利用拉曼光谱探测铜绿石/锰矿异质结构中的界面和单个层

IF 3.1 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Physical Review Materials Pub Date : 2024-07-22 DOI:10.1103/physrevmaterials.8.074804
F. Lyzwa, A. Chan, K. Fürsich, B. Keimer, C. Faugeras, Yu. G. Pashkevich, C. Bernhard, M. Minola, B. P. P. Mallett
{"title":"利用拉曼光谱探测铜绿石/锰矿异质结构中的界面和单个层","authors":"F. Lyzwa, A. Chan, K. Fürsich, B. Keimer, C. Faugeras, Yu. G. Pashkevich, C. Bernhard, M. Minola, B. P. P. Mallett","doi":"10.1103/physrevmaterials.8.074804","DOIUrl":null,"url":null,"abstract":"We report a comprehensive set of polarized Raman spectra on thin-film multilayers of the high-<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi>T</mi><mi>c</mi></msub></math> superconductor <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mrow><mi>YBa</mi></mrow><mn>2</mn></msub><msub><mrow><mi>Cu</mi></mrow><mn>3</mn></msub><msub><mrow><mi mathvariant=\"normal\">O</mi></mrow><mn>7</mn></msub></math> and electrically insulating manganites <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>R</mi><msub><mi>MnO</mi><mn>3</mn></msub></mrow></math> (<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>R</mi><mo>=</mo></mrow></math> rare-earth partially substituted with group-II elements) hosting magnetic, charge and orbital order (COO). Such multilayers have been shown to exhibit a unique insulating-to-superconducting transition that is induced by magnetic field, electric field, or by tailoring the chemical composition of the <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>R</mi></math> site of the manganite. The Raman spectra show significant Jahn-Teller distortions of the manganite structure, which correlate with COO, approximately 90 K above the magnetic ordering temperature of 140 K. Based on the Raman data and earlier electrical transport studies of single-layer manganite films, we argue that the manganite layers in our heterostructures remain electrically insulating across the range of investigated temperatures, dopings, and magnetic fields. The Raman spectra show a pronounced redshift and broadening of lattice vibrations around 200 <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> in the multilayers compared to those of manganite films, which may indicate hybridization with <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mrow><mi>YBa</mi></mrow><mn>2</mn></msub><msub><mrow><mi>Cu</mi></mrow><mn>3</mn></msub><msub><mrow><mi mathvariant=\"normal\">O</mi></mrow><mn>7</mn></msub></math> phonons. We also observe additional excitations at 690 <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> and 830 <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> that are absent in the single films or bulk responses, which we discuss to originate from the cuprate/manganite interface. These observations demonstrate that the phonon spectrum is significantly modified in our multilayer samples. This is expected to play an important role in the mechanism of the insulating-to-superconducting transition found in these cuprate-manganite multilayers.","PeriodicalId":20545,"journal":{"name":"Physical Review Materials","volume":null,"pages":null},"PeriodicalIF":3.1000,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Probing the interface and individual layers in cuprate/manganite heterostructures by Raman spectroscopy\",\"authors\":\"F. Lyzwa, A. Chan, K. Fürsich, B. Keimer, C. Faugeras, Yu. G. Pashkevich, C. Bernhard, M. Minola, B. P. P. Mallett\",\"doi\":\"10.1103/physrevmaterials.8.074804\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We report a comprehensive set of polarized Raman spectra on thin-film multilayers of the high-<math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msub><mi>T</mi><mi>c</mi></msub></math> superconductor <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msub><mrow><mi>YBa</mi></mrow><mn>2</mn></msub><msub><mrow><mi>Cu</mi></mrow><mn>3</mn></msub><msub><mrow><mi mathvariant=\\\"normal\\\">O</mi></mrow><mn>7</mn></msub></math> and electrically insulating manganites <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><mi>R</mi><msub><mi>MnO</mi><mn>3</mn></msub></mrow></math> (<math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mrow><mi>R</mi><mo>=</mo></mrow></math> rare-earth partially substituted with group-II elements) hosting magnetic, charge and orbital order (COO). Such multilayers have been shown to exhibit a unique insulating-to-superconducting transition that is induced by magnetic field, electric field, or by tailoring the chemical composition of the <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><mi>R</mi></math> site of the manganite. The Raman spectra show significant Jahn-Teller distortions of the manganite structure, which correlate with COO, approximately 90 K above the magnetic ordering temperature of 140 K. Based on the Raman data and earlier electrical transport studies of single-layer manganite films, we argue that the manganite layers in our heterostructures remain electrically insulating across the range of investigated temperatures, dopings, and magnetic fields. The Raman spectra show a pronounced