Hybridization of Bogoliubov Quasiparticles between AdjacentCuO2Layers in the Triple-Layer CuprateBi2Sr2Ca2Cu3O10+δStudied by Angle-Resolved Photoemission Spectroscopy,Physical Review Letters

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Hybridization of Bogoliubov Quasiparticles between AdjacentCuO2Layers in the Triple-Layer CuprateBi2Sr2Ca2Cu3O10+δStudied by Angle-Resolved Photoemission Spectroscopy
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-11-19 , DOI: 10.1103/physrevlett.127.217004
S Ideta _{1,

2} , S Johnston ₃ , T Yoshida ₄ , K Tanaka ₂ , M Mori ₅ , H Anzai _{6,

7} , A Ino _{7,

8,

9} , M Arita ₈ , H Namatame ₈ , M Taniguchi _{7,

8} , S Ishida _{1,

10} , K Takashima ₁ , K M Kojima _{1,

11,

12} , T P Devereaux _{13,

14,

15} , S Uchida _{1,

10} , A Fujimori _{1,

16}

Affiliation

Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.
UVSOR-III Synchrotron, Institute for Molecular Science, Okazaki 444-8585, Japan.
Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996, USA.
Department of Human and Environmental studies, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
Advanced Science Research Center, Japan Atomic Energy Agency, Tokai 319-1195, Japan.
Graduate School of Engineering, Osaka Prefecture University, Sakai 599-8531, Japan.
Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.
Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan.
Department of Education and Creation Engineering, Kurume Institute of Technology, Fukuoka 2286-66, Japan.
National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan.
J-PARC Center and Institute of Materials Structure Science, KEK, Tsukuba, Ibaraki 305-0801, Japan.
Centre for Molecular and Materials Science, TRIUMF, 4004 Vancouver, Canada.
Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA.
Stanford Institute for Materials and Energy Sciences, SLAC National Laboratory and Stanford University, Menlo Park, California 94025, USA.
Department of Materials Science and Engineering Stanford University, Stanford, California 94305, USA.
Department of Applied Physics, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan.

Hybridization of Bogoliubov quasiparticles (BQPs) between the

{CuO}_{2}

layers in the triple-layer cuprate high-temperature superconductor

{Bi}_{2} {Sr}_{2} {Cu}_{2} {Cu}_{3} O_{10 + δ}

is studied by angle-resolved photoemission spectroscopy (ARPES). In the superconducting state, an anticrossing gap opens between the outer- and inner-BQP bands, which we attribute primarily to interlayer single-particle hopping with possible contributions from interlayer Cooper pairing. We find that the

d

-wave superconducting gap of both BQP bands smoothly develops with momentum without an abrupt jump in contrast to a previous ARPES study. Hybridization between the BQPs also gradually increases in going from the off nodal to the antinodal region, which is explained by the momentum dependence of the interlayer single-particle hopping. As possible mechanisms for the enhancement of the superconducting transition temperature, the hybridization between the BQPs as well as the combination of phonon modes of the triple