Valley Polarization of Landau Levels in the ZrSiS Surface Band Driven by Residual Strain

Authors: Christopher J. Butler, Masayuki Murase, Shunki Sawada, Ming-Chun Jiang, Daisuke Hashizume, Guang-Yu Guo, Ryotaro Arita, Tetsuo Hanaguri, Takao Sasagawa

Source: Physical Review X, Vol 15, Iss 1, p 011033 (2025)

Subject Terms: Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/2160-3308

Access URL: https://doaj.org/article/e5e5921d2cb444348e46c7a6065d770a

Dry pick-and-flip assembly of van der Waals heterostructures for microfocus angle-resolved photoemission spectroscopy

Authors: Satoru Masubuchi, Masato Sakano, Yuma Tanaka, Yusai Wakafuji, Takato Yamamoto, Shota Okazaki, Kenji Watanabe, Takashi Taniguchi, Jincai Li, Hirotaka Ejima, Takao Sasagawa, Kyoko Ishizaka, Tomoki Machida

Source: Scientific Reports, Vol 12, Iss 1, Pp 1-7 (2022)

Subject Terms: Medicine, Science

File Description: electronic resource

Relation: https://doaj.org/toc/2045-2322

Access URL: https://doaj.org/article/6c887317e2414728af8c3799fccb54cc

Giant second harmonic transport under time-reversal symmetry in a trigonal superconductor

Authors: Yuki M. Itahashi, Toshiya Ideue, Shintaro Hoshino, Chihiro Goto, Hiromasa Namiki, Takao Sasagawa, Yoshihiro Iwasa

Source: Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)

Subject Terms: Science

File Description: electronic resource

Relation: https://doaj.org/toc/2041-1723

Access URL: https://doaj.org/article/9d5cecb669324f3793e2f352b239d1c7

Polarity-dependent twist-controlled resonant tunneling device based on few-layer WSe_{2}

Authors: Kei Kinoshita, Rai Moriya, Shota Okazaki, Yijin Zhang, Satoru Masubuchi, Kenji Watanabe, Takashi Taniguchi, Takao Sasagawa, Tomoki Machida

Source: Physical Review Research, Vol 5, Iss 4, p 043292 (2023)

Subject Terms: Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/2643-1564

Access URL: https://doaj.org/article/5b1c1188929142f685299cf6dfd71ecb

Odd-even layer-number effect of valence-band spin splitting in WTe_{2}

Authors: Masato Sakano, Yuma Tanaka, Satoru Masubuchi, Shota Okazaki, Takuya Nomoto, Atsushi Oshima, Kenji Watanabe, Takashi Taniguchi, Ryotaro Arita, Takao Sasagawa, Tomoki Machida, Kyoko Ishizaka

Source: Physical Review Research, Vol 4, Iss 2, p 023247 (2022)

Subject Terms: Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/2643-1564

Access URL: https://doaj.org/article/51af2aa3087e4d41a4ac26b1280deaa6

Emergence of superconductivity in the cuprates via a universal percolation process

Authors: Damjan Pelc, Marija Vučković, Mihael S. Grbić, Miroslav Požek, Guichuan Yu, Takao Sasagawa, Martin Greven, Neven Barišić

Source: Nature Communications, Vol 9, Iss 1, Pp 1-10 (2018)

Subject Terms: Science

File Description: electronic resource

Relation: https://doaj.org/toc/2041-1723

Access URL: https://doaj.org/article/0a5a489cc009475595be9c9e84e70811

Proximity-Induced Superconducting States of Magnetically Doped 3D Topological Insulators with High Bulk Insulation

Authors: Rikizo Yano, Hishiro T. Hirose, Kohei Tsumura, Shuhei Yamamoto, Masao Koyanagi, Manabu Kanou, Hiromi Kashiwaya, Takao Sasagawa, Satoshi Kashiwaya

Source: Condensed Matter, Vol 4, Iss 1, p 9 (2019)

Subject Terms: unconventional superconducting states, magnetized topological insulators, proximity effects, crystal growth, junction fabrication process, Physics, QC1-999

