure. We find that, although pressure increases Tc by up to 10 K at 2.6 GPa, it has very little effect on RH(T). This suggests that pressure, at these levels, only weakly affects the CDW and that the increase in Tc with pressure cannot be attributed to a suppression of the CDW. We argue, therefore, that the dip in Tc at np0.12 at ambient pressure is probably not caused by the CDW formation.

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  • Received 21 July 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.117002

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Carsten Putzke1, Jake Ayres1, Jonathan Buhot2, Salvatore Licciardello2, Nigel E. Hussey2, Sven Friedemann1, and Antony Carrington1

  • 1H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom
  • 2High Field Magnet Laboratory (HFML-EMFL), Radboud University, Toernooiveld 7, Nijmegen 6525 ED, Netherlands

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Issue

Vol. 120, Iss. 11 — 16 March 2018

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