redshift and broadening of lattice vibrations around 200 <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> in the multilayers compared to those of manganite films, which may indicate hybridization with <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msub><mrow><mi>YBa</mi></mrow><mn>2</mn></msub><msub><mrow><mi>Cu</mi></mrow><mn>3</mn></msub><msub><mrow><mi mathvariant=\\\"normal\\\">O</mi></mrow><mn>7</mn></msub></math> phonons. We also observe additional excitations at 690 <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> and 830 <math xmlns=\\\"http://www.w3.org/1998/Math/MathML\\\"><msup><mrow><mi>cm</mi></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> that are absent in the single films or bulk responses, which we discuss to originate from the cuprate/manganite interface. These observations demonstrate that the phonon spectrum is significantly modified in our multilayer samples. This is expected to play an important role in the mechanism of the insulating-to-superconducting transition found in these cuprate-manganite multilayers.\",\"PeriodicalId\":20545,\"journal\":{\"name\":\"Physical Review Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2024-07-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Review Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1103/physrevmaterials.8.074804\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1103/physrevmaterials.8.074804","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

我们报告了一组关于高锝超导体 YBa2Cu3O7 和电绝缘锰矿 RMnO3(R=部分被第二族元素取代的稀土)薄膜多层的偏振拉曼光谱,这些薄膜多层具有磁序、电荷序和轨道序 (COO)。研究表明,磁场、电场或通过调整锰矿 R 位点的化学成分,可诱导这种多层膜发生从绝缘到超导的独特转变。拉曼光谱显示,锰酸盐结构发生了明显的贾恩-泰勒(Jahn-Teller)畸变,这与 COO 有关,比 140 K 的磁有序温度高出约 90 K。根据拉曼数据和早期对单层锰酸盐薄膜的电传输研究,我们认为,在所研究的温度、掺杂和磁场范围内,我们的异质结构中的锰酸盐层仍然是电绝缘的。拉曼光谱显示,与锰矿薄膜的拉曼光谱相比,多层膜中 200 cm-1 附近的晶格振动有明显的重移和拓宽,这可能表明与 YBa2Cu3O7 声子的杂化。我们还在 690 cm-1 和 830 cm-1 处观察到了单层薄膜或块体响应中所没有的额外激发,我们认为这些激发来自于杯状石/锰矿石界面。这些观察结果表明,声子谱在我们的多层样品中发生了显著变化。预计这将在这些铜锰酸盐多层膜的绝缘到超导转变机制中发挥重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Probing the interface and individual layers in cuprate/manganite heterostructures by Raman spectroscopy
We report a comprehensive set of polarized Raman spectra on thin-film multilayers of the high-Tc superconductor YBa2Cu3O7 and electrically insulating manganites RMnO3 (R= rare-earth partially substituted with group-II elements) hosting magnetic, charge and orbital order (COO). Such multilayers have been shown to exhibit a unique insulating-to-superconducting transition that is induced by magnetic field, electric field, or by tailoring the chemical composition of the R site of the manganite. The Raman spectra show significant Jahn-Teller distortions of the manganite structure, which correlate with COO, approximately 90 K above the magnetic ordering temperature of 140 K. Based on the Raman data and earlier electrical transport studies of single-layer manganite films, we argue that the manganite layers in our heterostructures remain electrically insulating across the range of investigated temperatures, dopings, and magnetic fields. The Raman spectra show a pronounced redshift and broadening of lattice vibrations around 200 cm1 in the multilayers compared to those of manganite films, which may indicate hybridization with YBa2Cu3O7 phonons. We also observe additional excitations at 690 cm1 and 830 cm1 that are absent in the single films or bulk responses, which we discuss to originate from the cuprate/manganite interface. These observations demonstrate that the phonon spectrum is significantly modified in our multilayer samples. This is expected to play an important role in the mechanism of the insulating-to-superconducting transition found in these cuprate-manganite multilayers.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Physical Review Materials
Physical Review Materials Physics and Astronomy-Physics and Astronomy (miscellaneous)
CiteScore
5.80
自引率
5.90%
发文量
611
期刊介绍: Physical Review Materials is a new broad-scope international journal for the multidisciplinary community engaged in research on materials. It is intended to fill a gap in the family of existing Physical Review journals that publish materials research. This field has grown rapidly in recent years and is increasingly being carried out in a way that transcends conventional subject boundaries. The journal was created to provide a common publication and reference source to the expanding community of physicists, materials scientists, chemists, engineers, and researchers in related disciplines that carry out high-quality original research in materials. It will share the same commitment to the high quality expected of all APS publications.
期刊最新文献
Impact of grain boundary energy anisotropy on grain growth Magnetization dependent anisotropic topological properties in EuCuP Fluorite-type materials in the monolayer limit Intrinsic origins of broad luminescence in melt-grown ZnGa2O4 single crystals Subjugating extensive magnetostructural temperature window and giant magnetocaloric effect in B-doped (MnNiSi)0.67(Fe2Ge)0.33 hexagonal system
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1