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Study of device characteristics of intrinsic Josephson junction terahertz emitters related to annealing conditions of the crystals
Description/Abstract:
We fabricated terahertz (THz) wave emitters from high-temperature superconductor Bi2 Sr2 CaCu2 O8þδ (Bi2212) single crystals annealed und...
Keyword:
Josephson junction
,
annealing condition
,
high-temperature superconductor
, and
terahertz emitter
Resource Type:
Article
Author:
S. Nakagawa
,
T. Shizu
,
T. Imai
,
M. Nakayama
,
J. Kim
,
H. Minami
,
K. Kadowaki
,
M. Tsujimoto
,
H. Nakao
,
H. Eisaki
,
S. Ishida
,
T. Mochiku
,
Y. Hasegawa
, and
T. Kashiwagi
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
26/04/2024
べき乗則で解釈されるスペクトルの閾値及びべき乗数の自動解析方法
Description/Abstract:
べき乗則に従うスペクトルのべき乗数とべき乗の増加が始まる閾値の自動推定方法(1/n-Power Plot法およびShift-Log-Log Plot法)を提案する。1/n-Power Plot法ではべき乗数の事前情報がある場合に利用し、べき乗数の逆数をスペクトルに適用するこ...
Keyword:
Automatic estimation methods
,
Power Law
, and
threshold
Resource Type:
Dataset
Data origin:
others
Author:
柳生 進二郎
,
吉武 道子
, and
長田 貴弘
Journal:
Journal of Surface Analysis
Date Uploaded:
26/04/2024
Comparative Studies on [B(HFIP)<sub>4</sub>]-Based Electrolytes with Mono- and Divalent Cations
Description/Abstract:
We conducted comprehensive comparative studies on the representative WCA-based electrolytes incorporating tetrakis(hexafluoro-iso-propoxy...
Keyword:
borate
,
divalent metal
,
electrolyte
,
monovalent metal
, and
stability
Resource Type:
Article
Author:
Toshihiko Mandai
,
Hiroko Naya
, and
Hyuma Masu
Journal:
The Journal of Physical Chemistry C
Date Uploaded:
20/04/2024
Magnetotransport properties in van der Waals <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>R</mml:mi><mml:msub><mml:mi>Te</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>(</mml:mo><mml:mi>R</mml:mi><mml:mo>=</mml:mo><mml:mi>La</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Ce</mml:mi><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mi>Tb</mml:mi><mml:mo>)</mml:mo></mml:math>
Description/Abstract:
Rare-earth tritellurides are van-der-Waals antiferromagnets which have been attracting attention as materials not only with high mobility...
Keyword:
Antiferromagnetism
,
Charge density waves
,
Hall effect
,
Magnetic thin films
,
Magnetoresistance
,
Rare-earth magnetic materials
, and
Shubnikov-de Haas effect
Resource Type:
Article
Author:
Tomo Higashihara
,
Ryotaro Asama
,
Ryoya Nakamura
,
Mori Watanabe
,
Nanami Tomoda
,
Thomas Johannes Hasiweder
,
Yuita Fujisawa
,
Yoshinori Okada
,
Takuya Iwasaki
,
Kenji Watanabe
,
Takashi Taniguchi
,
Nan Jiang
, and
Yasuhiro Niimi
Journal:
Physical Review B
Date Uploaded:
19/04/2024
Inelastic neutron scattering studies on the eight-spin zigzag-chain compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>KCu</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">P</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>12</mml:mn></mml:msub></mml:mrow></mml:math>: Confirmation of the validity of a data-driven technique based on machine learning
Description/Abstract:
We performed inelastic neutron scattering (INS) experiments on KCu4P3O12 powder and compared the experimental results with those calculat...
Keyword:
Inelastic neutron scattering
,
data-driven technique based on machine learning
, and
eight-spin zigzag-chain compound KCu4P3O12
Resource Type:
Article
Author:
Masashi Hase
,
Ryo Tamura
,
Koji Hukushima
,
Shinichiro Asai
,
Takatsugu Masuda
,
Shinichi Itoh
, and
Andreas Dönni
Journal:
Physical Review B
Date Uploaded:
18/04/2024
有機アンチ・アンバイポーラトランジスタを用いた多機能論理回路
Description/Abstract:
有機集積回路は、電子タグやヘルスケアーセンサーと組み合わせてリアルタイムの信号を処理するA/Dコンバーターとしての応用が期待されている。しかしながら、単体トランジスタのサイズは未だサブmm程度で集積密度は依然として低い。そのため、素子の微細化だけに依存しない有機集積回路の...
