Pseudogap suppression by competition with superconductivity in La-based cuprates
Artikel i vetenskaplig tidskrift, 2022

We carried out a comprehensive high-resolution angle-resolved photoemission spectroscopy (ARPES) study of the pseudogap interplay with superconductivity in La-based cuprates. The three systems La2-xSrxCuO4, La1.6-xNd0.4SrxCuO4, and La1.8-xEu0.2SrxCuO4 display slightly different pseudogap critical points in the temperature versus doping phase diagram. We studied the pseudogap evolution into the superconducting state for doping concentrations just below the critical point. In this setting, near optimal doping for superconductivity and in the presence of the weakest possible pseudogap, we uncover how the pseudogap is partially suppressed inside the superconducting state. This conclusion is based on the direct observation of a reduced pseudogap energy scale and re-emergence of spectral weight suppressed by the pseudogap. Altogether these observations suggest that the pseudogap phenomenon in La-based cuprates is in competition with superconductivity for antinodal spectral weight.

Författare

Julia Küspert

Universität Zürich

R. Cohn Wagner

Universität Zürich

C. Lin

Universität Zürich

Karin von Arx

Universität Zürich

Chalmers, Fysik, Materialfysik

Q. Wang

Universität Zürich

K. P. Kramer

Universität Zürich

W. R. Pudelko

Universität Zürich

Paul Scherrer Institut

N. C. Plumb

Paul Scherrer Institut

C. E. Matt

Paul Scherrer Institut

Universität Zürich

C. G. Fatuzzo

Ecole Polytechnique Federale de Lausanne (EPFL)

D. Sutter

Universität Zürich

Yasmine Sassa

Chalmers, Fysik, Materialfysik

J. Q. Yan

Oak Ridge National Laboratory

J. S. Zhou

The University of Texas at Austin

J. B. Goodenough

The University of Texas at Austin

S. Pyon

University of Tokyo

T. Takayama

University of Tokyo

H. Takagi

University of Tokyo

T. Kurosawa

Hokkaido University

N. Momono

Hokkaido University

Muroran Institute of Technology

M. Oda

Hokkaido University

M. Hoesch

Deutsches Elektronen-Synchrotron (DESY)

Diamond Light Source

C. Cacho

Diamond Light Source

T. K. Kim

Diamond Light Source

M. Horio

Universität Zürich

J. Chang

Universität Zürich

Physical Review Research

26431564 (ISSN)

Vol. 4 4 043015

Ämneskategorier

Fysikalisk kemi

Astronomi, astrofysik och kosmologi

Atom- och molekylfysik och optik

DOI

10.1103/PhysRevResearch.4.043015

Mer information

Senast uppdaterat

2024-01-03