File Description: electronic resource

Relation: http://www.mdpi.com/2410-3896/4/1/9; https://doaj.org/toc/2410-3896

Access URL: https://doaj.org/article/da4882d6d5db479fa4ad1334f7d4b630

Observation of nodal line in non-symmorphic topological semimetal InBi

Authors: Sandy Adhitia Ekahana, Shu-Chun Wu, Juan Jiang, Kenjiro Okawa, Dharmalingam Prabhakaran, Chan-Cuk Hwang, Sung-Kwan Mo, Takao Sasagawa, Claudia Felser, Binghai Yan, Zhongkai Liu, Yulin Chen

Source: New Journal of Physics, Vol 19, Iss 6, p 065007 (2017)

Subject Terms: topological semimetal, nodal line semimetal, topological material, Science, Physics, QC1-999

File Description: electronic resource

Relation: https://doaj.org/toc/1367-2630

Access URL: https://doaj.org/article/c477aa577eb24f24aab9367cc9e57818

Preparation of SiO2-Capped Sr2MgSi2O7:Eu,Dy Nanoparticles with Laser Ablation in Liquid

Authors: Mika Ishizaki, Takao Katagiri, Takao Sasagawa, Yoshitaka Kitamoto, Osamu Odawara, Hiroyuki Wada

Source: Journal of Nanotechnology, Vol 2012 (2012)

Subject Terms: Technology (General), T1-995

File Description: electronic resource

Relation: https://doaj.org/toc/1687-9503; https://doaj.org/toc/1687-9511

Access URL: https://doaj.org/article/a79a0e12053142eab9b4bee8729cac36

Bandgap modulation in photoexcited topological insulator Bi2Te3 via atomic displacements.

Authors: Masaki Hada, Katsura Norimatsu, Sei'ichi Tanaka, Sercan Keskin, Tetsuya Tsuruta, Kyushiro Igarashi, Tadahiko Ishikawa, Yosuke Kayanuma, Miller, R. J. Dwayne, Ken Onda, Takao Sasagawa, Shin-ya Koshihara, Nakamura, Kazutaka G.

Source: Journal of Chemical Physics; 2016, Vol. 145 Issue 2, p1-9, 9p, 2 Diagrams, 7 Graphs

Subject Terms: TOPOLOGICAL insulators, CIRCULAR polarization, ELECTRON transport, ENERGY bands, PHOTOEXCITATION, BISMUTH compounds, ATOMIC displacements

Dynamics of all the Raman-active coherent phonons in Sb2Te3 revealed via transient reflectivity.

Authors: Katsura Norimatsu^1,2,3, Masaki Hada^1,4, Shuhei Yamamoto¹, Takao Sasagawa¹, Masahiro Kitajima^1,3, Yosuke Kayanuma^1,3, Nakamura, Kazutaka G.^1,3, nakamura@msl.titech.ac.jp

Source: Journal of Applied Physics; 2015, Vol. 117 Issue 14, p143102-1-143102-6, 6p, 1 Chart, 5 Graphs

Dynamics of all the Raman-active coherent phonons in Sb2Te3 revealed via transient reflectivity.

Authors: Katsura Norimatsu, Masaki Hada, Shuhei Yamamoto, Takao Sasagawa, Masahiro Kitajima, Yosuke Kayanuma, Nakamura, Kazutaka G.

Source: Journal of Applied Physics; 2015, Vol. 117 Issue 14, p143102-1-143102-6, 6p, 1 Chart, 5 Graphs

Subject Terms: PHONONS, RAMAN scattering, BISMUTH, CHALCOGENIDES, PHOTOELECTRON spectroscopy

Local Observations of Orbital Diamagnetism and Excitation in Three-Dimensional Dirac Fermion Systems Bi1-xSbx.

Authors: Yukihiro Watanabe, Masashi Kumazaki, Hiroki Ezure, Takao Sasagawa, Cava, Robert, Masayuki Itoh, Yasuhiro Shimizu

Source: Journal of the Physical Society of Japan; 5/15/2021, Vol. 90 Issue 5, p1-5, 5p

Pressure-induced topological phase transition in noncentrosymmetric elemental tellurium.

