IEEE Organizations related to Surface States

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Periodicals related to Surface States

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Most published Xplore authors for Surface States

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Xplore Articles related to Surface States

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Experiments on topological nodal chains

2018 Conference on Lasers and Electro-Optics (CLEO), 2018

We theoretically predicted and experimentally verified mirror-protected nodal chains in a metallic-mesh photonic crystal at microwave frequencies. The bulk states were detected through angle-resolved transmission and drumhead surface states were mapped out by field scans.


Scattering Mechanisms in Inversion Layers of Ge MOSFETs: Impact of Surface States and Carrier Effective Masses

2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S), 2018

The physical origins resulting in the high Ns mobility reduction in Ge MOSFETs have been examined. It is found that the surface states and the increase of carrier effective mass exhibit significant impact of the high Ns mobility in Ge channels.


Ultrafast Semiconducting to Metallic Terahertz Responses in the Topological Insulator Bi2Se3

2018 Conference on Lasers and Electro-Optics (CLEO), 2018

We present the photoinduced terahertz responses of topological insulators Bi2Se3. The photoconductance sign is determined by the competition between the topological surface state and the bulk response in n-type, p-type and bulk- insulating Bi2Se3.


InAs Nanowires with Surface States as Building Blocks for Tube-Like Electrical Sensing Devices

Future Trends in Microelectronics: Frontiers and Innovations, None

This chapter contains sections titled:IntroductionCharge Carrier Density in Intrinsic and Doped InAs NanowiresConclusions]]>


Proposal for novel magnetic memory device with spin momentum locking materials

2017 IEEE/ACM International Symposium on Nanoscale Architectures (NANOARCH), 2017

In this work, novel magnetic memory device is proposed based on fascinating Spin Momentum Locking (SML) materials. The device utilizes direct spin current to charge current conversion and don't need Magnetic Tunneling Junction (MTJ) structure. The NOR, NAND and 3D array structure of the proposed magnetic memory device are demonstrated and discussed.


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Educational Resources on Surface States

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IEEE-USA E-Books

  • Experiments on topological nodal chains

    We theoretically predicted and experimentally verified mirror-protected nodal chains in a metallic-mesh photonic crystal at microwave frequencies. The bulk states were detected through angle-resolved transmission and drumhead surface states were mapped out by field scans.

  • Scattering Mechanisms in Inversion Layers of Ge MOSFETs: Impact of Surface States and Carrier Effective Masses

    The physical origins resulting in the high Ns mobility reduction in Ge MOSFETs have been examined. It is found that the surface states and the increase of carrier effective mass exhibit significant impact of the high Ns mobility in Ge channels.

  • Ultrafast Semiconducting to Metallic Terahertz Responses in the Topological Insulator Bi2Se3

    We present the photoinduced terahertz responses of topological insulators Bi2Se3. The photoconductance sign is determined by the competition between the topological surface state and the bulk response in n-type, p-type and bulk- insulating Bi2Se3.

  • InAs Nanowires with Surface States as Building Blocks for Tube-Like Electrical Sensing Devices

    This chapter contains sections titled:IntroductionCharge Carrier Density in Intrinsic and Doped InAs NanowiresConclusions]]>

  • Proposal for novel magnetic memory device with spin momentum locking materials

    In this work, novel magnetic memory device is proposed based on fascinating Spin Momentum Locking (SML) materials. The device utilizes direct spin current to charge current conversion and don't need Magnetic Tunneling Junction (MTJ) structure. The NOR, NAND and 3D array structure of the proposed magnetic memory device are demonstrated and discussed.

  • Universal spin-momentum locking of light

    We show the existence of an inherent handedness (spin) of evanescent- electromagnetic-waves which is fundamentally locked to the direction of propagation (momentum). It is universal and accompanies evanescent waves in total internal reflection, waveguides/fibers and surface-states. The hallmark of the recently discovered quantum spin hall (QSH) state of matter is the existence of electronic surface states which are robust to disorder (non- magnetic impurities). This property arises since the spin of the electron is intrinsically locked to the direction of propagation (momentum) and the electrons cannot backscatter unless there is a spin-flip. Recent work on topological photonics has shed light on electromagnetic surface states which are immune to disorder and show similar effects as the electrons. However, the presence of spin-orbit coupling has been considered fundamental to the origin of this spin-momentum locking effect in both electronics and photonics.

  • Strain tuning of optical properties in Bi2Se3

    Based on symmetry principles we determine the most general Hamiltonian for the low energy physics of Bi2Se3, including contributions due to a static electric field and strain. The full three-dimensional model is projected into the surface states at k∥= 0, giving an effective two-dimensional Hamiltonian for the surface states. Contributions from the strain tensor breaks the anisotropy of the surface state spectrum, giving an elleptical Dirac cone. Within this model we calculate the absorption spectrum for an ultra-thin film. We show that the fundamental absorption edge can be effectively tuned by application of uniaxial strain.

  • Experimental observation of optical Weyl points and Fermi arcs

    We present the experimental observation of type-II optical Weyl points and corresponding Fermi arcs in a three-dimensional photonic structure. We employ a system composed of an array of staggered helical waveguides fabricated using the direct laser writing technique. Weyl points are established by observing conical diffraction and Fermi arcs are demonstrated by showing surface confinement (and deconfinement) at wavelengths above (below) the Weyl point.

  • Photonic Weyl point in a 2D resonator array with a synthetic frequency dimension

    We propose a realization of Weyl point in two-dimensional arrays of resonators undergoing dynamic modulation. Our system provides an on-chip platform to explore Weyl points under different symmetries and demonstrate topological surface state in synthetic space.

  • ITO-Nano-Titania Gas Sensors at Adsorption of Ethanol, Acetone and Water Molecules

    The measurements of capacitance-voltage characteristics and capacitance kinetics were applied for investigation of physical principle of sensor response in the ITO - nanostructured titanium dioxide heterojunction. The studies were fulfilled for ethanol, acetone and water vapor under various frequencies of probing signal. It was shown that processes of surface states recharging are making the most significant contribution to the total capacitance of the studied heterojunction and playing a major role in forming of sensor response to the molecules of the used analytes.



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