Results 51 to 60 of about 14,384 (217)

Thermal conductivity variation of Bi2Te3 nanofilm with interfacial defects using molecular dynamics

AIP Advances, 2019
In this study, the thermal conductivity and thermal boundary resistance (TBR) of Bi2Te3 nanofilms with different interfacial defects were investigated using nonequilibrium molecular dynamics simulations, and the effects of temperature, defects (step ...
Tang-Yu Lai, Te-Hua Fang, Chao-Chun Huang   +2 more
doaj   +1 more source

Spin Polarization and Transport of Surface States in the Topological Insulators Bi2Se3 and Bi2Te3 from First Principles

, 2010
We investigate the band dispersion and the spin texture of topologically protected surface states in the bulk topological insulators Bi2Se3 and Bi2Te3 by first-principles methods.
Joel E. Moore, Oleg V. Yazyev, S. V. Eremeev, Steven G. Louie   +3 more
core   +1 more source

s‐Orbital Mediated Metavalent Bonding Enables State‐Of‐The‐Art n‐Type AgBiSe2 Thermoelectrics

Advanced Functional Materials, EarlyView.
Metavalent bonding (MVB) underpins the exceptional property portfolio of chalcogenides. Typical MVB solids are mainly found in p‐bonded systems. This work reveals that MVB can also be formed with s‐p orbital interactions upon forming a single‐electron σ‐bond, as exemplified in AgBiSe2.
Binrong Huang, Dasol Kim, Yuan Yu, Jinxuan Zhong, Jianbo Zhu, Yaoling Shen, Yu Guo, Moran Wang, Jiawei Huang, Tu Lyu, Nan Lin, Yongsheng Zhang, Matthias Wuttig, Lipeng Hu   +13 more
wiley   +1 more source

Comparison of the electronic and thermoelectric properties of three layered phases Bi2Te3, PbBi2Te4 and PbBi4Te7: LEGO thermoelectrics

AIP Advances, 2018
The electronic and thermoelectric properties of Bi2Te3, PbBi2Te4 and PbBi4Te7 were examined on the basis of density functional theory (DFT) calculations and thermoelectric transport property measurements.
Changhoon Lee, Jae Nyeong Kim, Jang-Yeul Tak, Hyung Koun Cho, Ji Hoon Shim, Young Soo Lim, Myung-Hwan Whangbo   +6 more
doaj   +1 more source

High sensitivity refractive index sensor based on surface plasmon resonance with topological insulator

Results in Physics, 2019
A high sensitivity refractive index sensor based on surface plasmon resonance (SPR) with topological insulator (Bi2Te3) has been proposed theoretically. It is demonstrated that the presented sensor exhibits an extremely great sensitivity enhancement with
Yuting Zhao, Shuaiwen Gan, Guanghua Zhang, Xiaoyu Dai   +3 more
doaj   +1 more source

Bi2Te3 photoconductive detectors on Si [PDF]

Applied Physics Letters, 2017
The peculiar properties of the gapless surface states with a Dirac cone shaped energy dispersion in topological insulators (TIs) enable promising applications in photodetection with an ultra-broad band and polarization sensitivity. Since many TIs can be easily grown on silicon (Si) substrates, TIs on Si could make an alternative route for photon ...
Juanjuan Liu, Yaoyao Li, Yuxin Song, Yingjie Ma, Qimiao Chen, Zhongyunshen Zhu, Pengfei Lu, Shumin Wang   +7 more
openaire   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Advancement in tribological performance of hexagonal Bi2Te3 nanosheets by incorporation of Ag2MoO4 nanoparticles

Hybrid Advances
The hydrothermal, and co-precipitation methods were used to synthesize bismuth telluride (Bi2Te3) nanosheets, and silver molybdate (Ag2MoO4) nanoparticles, respectively to improve the tribological activity of lubricating oil.
Somesh Singh, Muskan Sahu, Satypal Prajapati, Anup Kumar, Murli Dhar Mitra, Aditya Kumar, Dhanesh Tiwary, Dinesh K. Verma   +7 more
doaj   +1 more source

Free-standing PEDOT:PSS Film as Electrode for the Electrodeposition of Bismuth Telluride and Its Thermoelectric Performance

International Journal of Electrochemical Science, 2014
In the present work, a free-standing poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) film was used as a working electrode to electrodeposit bismuth telluride (Bi2Te3) and acted as a part of the prepared sandwich-like structured ...
Qinglin Jiang, Congcong Liu, Haijun Song, Jingkun Xu, Daize Mo, Hui Shi, Zhipeng Wang, Fengxing Jiang, Baoyang Lu, Zhengyou Zhu   +9 more
doaj   +1 more source

Exfoliated Bi2Te3 nanoparticle suspensions and films: morphological and nonlinear optical characterization

Nanophotonics, 2021
Bismuth telluride nanoparticles (NPs) attract attention due to the growth of sensitivity of the Bi2Te3 NPs-containing registrars in the near- and mid-infrared ranges.
Ganeev Rashid A., Popov V. S., Zvyagin A. I., Lavrentyev N. A., Mirofyanchenko A. E., Mirofyanchenko E. V., Shuklov I. A., Ovchinnikov O. V., Ponomarenko V. P., Razumov V. F.   +9 more
doaj   +1 more source