Journal of Electron Spectroscopy and Related Phenomena最新文献_第7页

magnetoARPES: Angle Resolved Photoemission Spectroscopy with magnetic field control 磁场控制的角度分辨光谱学

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147357

Sae Hee Ryu , Garett Reichenbach , Chris M. Jozwiak , Aaron Bostwick , Peter Richter , Thomas Seyller , Eli Rotenberg

{"title":"magnetoARPES: Angle Resolved Photoemission Spectroscopy with magnetic field control","authors":"Sae Hee Ryu , Garett Reichenbach , Chris M. Jozwiak , Aaron Bostwick , Peter Richter , Thomas Seyller , Eli Rotenberg","doi":"10.1016/j.elspec.2023.147357","DOIUrl":"10.1016/j.elspec.2023.147357","url":null,"abstract":"<div>Angle-Resolved Photoemission Spectroscopy (ARPES) is a premier technique for understanding the electronic excitations in conductive, crystalline matter, in which the induced photocurrent is collected and dispersed in energy and angle of emission to reveal the energy- and momentum-dependent single particle spectral function <math><mrow><mi>A</mi><mrow><mo>(</mo><mi>k</mi><mo>,</mo><mi>ω</mi><mo>)</mo></mrow></mrow></math>. So far, ARPES in a magnetic field has been precluded due to the need to preserve the electron paths between the sample and detector. In this paper we report progress towards “magnetoARPES”, a variant of ARPES that can be conducted in a magnetic field. It is achieved by applying a microscopic probe beam (<math><mo>≲</mo></math>10 <math><mrow><mi>μ</mi><mi>m</mi></mrow></math>) to a thinned sample mounted upon a special sample holder that generates magnetic field confined to a thin layer near the sample surface. In this geometry we could produce ARPES in magnetic fields up to around ±100 mT. The magnetic fields can be varied from purely in-plane to nearly purely out-of-plane, by scanning the probe beam across different parts of the device. We present experimental and simulated data for graphene to explore the aberrations induced by the magnetic field. These results demonstrate the viability of the magnetoARPES technique for exploring symmetry breaking effects in weak magnetic fields.</div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"266 ","pages":"Article 147357"},"PeriodicalIF":1.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47542817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Theoretical spectral function of CH3NH3PbI3 hybrid perovskite around the Fermi level 费米能级附近CH3NH3PbI3杂化钙钛矿的理论光谱函数

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147345

Min-I Lee , S. Ayaz Khan , J. Minar , A. Tejeda

引用次数: 0

Scanning transmission soft X-ray spectromicroscopy of mouse kidney and liver 小鼠肾脏和肝脏的扫描透射软x射线光谱显微镜

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147368

Tuomas Mansikkala , Takuji Ohigashi , Miia H. Salo , Anniina E. Hiltunen , Reetta Vuolteenaho , Petra Sipilä , Satu Kuure , Marko Huttula , Johanna Uusimaa , Reetta Hinttala , Ilkka Miinalainen , Salla Kangas , Minna Patanen

引用次数: 0

Analysis of surface properties of Mg doped ZnS and ZnSe thin films through x-ray photoelectron spectroscopy Mg掺杂ZnS和ZnSe薄膜表面性质的x射线光电子能谱分析

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147341

V.S. Ganesha Krishna, M.G. Mahesha

引用次数: 1

Illuminating the brain: Revealing brain biochemistry with synchrotron X-ray spectromicroscopy 照亮大脑:用同步加速器x射线光谱显微镜揭示大脑生物化学

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147355

James Everett , Jake Brooks , Frederik Lermyte , Vindy Tjendana Tjhin , Ian Hands-Portman , Emily Hill , Joanna F. Collingwood , Neil D. Telling

引用次数: 0

Atomically dispersed Ni-N-C electrocatalysts, studied by Ni L-edge spectro-ptychography 原子分散Ni-N-C电催化剂的镍L边光谱研究

