ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Subthreshold characteristics of ballistic electron emission spectra

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Subthreshold characteristics of ballistic electron emission spectra
นักวิจัย : Qin, H. L. , Goh, K. E. J. , Bosman, Michel , Pey, Kin Leong , Troadec, C.
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Qin, H. L., Goh, K. E. J., Bosman, M., Pey, K. L., & Troadec, C. (2012). Subthreshold characteristics of ballistic electron emission spectra. Journal of applied physics, 111(1). , 0021-8979 , http://hdl.handle.net/10220/9220 , http://dx.doi.org/10.1063/1.3672698
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of applied physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

We report upon a comprehensive investigation of the subthreshold characteristics of the ballistic electron emission microscopy (BEEM) current in ballistic electron emission spectroscopy. Starting from the Bell-Kaiser model, we derive an analytical equation to describe the subthreshold behavior of the BEEM current. It is found that the BEEM current in this region should exhibit a subthreshold swing of ∼60 mV/decade at room temperature, which we experimentally verified. This finding provides a rule of thumb for the detectability of the subthreshold behavior in a spectrum. For spectra where the subthreshold behavior is discernible above the signal noise, it is demonstrated that significant deviations in the near-threshold region can occur when fitting with a simple quadratic model that ignores the subthreshold behavior. To take the subthreshold behavior into account, a simple analytical model is proposed. This model not only fits significantly better in the near threshold region than the square model, but also gives a barrier height closer to the one extracted from the Bell-Kaiser model. More significantly, this model provides a quick method to estimate the subthreshold BEEM current amplitude based on the BEEM current above the barrier height.

บรรณานุกรม :
Qin, H. L. , Goh, K. E. J. , Bosman, Michel , Pey, Kin Leong , Troadec, C. . (2555). Subthreshold characteristics of ballistic electron emission spectra.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Qin, H. L. , Goh, K. E. J. , Bosman, Michel , Pey, Kin Leong , Troadec, C. . 2555. "Subthreshold characteristics of ballistic electron emission spectra".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Qin, H. L. , Goh, K. E. J. , Bosman, Michel , Pey, Kin Leong , Troadec, C. . "Subthreshold characteristics of ballistic electron emission spectra."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Qin, H. L. , Goh, K. E. J. , Bosman, Michel , Pey, Kin Leong , Troadec, C. . Subthreshold characteristics of ballistic electron emission spectra. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.