American Journal of Modern Physics

Volume 7, Issue 4, July 2018

  • Large-Scale Bose-Einstein Condensation in an Atomic Gas by Applying an Electric Field

    Pei-Lin You

    Issue: Volume 7, Issue 4, July 2018
    Pages: 121-130
    Received: May 29, 2018
    Accepted: Jun. 21, 2018
    Published: Jul. 13, 2018
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    Abstract: Large-scale Bose-Einstein condensation (BEC) of cesium atoms has been observed (T=343K). The technical bottleneck of BEC is very small trapping volume (10-8cm3), which made the number of condensed atoms still stagnant (less than 107), much smaller than normal condensation (more than 1013), large-scale BEC has never been observed. In BEC experiment,... Show More
  • Quantization Principles Based on the Shielding Effect and Planck’s Constant in Gravitational Fields

    Hua Ma

    Issue: Volume 7, Issue 4, July 2018
    Pages: 131-135
    Received: Jul. 02, 2018
    Accepted: Jul. 11, 2018
    Published: Aug. 02, 2018
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    Abstract: To reveal the physical nature of Planck’s constant, an analytic expression of Planck's constant is presented, and based on this expression, the De Broglie’s relation and the expression of momentum operator are derived. To calculate Planck’s constant, the shielding effect of the fundamental interaction is introduced, and found that Planck’s constant... Show More
  • Effects of Donor Size and Heavy Doping on Optical, Electrical and Thermoelectric Properties of Various Degenerate Donor-Silicon Systems at Low Temperatures

    Huynh Van Cong

    Issue: Volume 7, Issue 4, July 2018
    Pages: 136-165
    Received: Jul. 01, 2018
    Accepted: Jul. 13, 2018
    Published: Aug. 08, 2018
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    Abstract: In various degenerate donor-silicon systems, taking into account the effects of donor size and heavy doping and using an effective autocorrelation function for the potential fluctuations expressed in terms of the Heisenberg uncertainty relation and also an expression for the Gaussian average of , a ≥ 1 being the kinetic energy of the electron, cal... Show More
  • Modeling and Characterization of Inconsistent Behavior of Gate Leakage Current with Threshold Voltage for Nano MOSFETs

    Yashu Swami, Sanjeev Rai

    Issue: Volume 7, Issue 4, July 2018
    Pages: 166-172
    Received: Jul. 13, 2018
    Accepted: Aug. 19, 2018
    Published: Sep. 15, 2018
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    Abstract: A strange relationship of gate leakage current and threshold voltage variation for nano MOSFETs is analyzed using factual strategy and subsequently a physical model is proffered. The gate leakage current increments with the threshold voltage before it diminishes at higher threshold voltage in nanoscale devices. This inconsistent behavior of gate le... Show More