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147364

Chunyang Zhang , Jiatang Chen , Hao Yuan , Jian Wang , Tianxiao Sun , Drew Higgins , Adam P. Hitchcock

{"title":"Atomically dispersed Ni-N-C electrocatalysts, studied by Ni L-edge spectro-ptychography","authors":"Chunyang Zhang , Jiatang Chen , Hao Yuan , Jian Wang , Tianxiao Sun , Drew Higgins , Adam P. Hitchcock","doi":"10.1016/j.elspec.2023.147364","DOIUrl":"10.1016/j.elspec.2023.147364","url":null,"abstract":"<div>Soft X-ray spectro-ptychography of nickel-nitrogen-carbon electrocatalysts containing atomically dispersed Ni-based active sites were measured at the Ni L3 edge. Samples prepared with two different loadings of Ni precursors were investigated and compared to the results of an earlier study using scanning transmission X-ray microscopy (STXM) [Zhang et al., ACS Catalysis 12 (2022) 8746]. The ptychography data sets were measured using a defocused probe (1–3 µm). The spatial resolution was improved from ∼60 nm (STXM) to ∼20 nm (ptychography). Spectro-ptychography stacks were measured at 4 component-specific energies (4-E stack) and at many energies across the full Ni L3 edge (34-E stack). Maps of three key chemical components (Ni metal, Ni3S2, and atomically dispersed N-coordinated Ni catalyst sites) were derived by fits of suitable reference spectra to absorption signals derived from the amplitude images from ptychographic reconstruction. The spectro-ptychography 4-E and 34-E stacks gave chemical mapping similar to each other and to the earlier STXM results. The phase signals obtained from the same data set and reconstruction were also found to be analyzable using reference phase spectra extracted from the phase stack, which generated chemical maps similar to those based on ptychography amplitude data. By using a defocused probe, the radiation dose and acquisition times for spectro-ptychography are comparable to conventional STXM, but significantly improved spatial resolution was achieved. This study highlights the added value of spectro-ptychography relative to STXM for studies of electrocatalysts.</div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"266 ","pages":"Article 147364"},"PeriodicalIF":1.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47041199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A library of calcium mineral reference spectra recorded by parallel imaging using NEXAFS spectromicroscopy 利用NEXAFS光谱显微镜平行成像记录的钙矿物参考光谱库

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147361

Mette H. Rasmussen , Cherno Jaye , Daniel Fischer , Tobias Weidner

{"title":"A library of calcium mineral reference spectra recorded by parallel imaging using NEXAFS spectromicroscopy","authors":"Mette H. Rasmussen , Cherno Jaye , Daniel Fischer , Tobias Weidner","doi":"10.1016/j.elspec.2023.147361","DOIUrl":"10.1016/j.elspec.2023.147361","url":null,"abstract":"<div>Calcium minerals are ubiquitous in geology and life chemistry. Understanding the phase and chemical state of calcium minerals is important for numerous processes including materials chemistry, hard tissue biogenesis and geological processes. Photoemission spectroscopies such as near edge X-ray absorption fine structure (NEXAFS) and scanning transmission X-ray microscopy have been instrumental in identifying and characterizing calcium minerals in all these areas. In this work, we have recorded reference spectra for a range of different calcium minerals including a series of calcium carbonates, calcium oxalates and calcium phosphates. While collections of reference spectra for several calcium minerals can be found in the literature, these spectra have been reported in different contexts using a variety of instruments. We, here, report a comprehensive list of references recorded in parallel in a single experiment by imaging an array of calcium minerals using a NEXAFS microscope. We present reference NEXAFS spectra at the calcium L-, carbon K- and oxygen K-edges.</div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"266 ","pages":"Article 147361"},"PeriodicalIF":1.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46982837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developments in sample environment for a scanning transmission X-ray microscope at UVSOR-III synchrotron UVSOR-III同步加速器扫描透射x射线显微镜样品环境研究进展