Keyword:
アンチ・アンバイポーラトランジスタ
,
ロジック・イン・メモリ
,
再構成可能2入力論理回路
,
多値論理回路
, and
負性微分トランスコンダクタンス
Resource Type:
Article
Author:
早川 竜馬
,
Panigrahi Debdatta
, and
若山 裕
Journal:
Accounts of Materials & Surface Research
Date Uploaded:
16/04/2024
Anisotropic optical conductivity accompanied by a small energy gap in the one-dimensional thermoelectric telluride <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Ta</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:msub><mml:mi>SiTe</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>
Description/Abstract:
We investigated the optical properties of single crystals of one-dimensional van der Waals crystal Ta4SiTe4, which exhibited high thermoe...
Keyword:
Optical Conductivity
,
one-dimensional
, and
van der Waals
Resource Type:
Article
Author:
Fumiya Matsunaga
,
Yoshihiko Okamoto
,
Yasunori Yokoyama
,
Kanji Takehana
,
Yasutaka Imanaka
,
Yuto Nakamura
,
Hideo Kishida
,
Shoya Kawano
,
Kazuyuki Matsuhira
, and
Koshi Takenaka
Journal:
Physical Review B
Date Uploaded:
11/04/2024
Bias voltage effects on tunneling magnetoresistance in Fe/MgAl2O4/Fe(001) junctions: Comparative study with Fe/MgO/Fe(001) junctions
Description/Abstract:
スピネルバリアを用いた磁気トンネル接合Fe/MgAl2O4/Feの電圧特性を理論的に解析し、その結果をFe/MgO/Feの電圧特性と比較した。その結果、Fe/MgAl2O4/Feでは電極でのバンド折りたたみが起こるため、磁気抵抗比の電圧耐性がFe/MgO/Feよりも高くなる...
Keyword:
Magnetic tunnel junction
,
Spinel
,
Spintronics
, and
Tunnel magnetoresistance
Resource Type:
Article
Author:
Keisuke Masuda
and
Yoshio Miura
Journal:
Physical Review B
Date Uploaded:
11/04/2024
First-principles study of the anisotropic magneto-Peltier effect
Description/Abstract:
We study theoretically the anisotropic magneto-Peltier effect, which was recently demonstrated experimen-tally. A first-principles-based ...
Keyword:
Peltier effect
,
Spin caloritronics
, and
Spintronics
Resource Type:
Article
Author:
Keisuke Masuda
,
Ken-ichi Uchida
,
Ryo Iguchi
, and
Yoshio Miura
Journal:
Physical Review B
Date Uploaded:
11/04/2024
First-principles study on magnetic tunneling junctions with semiconducting CuInSe2and CuGaSe2barriers
Description/Abstract:
半導体バリアCuInSe2、CuGaSe2を持つ磁気トンネル接合の伝導特性を第一原理計算によって調べた。その結果、両トンネル接合でΔ1状態の波動関数のコヒーレントトンネル現象が生じ、高いMR比が得られることが分かった。
Keyword:
Magnetic tunnel junction
,
Spintronics
, and
Tunnel magnetoresistance
Resource Type:
Article
Author:
Keisuke Masuda
and
Yoshio Miura
Journal:
Japanese Journal of Applied Physics
Date Uploaded:
11/04/2024
Giant interfacial perpendicular magnetic anisotropy in Fe/CuIn1−xGaxSe2 beyond Fe/MgO
Description/Abstract:
We study interfacial magnetocrystalline anisotropies in various Fe/semiconductor heterostructures by means of first-principles calculatio...
Keyword:
Magnetic anisotropy
,
Magnetic tunnel junction
, and
Spintronics
Resource Type:
Article
Author:
Keisuke Masuda
,
Shinya Kasai
,
Yoshio Miura
, and
Kazuhiro Hono
Journal:
Physical Review B
Date Uploaded:
11/04/2024
Perpendicular magnetic anisotropy at the Fe/MgAl2O4 interface: Comparative first-principles study with Fe/MgO
Description/Abstract:
磁気ヘテロ接合Fe/MgAl2O4の界面の磁気異方性について第一原理計算に基づいた解析を行った。垂直磁気異方性が得られることがわかり、その起源についても微視的な解析によって理解が得られた。また、より大きな垂直磁気異方性を得る手段として界面への重元素挿入の可能性についても検討した。
Keyword:
Magnetic anisotropy
,
Magnetic tunnel junction
, and
Spintronics
Resource Type:
Article
Author:
Keisuke Masuda
and
Yoshio Miura
Journal:
Physical Review B
Date Uploaded:
11/04/2024
Exotic magnetism in perovskite KOsO3
Description/Abstract:
A new perovskite KOsO3 has been stabilized under high-pressure and high-temperature conditions. It is cubic at 500 K (Pm-3m) and undergoe...