Authors: Toshiya Ideue, Motoaki Hirayama, Hiroaki Taiko, Takanari Takahashi, Masayuki Murase, Takashi Miyake, Shuichi Murakami, Takao Sasagawa, Yoshihiro Iwasa

Source: Proceedings of the National Academy of Sciences of the United States of America; 12/17/2019, Vol. 116 Issue 51, p25530-25534, 5p

Subject Terms: PHASE transitions, TELLURIUM, PHASE oscillations, TOPOLOGICAL property, CYCLOTRONS

Crystal Growth and Intrinsic Properties of ACrX2 (A = Cu, Ag; X = S, Se) without a Secondary Phase.

Authors: Rikizo Yano¹, Takao Sasagawa¹ sasagawa@msl.titech.ac.jp

Source: Crystal Growth & Design. Oct2016, Vol. 16 Issue 10, p5618-5623. 6p.

Subject Terms: *CRYSTAL growth, *CHROMIUM compounds, *CRYSTAL symmetry, *NONLINEAR optics, *SYMMETRY breaking, *ELECTRICAL resistivity

Crystal growth and electronic properties of a 3D Rashba material, BiTeI, with adjusted carrier concentrations.

Authors: Manabu Kanou, Takao Sasagawa

Source: Journal of Physics: Condensed Matter; 2013, Vol. 25 Issue 13, p1-6, 6p

Preparation of SiO2-Capped Sr2MgSi2O7:Eu,Dy Nanoparticles with Laser Ablation in Liquid.

Authors: Mika Ishizaki, Takao Katagiri, Takao Sasagawa, Yoshitaka Kitamoto, Osamu Odawara, Hiroyuki Wada

Source: Journal of Nanotechnology; 2012, p1-6, 6p

Subject Terms: OPTICAL properties, NANOPARTICLES, SILICA, STRONTIUM compounds, LASER ablation, PHOTOLUMINESCENCE, RARE earth metals, SONICATION, NANOCRYSTALS

The second peak effect observed in Sr-overdoped (La 1− xSr x) 2CuO 4−δ single crystals with various oxygen deficiencies δ

Authors: Masayuki Okuya, Takao Sasagawa, Tsuyoshi Kimura, Jun-ichi Shimoyama, Koichi Kitazawa, Kohji Kishio

Source: In Physica C: Superconductivity and its applications 1996 271(3):265-271

Picosecond dynamics in layered cobalt perovskites studied by time-resolved Raman spectroscopy.

Authors: Ryo Fukaya^1,2 ryo.fukaya@kek.jp, Nao Yamaya¹, Tadahiko Ishikawa¹ tishi@chem.titech.ac.jp, Shin-ya Koshihara¹ skoshi@chem.titech.ac.jp, Yoichi Okimoto¹ okimoto.y.aa@m.titech.ac.jp, Ken Onda³ konda@chem.kyushu-univ.jp, Akira Isayama⁴, Takao Sasagawa⁴ sasagawa.t.aa@m.titech.ac.jp, Kazumasa Horigane⁵ k-horigane@okayama-u.ac.jp

Source: Comptes Rendus Physique. 2021 Special Issue, Vol. 22 Issue S2, p95-102. 8p.

Subject Terms: *RAMAN spectroscopy, *TIME-resolved spectroscopy, *REFLECTANCE spectroscopy, *PICOSECOND pulses, *CHARGE-transfer transitions, *PEROVSKITE

Absorption of diffusive spin current in surface and bulk states of a topological insulator.

Authors: Akiyo Nomura¹, Nariaki Nasaka², Takaharu Tashiro¹, Takao Sasagawa², Kazuya Ando^1,3 ando@appi.keio.ac.jp

Source: Physical Review B. 12/1/2017, Vol. 96 Issue 21, p1-1. 1p.

Subject Terms: *TOPOLOGICAL insulators, *NUCLEAR spin, *ABSORPTION, *MAGNETIZATION, *SPIN-orbit interactions, *QUANTITATIVE research