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147356

Takuji Ohigashi , Nobuhiro Kosugi

引用次数: 1

Nanoscale spectromicroscopy with the full-field X-ray microscope at the BESSY II electron storage ring in the soft and tender X-ray range 在BESSY II型电子存储环的软、嫩x射线范围内，使用全场x射线显微镜进行纳米光谱显微镜

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147344

Peter Guttmann , Carla Bittencourt , Stephan Werner , Stefan Rehbein , Christoph Pratsch , Gerd Schneider

{"title":"Nanoscale spectromicroscopy with the full-field X-ray microscope at the BESSY II electron storage ring in the soft and tender X-ray range","authors":"Peter Guttmann , Carla Bittencourt , Stephan Werner , Stefan Rehbein , Christoph Pratsch , Gerd Schneider","doi":"10.1016/j.elspec.2023.147344","DOIUrl":"10.1016/j.elspec.2023.147344","url":null,"abstract":"<div>In this paper, we give an overview of the nanoscale spectromicroscopy studies performed with the full-field X-ray microscope at the BESSY II electron storage ring. We do not consider spectromicroscopy studies performed with X-ray microscopes operated at other synchrotron sources. Such studies can be found in the literature. To our knowledge, the full-field X-ray microscope at the BESSY II storage ring is the first one operating with both a plane-grating-monochromator (PGM) beamline equipped with multi-layer optics for the tender X-ray range, as well as with standard optical elements for the soft X-ray range. We discuss how this instrument has been used in various published NEXAFS-TXM studies to probe low dimensional nanostructures. This research work paves the way for understanding electronic structures approaching the atomic scale, and will thereby help in the design of tailored functional systems.</div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"266 ","pages":"Article 147344"},"PeriodicalIF":1.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42832309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the use of soft X-ray STXM for organic-inorganic halide perovskite photovoltaic materials 软X射线STXM在有机-无机卤化物钙钛矿光伏材料中的应用

IF 1.9 4区物理与天体物理

Journal of Electron Spectroscopy and Related Phenomena Pub Date : 2023-07-01 DOI: 10.1016/j.elspec.2023.147358

Haeyeon Jun , Chloé Dindault , Denis Tondelier , Bernard Geffroy , Ileana Florea , Jean-Eric Bouree , Philip Schulz , Yvan Bonnassieux , Sufal Swaraj

{"title":"On the use of soft X-ray STXM for organic-inorganic halide perovskite photovoltaic materials","authors":"Haeyeon Jun , Chloé Dindault , Denis Tondelier , Bernard Geffroy , Ileana Florea , Jean-Eric Bouree , Philip Schulz , Yvan Bonnassieux , Sufal Swaraj","doi":"10.1016/j.elspec.2023.147358","DOIUrl":"10.1016/j.elspec.2023.147358","url":null,"abstract":"<div>Metal-halide perovskites are complex materials with outstanding optoelectronic properties. Thus it is of interest to analyze these materials by using every available research tool. Synchrotron tools have played an important role in fundamental and applied research for decades. Many synchrotron-based hard X-ray tools are already providing effective feedback to the perovskite solar cell (PSC) research community. With several fourth-generation light sources up and running or under development, this contribution will continue to impact every aspect of scientific advancement including PSC research. Arguably, the contribution of soft X-rays in PSC research is relatively limited. In view of the developments in the synchrotron world and the fact that a multimethod approach, combining laboratory-based techniques as well as synchrotron-based techniques, is necessary to provide constructive feedback to the PSC community we present here a collection of arguments and procedures with the aim of highlighting the use of soft X-ray scanning transmission X-ray microscopy (STXM). Some aspects of these arguments are elaborated with STXM investigation of perovskite material formamidinium-methylammonium lead iodide (FA1−xMAxPbI3).</div>","PeriodicalId":15726,"journal":{"name":"Journal of Electron Spectroscopy and Related Phenomena","volume":"266 ","pages":"Article 147358"},"PeriodicalIF":1.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45526239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1