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[[Vol. 66]New EDLT-DAC Provides Insights Into High-Pressure Environments_ WPI-MANA.pdf](https://mdr.nims.go.jp/filesets/bffceef0-ca51-4ddf-b762-688373a1890f/download)

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International Center for Materials Nanoarchitectonics (WPI-MANA)

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[[Research Highlights Vol.66] New EDLT-DAC Provides Insights Into High-Pressure Environments](https://mdr.nims.go.jp/datasets/bc62a7d3-c4be-4ed2-87d8-1fab87dd340f)

## Fulltext

2022/03/31 16:19 New EDLT-DAC Provides Insights Into High-Pressure Environments| MANAhttps://www.nims.go.jp/mana/research/highlights/vol66.html 1/2Previous  Index  NextResearch Highlights[Vol. 66]New EDLT-DAC Provides Insights Into High-Pressure Environments19 Mar, 2021MANA researchers have devised a way to control the carrier density in various materialsunder high pressure by combining an electric double-layer transistor (EDLT) with adiamond anvil cell (DAC) and applying the resulting EDLT-DAC to thin films.Research into extremely high pressure environments is unlocking phenomena that are inaccessibleat ambient pressures. One recent success was the discovery of high transition-temperaturesuperconductivity (HTS) in hydrides using a DAC. HTS in hydrides had been predicted but neveractually produced.EDLTs have been used recently to introduce carriers into various materials, which has led to anumber of interesting phenomena being observed. Forming an EDLT on a sample surface induces alarge number of carriers around the sample surface. The EDLT structure and the DAC are the mostwidely used tools for tuning physical properties in materials; combining them multiplies theirusefulness.In their research, the MANA team developed an EDLT-DAC and applied it to a thin film of bismuth.They then exerted high pressure using the DAC and observed the electrical field effect in thecondensed material to verify the characteristics of the EDLT-DAC.They found that the sample exhibited a prominent response upon the application of the electrichttps://www.nims.go.jp/mana/research/highlights/vol65.htmlhttps://www.nims.go.jp/mana/research/highlights/index.htmlhttps://www.nims.go.jp/mana/research/highlights/vol67.html2022/03/31 16:19 New EDLT-DAC Provides Insights Into High-Pressure Environments| MANAhttps://www.nims.go.jp/mana/research/highlights/vol66.html 2/2field and pressure, as expected. The electric double layer was stabilized by the pressure, whichthey hope will contribute to the development of devices such as new types of transistors in thefield of applied physics.Because their EDLT-DAC can tune the carrier density of the materials under high pressure, theresearchers believe it will help accelerate the exploration of physical phenomena that have neverbeen studied before.This research was carried out by Yoshihiko Takano (MANA Principal Investigator, Group Leader,Nano Frontier Superconducting Materials Group) and his collaborators.Reference“Demonstration of Electric Double Layer Gating Under High Pressure by the Development of Field-Effect Diamond Anvil Cell”Author: Shintaro Adachi, Ryo Matsumoto, Sayaka Yamamoto, Takafumi D. Yamamoto, KenseiTerashima, Yoshito Saito, Miren Esparza Echevarria, Pedro Baptista de Castro, Peng Song, SuguruIwasaki, Hiroyuki Takeya, Yoshihiko TakanoJournal: Applied Physics Letters 116, 223506 (2020) [25 December 2019]DOI : 10.1063/5.0004973（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/takano_yoshihiko?locale=enhttps://samurai.nims.go.jp/profiles/terashima_kensei?locale=enhttps://samurai.nims.go.jp/profiles/takeya_hiroyuki?locale=enhttps://samurai.nims.go.jp/profiles/takano_yoshihiko?locale=enhttps://doi.org/10.1063/5.0004973https://www.nims.go.jp/mana/ebulletin/