Spin and charge excitations in artificial hole- and electron-doped infinite layer cuprate superconductors

被引：22

作者：

Dellea, G. ^{[1
,2
]}

Minola, M. ^{[1
,2
,14
]}

Galdi, A. ^{[3
,4
]}

Di Castro, D. ^{[5
,6
]}

Aruta, C. ^{[5
,6
]}

Brookes, N. B. ^{[7
]}

Jia, C. J. ^{[8
,9
]}

Mazzoli, C. ^{[1
,2
,15
]}

Sala, M. Moretti ^{[7
]}

Moritz, B. ^{[8
,9
]}

Orgiani, P. ^{[10
,11
]}

Schlom, D. G. ^{[12
,13
]}

Tebano, A. ^{[5
,6
]}

Balestrino, G. ^{[5
,6
]}

Braicovich, L. ^{[1
,2
]}

Devereaux, T. P. ^{[8
,9
]}

Maritato, L. ^{[10
,11
]}

Ghiringhelli, G. ^{[1
,2
]}

机构：

[1] Politecn Milan, CNR, SPIN, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy

[2] Politecn Milan, Dipartimento Fis, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy

[3] Univ Salerno, CNR, SPIN, I-84084 Fisciano, SA, Italy

[4] Univ Salerno, Dipartimento Ingn Informaz Ingn Elettr & Matemat, I-84084 Fisciano, SA, Italy

[5] Univ Roma Tor Vergata, CNR, SPIN, Via Politecn 1, I-00133 Rome, Italy

[6] Univ Roma Tor Vergata, Dipartimento Ingn Civile & Ingn Informat, Via Politecn 1, I-00133 Rome, Italy

[7] European Synchrotron Radiat Facil, 71 Ave Martyrs, F-38043 Grenoble, France

[8] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA

[9] Stanford Univ, Menlo Pk, CA 94025 USA

[10] Univ Salerno, Dipartimento Ingn Ind DIIN, I-84084 Fisciano, SA, Italy

[11] CNR, SPIN, I-84084 Fisciano, SA, Italy

[12] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[13] Cornell Nanoscale Sci, Kavli Inst, Ithaca, NY 14853 USA

[14] Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany

[15] Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 11期

基金：

欧盟地平线“2020”; 美国国家科学基金会;

关键词：

THIN-FILMS; TEMPERATURE; ASYMMETRY; TRANSPORT; GROWTH; SRCUO2;

D O I：

10.1103/PhysRevB.96.115117

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The asymmetry between electron and hole doping in high critical-temperature superconducting (HTS) cuprates is key information for the understanding of Cooper pair formation mechanisms. Despite intensive studies on different cuprates, a comprehensive description of related magnetic and charge excitations is still fragmentary. In the present work, artificial cuprates were used to cover the entire phase diagram within the same HTS family. In particular, Cu L-3-edge resonant inelastic x-ray scattering (RIXS) measurements were performed on artificial n- and p-type infinite layer (IL) epitaxial films. Beside several similarities, RIXS spectra show noticeable differences in the evolution, with doping level, of magnetic and charge intensity and damping. Compatible trends can be found in spectra measured on bulk cuprates, as well as in theoretical calculations of the spin dynamical structure factor S(q,omega). The findings give a deeper insight into the evolution of collective excitations across the cuprate phase diagram, and on underlying general features, only connected to the doping type. Moreover, they pave the way to the exploration of general properties of HTS physics over a broad range of conditions, by means of artificial compounds not constrained by the thermodynamic limitations governing the chemical stability of bulk materials.

引用

页数：8

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