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[[Vol. 73]Electrons Move in Preferred Direction in Cuprate Superconductors_ WPI-MANA.pdf](https://mdr.nims.go.jp/filesets/ffbbc357-c3f1-4f6f-9074-e4fa21af819f/download)

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International Center for Materials Nanoarchitectonics (WPI-MANA)

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[[Research Highlights Vol.73] Electrons Move in Preferred Direction in Cuprate Superconductors](https://mdr.nims.go.jp/datasets/ff2cb6f3-b0d6-4986-b7e9-86923c401d05)

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2022/03/31 16:05 Electrons Move in Preferred Direction in Cuprate Superconductors| MANAhttps://www.nims.go.jp/mana/research/highlights/vol73.html 1/2Previous  Index  NextResearch Highlights[Vol. 73]Electrons Move in Preferred Direction in Cuprate Superconductors18 Nov, 2021A team at MANA has gleaned important insights into the properties of Lanthanum-basedcuprate superconductors, the highest-temperature superconducting family yetdiscovered under ambient pressure.The team’s results imply that, in contrast to common belief among researchers for the last 35years, electrons have a preferred direction along either the x or the y axis in each CuO2 plane, andthe preferred direction alternates between the planes.High-temperature cuprate superconductors have continued to generate keen interest for morethan 30 years due to the various phenomena they exhibit with changes in carrier doping andtemperature, such as the pseudogap phase, nematic order, charge-density wave and spin-densitywave, as well as superconductivity.The Fermi surface is fundamental in condensed matter physics for understanding metallicproperties. Its shape directly reflects the electron motion inside the material and as such it is thekey to understanding materials’ properties.High-temperature cuprate superconductors are characterized by stacks of copper–oxygen (CuO2)planes, a fact that has convinced many researchers that electrons exhibit two-dimensional motionhttps://www.nims.go.jp/mana/research/highlights/vol72.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/highlights/vol74.html2022/03/31 16:05 Electrons Move in Preferred Direction in Cuprate Superconductors| MANAhttps://www.nims.go.jp/mana/research/highlights/vol73.html 2/2in CuO2 planes.The WPI-MANA team, led by Hiroyuki Yamase, applied the high-resolution X-ray Comptonscattering technique to a sample of La2-xSrxCuO4 and imaged the momentum distribution ofelectrons.The results provide new understanding of the electronic properties of cuprate superconductors.Compton scattering can be a powerful tool to elucidate electronic properties in materials andsometimes works beyond other widely employed techniques. The researchers said it will beexciting to see the technique employed as a complement to other methods.This research was carried out by Hiroyuki Yamase of WPI-MANA and his collaborators.Reference“Fermi Surface in La-Based Cuprate Superconductors from Compton Scattering Imaging”Hiroyuki Yamase, Yoshiharu Sakurai, Masaki Fujita, Shuichi Wakimoto, and Kazuyoshi YamadaJournal: Nature Communications 12, 2223 (2021)DOI : 10.1038/s41467-021-22229-6（MANA E-BULLETIN）https://www.nims.go.jp/mana/ebulletin/AffiliationsInternational Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for MaterialsScience (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, JapanContact informationInternational Center for Materials Nanoarchitectonics(WPI-MANA)National Institute for Materials Science1-1 Namiki, Tsukuba, Ibaraki 305-0044 JapanPhone: +81-29-860-4710E-mail: mana-pr[AT]ml.nims.go.jphttps://samurai.nims.go.jp/profiles/yamase_hiroyuki?locale=enhttps://samurai.nims.go.jp/profiles/yamase_hiroyuki?locale=enhttps://doi.org/10.1038/s41467-021-22229-6https://www.nims.go.jp/mana/ebulletin/