Tokyo Institute of Technology Hitosugi Lab

About us


As atoms condense to form a molecule or a solid, exotic physical phenomenon far beyond our intuition begin to emerge.

Imagine building up a condensed material by bonding atoms together one-by-one. New electronic properties will immediately appear after two atoms bond each other. As we increase the number of atoms further, from three, to ten, to one hundred, to one million, new and unusual physical properties will emerge at each step, and eventually we will arrive at the familiar properties of a bulk material.

By addressing atomic and electronic structure, our group aims to elucidate the novel physical and chemical properties of materials spanning a range of size scales. Our research includes the interactions within networks of condensed materials and the interface phenomena between different materials. In addition to their basic physics and chemistry, we also focus on their technological applications, and ultimately aim for outcomes which are beneficial for our everyday life.

To achieve our goals, we carefully design and fabricate nanostructures and thin films on the atomic scale, and study their electronic properties using state-of-the-art measurement techniques.

Through our tireless pursuit of new materials and functionalities, we are opening up new frontiers in condensed matter science, on scales ranging from the microscopic to the macroscopic.

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Latest News View All

2020.8.9
A paper "Polarity reversal of the charge carrier in tetragonal TiHx (x = 1.6-2.0) at low temperatures" was accepted for the publication in Phys. Rev. Research.
2020.8.7
A paper "Width-induced metal-insulator transition in SrVO3 lateral nanowires spontaneously formed on the ultrathin film" was accepted for the publication in Appl. Phys. Lett.
2020.7.29
We are going to host a Workshop on oxides on Aug. 7, 2020.
2020.7.24
A paper "Epitaxial Thin Film Growth of Europium Dihydride" was accepted for the publication in Cryst. Growth Des.
2020.7.16
A paper "The impact of surface roughness on recrystallization of α-Al2O3(001) single crystal to α-AlO(OH) diaspore microcrystals" was accepted for the publication in ACS Omega.
2020.7.15
A paper "Diffusion of F atoms from fluoride substrates promotes the epitaxial growth of metal fluorides" was selected for "Spotlights" in Appl. Phys. Express.
2020.7.10
A result of a paper "Metal Hydrides: Epitaxial Growth and Electronic Properties" was highlighted on the website of Hydrogenomics.
2020.7.10
A message about innovation in the research way was updated.
2020.7.5
A video lecture about AI-Robotics was updated.
2020.7.2
A paper "Diffusion of F atoms from fluoride substrates promotes the epitaxial growth of metal fluorides" was accepted for the publication in Appl. Phys. Express.
2020.7.1
A paper "Impact of the Crystal Orientation of Positive Electrodes on the Interface Resistance Across a Solid Electrolyte and Electrode" was accepted for the publication in ACS Appl. Energy Mater.
2020.7.1
A messages about development of research of all-solid-state Li battery and memory device was updated.
2020.6.25
Our results on "Interfacial superconductivity in FeSe ultrathin films on SrTiO3 probed by in situ independently driven four-point-probe measurements" were press released.
2020.6.25
A video message about innovation in the research way was updated.
2020.6.24
A message about ion and electron transport phenomena at the interface of all-solid-state batteries was updated.
2020.6.24
A message about high-throughput search for new multi-component materials by utilizing AI and robots was updated.
2020.6.18
A message about strengthen material innovation was updated.
2020.6.18
A message about development of research of all-solid-state Li battery was updated.
2020.6.18
A message about electrode interface resistance of all-solid-state Li battery was updated.
2020.5.31
A paper "Interfacial superconductivity in FeSe ultrathin films on SrTiO3 probed by in situ independently driven four-point-probe measurements" was accepted for the publication in Phys. Rev. Lett.
2020.5.31
A paper "Superconducting dome revealed by surface structure dependence in single unit cell FeSe on SrTiO3 (001)" was accepted for the publication in Phys. Rev. B.
