scholarly journals Ambipolar transport in bulk crystals of a topological insulator by gating with ionic liquid

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
Kouji Segawa ◽  
Zhi Ren ◽  
Satoshi Sasaki ◽  
Tetsuya Tsuda ◽  
Susumu Kuwabata ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Topological Insulator ◽  
Bulk Crystals ◽  
Ambipolar Transport

Thermoelectric transport in topological insulator Bi2Te2Se bulk crystals

2013 ◽  
Vol 1543 ◽  
pp. 9-12
Author(s):  
Yang Xu ◽  
Helin Cao ◽  
Ireneusz Miotkowski ◽  
Yong P. Chen
Keyword(s):  
Transport Properties ◽  
Topological Insulator ◽  
Resistivity Measurement ◽  
Bulk Crystals ◽  
Thermoelectric Transport

ABSTRACTBi2Te2Se (BTS221) bulk crystals were recently discovered as an intrinsic 3D topological insulator. We have synthesized this material, and studied the transport properties of BTS221 from the thermoelectrics perspective. Temperature (T) dependent resistivity measurement indicates surface dominant transports in our sample at low T. We also report Seebeck measurement between 50K to room T.

Ambipolar transport in Mn2CoAl films by ionic liquid gating

2017 ◽  
Vol 110 (20) ◽  
pp. 202405 ◽  
Author(s):  
Kenji Ueda ◽  
Shingo Hirose ◽  
Hidefumi Asano
Keyword(s):  
Ionic Liquid ◽  
Ambipolar Transport

scholarly journals Ambipolar transport in CVD grown MoSe2 monolayer using an ionic liquid gel gate dielectric

AIP Advances ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 035014 ◽  
Author(s):  
Deliris N. Ortiz ◽  
Idalia Ramos ◽  
Nicholas J. Pinto ◽  
Meng-Qiang Zhao ◽  
Vinayak Kumar ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Gate Dielectric ◽  
Ambipolar Transport

Liquid-Gated Ambipolar Transport in Ultrathin Films of a Topological Insulator Bi2Te3

Nano Letters ◽  
2011 ◽  
Vol 11 (7) ◽  
pp. 2601-2605 ◽  
Author(s):  
Hongtao Yuan ◽  
Hongwen Liu ◽  
Hidekazu Shimotani ◽  
Hua Guo ◽  
Mingwei Chen ◽  
...  
Keyword(s):  
Topological Insulator ◽  
Ultrathin Films ◽  
Ambipolar Transport

scholarly journals Magnetized topological insulator multilayers

2020 ◽  
Vol 117 (44) ◽  
pp. 27224-27230
Author(s):  
Chao Lei ◽  
Shu Chen ◽  
Allan H. MacDonald
Keyword(s):  
Topological Insulator ◽  
Density Functional ◽  
Degrees Of Freedom ◽  
Arbitrary Order ◽  
Anomalous Hall Effect ◽  
Bulk Crystals ◽  
Dirac Cone ◽  
Film Properties ◽  
Functional Theory ◽  
Cone Model

We discuss the magnetic and topological properties of bulk crystals and quasi–two-dimensional (quasi-2D) thin films formed by stacking intrinsic magnetized topological insulator (for example, Mn (SbxBi1−x)2X4with X = Se,Te) septuple layers and topological insulator quintuple layers in arbitrary order. Our analysis makes use of a simplified model that retains only Dirac cone degrees of freedom on both surfaces of each septuple or quintuple layer. We demonstrate the model’s applicability and estimate its parameters by comparing with ab initio density-functional theory (DFT) calculations. We then employ the coupled Dirac cone model to provide an explanation for the dependence of thin-film properties, particularly the presence or absence of the quantum anomalous Hall effect, on film thickness, magnetic configuration, and stacking arrangement, and to comment on the design of Weyl superlattices.

scholarly journals Conductance modulation in topological insulator Bi2Se3 thin films with ionic liquid gating

2013 ◽  
Vol 103 (21) ◽  
pp. 213114 ◽  
Author(s):  
Jaesung Son ◽  
Karan Banerjee ◽  
Matthew Brahlek ◽  
Nikesh Koirala ◽  
Seoung-Ki Lee ◽  
...  
Keyword(s):  
Thin Films ◽  
Ionic Liquid ◽  
Topological Insulator ◽  
Conductance Modulation

Lattice imaging and pore structure of β ferric oxyhydroxide

1978 ◽  
Vol 36 (1) ◽  
pp. 264-265
Author(s):  
T. Baird ◽  
J.R. Fryer ◽  
S.T. Galbraith
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bulk Material ◽  
Model Structure ◽  
Bulk Crystals ◽  
Lattice Imaging ◽  
Thin Sections ◽  
Ferric Oxyhydroxide ◽  
Resolution Electron ◽  
Hydrolysis Of

Introduction Previously we had suggested (l) that the striations observed in the pod shaped crystals of β FeOOH were an artefact of imaging in the electron microscope. Contrary to this adsorption measurements on bulk material had indicated the presence of some porosity and Gallagher (2) had proposed a model structure - based on the hollandite structure - showing the hollandite rods forming the sides of 30Å pores running the length of the crystal. Low resolution electron microscopy by Watson (3) on sectioned crystals embedded in methylmethacrylate had tended to support the existence of such pores.We have applied modern high resolution techniques to the bulk crystals and thin sections of them without confirming these earlier postulatesExperimental β FeOOH was prepared by room temperature hydrolysis of 0.01M solutions of FeCl3.6H2O, The precipitate was washed, dried in air, and embedded in Scandiplast resin. The sections were out on an LKB III Ultramicrotome to a thickness of about 500Å.

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