Keyword:
KOsO3
Resource Type:
Article
Author:
Jie Chen
,
Hongze Li
,
Javier Gainza
,
Angel Munoz
,
Jose A. Alonso
,
Jue Liu
,
Yu-Sheng Chen
,
ベリック アレクセイ
,
山浦 一成
,
Jiaming He
,
Xinyu Li
,
John B. Goodenough
, and
J.-S. Zhou
Journal:
PHYSICAL REVIEW LETTERS
Date Uploaded:
10/04/2024
Chemical-substitution-driven giant anomalous Hall and Nernst effects in magnetic cubic Heusler compounds
Description/Abstract:
Chemical substitution efficiently optimizes the physical properties of Heusler compounds, especially their anomalous transport properties...
Keyword:
Anomalous Hall conductivity
,
Anomalous Nernst conductivity
,
Heusler compounds
, and
High-throughput screening
Resource Type:
Article
Author:
Guangzong Xing
,
Keisuke Masuda
,
Terumasa Tadano
, and
Yoshio Miura
Journal:
Acta Materialia
Date Uploaded:
09/04/2024
Critical current improvement and resistance evaluation of superconducting joint between Bi2223 tapes
Description/Abstract:
We improved the critical current (Ic) of the superconducting joint between the Bi2223 tapes by introducing the two-step sintering process...
Keyword:
Superconducting joint
Resource Type:
Article
Author:
Y Takeda
,
K Kobayashi
,
A Uchida
,
H Kitaguchi
,
G Nishijima
,
Y Yanagisawa
,
T Nakashima
,
S Yamade
,
S Kobayashi
,
T Kato
,
S Nakamura
,
T Motoki
, and
J Shimoyama
Journal:
Superconductor Science and Technology
Date Uploaded:
05/04/2024
Development of a Persistent Current Mode 9.39 T (400 MHz) LTS/Bi-2223 NMR Magnet With a Bi-2223 Superconducting Joint
Description/Abstract:
We developed and operated a persistent current (PC) mode 9.39 T (400 MHz for 1H NMR) LTS/Bi-2223 NMR magnet using a Bi-2223 insert coil w...
Keyword:
Persistent current
Resource Type:
Article
Author:
Y. Takeda
,
Y. Suetomi
,
U. Nakai
,
R. Piao
,
Y. Matsutake
,
T. Yagai
,
T. Motoki
,
J. Shimoyama
,
M. Hamada
,
K. Saito
, and
Y. Yanagisawa
Journal:
IEEE Transactions on Applied Superconductivity
Date Uploaded:
05/04/2024
Review of the temporal stability of the magnetic field for ultra-high field superconducting magnets with a particular focus on superconducting joints between HTS conductors
Description/Abstract:
Superconducting magnets used in applications such as magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) require signif...
Keyword:
Superconducting joint
Resource Type:
Article
Author:
Y Takeda
,
H Maeda
,
K Ohki
, and
Y Yanagisawa
Journal:
Superconductor Science and Technology
Date Uploaded:
05/04/2024
Consideration of Magnetic Flux Distribution in Multi−Filamented YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7−δ</sub> Films by Controlling Crystal Array Using Surface−Modified Substrate
Description/Abstract:
Large direct currents can flow through REBa2Cu3O7−δ (REBCO) wires without energy loss because of zero resistance. However, they suffer fr...
Keyword:
Multi−filamentary superconductors
Resource Type:
Article
Author:
Hiroki Fujimoto
,
Akiyoshi Matsumoto
,
Shuuichi Ooi
,
Minoru Tachiki
,
Masayoshi Inoue
, and
Ryo Teranishi
Journal:
IEEE Transactions on Applied Superconductivity
Date Uploaded:
05/04/2024
Optimum asymmetry for nanofabricated refractometric sensors at quasi-bound states in the continuum
Description/Abstract:
A symmetry-protected bound state in the continuum (BIC) is one of the bases for high-resolution photonic refractometric sensors that rely...
Keyword:
BIC
,
biosensors
,
bound states in the continuum
, and
metasurfaces
Resource Type:
Article
Author:
Keisuke Watanabe
and
Masanobu Iwanaga
Journal:
Applied Physics Letters
Date Uploaded:
03/04/2024
Quantitative characterization of built-in potential profile across GaAs p–n junctions using Kelvin probe force microscopy with qPlus sensor AFM
Description/Abstract:
The electrostatic potential distribution in materials and devices plays an important role in controlling the behaviors of charge carriers...
Keyword:
GaAs(110)
,
Kelvin probe force microscopy
,
p-n junction
, and
qPlus sensor
Resource Type:
Article
Author:
Nobuyuki Ishida
and
Takaaki Mano
Journal:
Nanotechnology
Date Uploaded:
03/04/2024
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