2020.5.24
Our research was appeared in The Chemical Daily.
2020.4.8
A paper "Bayesian statistics-based analysis of AC impedance spectra" was accepted for the publication in AIP Advances.
2020.4.2
Two doctor course students, and three bachelor course students joined.
2020.3.30
Our study appeared in The Nihon Keizai Shimbun.
2020.3.26
A paper "Metal Hydrides: Epitaxial Growth and Electronic Properties" was accepted for the publication in J. Phys. Soc. Jpn.
2019.3.26
Four students graduated the baccalaureate degree program. Four students graduated the master degree program.
There are students who fledged Hitosugi Lab. We pray for the success in the new world.
2020.3.25
Our results on "Hole Accumulation at the Grain Boundary Enhances Water Oxidation at α-Fe2O3 Electrodes under Microwave Electric Field" were press released.
2020.3.13
A paper "Visible-light-driven photocatalysis via reductant-to-band charge transfer in Cr(III) nanocluster-loaded SrTiO3 system" was accepted for the publication in Appl. Catal. B.
2020.3.4
A paper "Hole Accumulation at the Grain Boundary Enhances Water Oxidation at α-Fe2O3 Electrodes under Microwave Electric Field" was accepted for the publication in J. Phys. Chem. C.
2020.2.22
Takeda received Okakai Excellence Award at Graduation research presentation.
2020.1.31
A paper "Ultrahigh-pressure fabrication of single-phase α-PbO2-type TiO2 epitaxial thin films" was accepted for the publication in AIP Advances.
2020.1.26
A farewell party was held for Ross, a short-term student.
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2020.1.24
A paper "Low interface resistance in solid-state lithium batteries using spinel LiNi0.5Mn1.5O4(111) epitaxial thin films" was accepted for the publication in ACS Appl. Energy Mater.
2020.1.23
A paper "Origin of optical transparency in a transparent superconductor LiTi2O4" was accepted for the publication in ACS Appl. Electron. Mater.
2020.1.15
A paper "Low resistance at LiNi1/3Mn1/3Co1/3O2 and Li3PO4 interfaces" was accepted for the publication in Appl. Phys. Lett.
2020.1.15
Prof. Hitosugi gives a lecture at ASTEC seminar.
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2020.1.15
Prof. Hitosugi gives a lecture at symposium of JSAP spring meeting.
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2019.12.3
Our results on "Low energy consumption three-valued memory device inspired by solid-state batteries" were appeared in The Chemical Daily.
2019.12.2
Our results on "Low energy consumption three-valued memory device inspired by solid-state batteries" were press released and appeared in Nikkan Kogyo Shimbun, The Nikkei Sangyo Shimbun, EE Times Japan.
2019.12.2
A paper "Metallic Band Structure of CaF2 Thin Films Grown on Silicon(111): Possible formation of CaSi2" was accepted for the publication in Appl. Surf. Sci.
2019.11.28
A Short-term stay student joined.
2019.11.6
JST-MIRAI Project "New material development by Materials Robotics" has been adopted.
2019.11.1
A paper "Extraordinary quasi-two-dimensional magnetotransport properties of a LaAlO3/SrTiO3 heterostructure tailored with a surface TiO2 atomic sheet" was accepted for the publication in Appl. Phys. Lett.
2019.11.1
A paper "Low energy consumption three-valued memory device inspired by solid-state batteries" was accepted for the publication in ACS Appl. Mater. Interfaces.
2019.10.17
We are going to host a Workshop on hydrogen on November. 6-8, 2019.
2019.10.17
A paper "Epitaxial growth of single-phase magnesium dihydride thin films" was accepted for the publication in Inorg. Chem.
2019.10.12
Two doctor course students joined.
2019.10.12
A farewell party was held for Christopher, a short-term student.
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2019.9.16
Lodging together of seminar is held. After that, We visited AGC Inc.
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2019.9.6
Watanabe received Poster Competition Award at The 15th Solid State Ionics Seminar.
2019.9.6
Students from Tokyo Tech High School of Science and Technology visited our laboratory.
2019.8.19
A paper "Epitaxial Film Growth of LiBH4 via Molecular Unit Evaporation" was accepted for the publication in ACS Appl. Electron. Mater.
2019.8.19
Open campus was held.


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