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Zone folding effect in Raman G-band intensity of twisted bilayer graphene

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Zone folding effect in Raman G-band intensity of twisted bilayer graphene
นักวิจัย : Sato, Kentaro , Saito, Riichiro , Cong, Chunxiao , Yu, Ting , Dresselhaus, Mildred S.
คำค้น : DRNTU::Science::Physics::Atomic physics.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Sato, K., Saito, R., Cong, C., Yu, T., & Dresselhaus, M. S. (2012). Zone folding effect in Raman G-band intensity of twisted bilayer graphene. Physical Review B, 86(12), 125414-. , http://hdl.handle.net/10220/9186 , http://dx.doi.org/10.1103/PhysRevB.86.125414
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical Review B
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The G-band Raman intensity is calculated for twisted bilayer graphene as a function of laser excitation energy based on the extended tight binding method. Here we explicitly consider the electron-photon and electron-phonon matrix elements of twisted bilayer graphene to calculate the resonance Raman intensity. The G-band Raman intensity is sensitive to the laser excitation energy and the twisting angle between the layers as a result of folding the electronic energy band structure. The Van Hove energy singularity, which is an electron transition energy between the conduction and valence bands, depends on n−m of the twisting vector (n,m). The relative intensity of the G band as a function of twisting vectors is presented, which should be useful for the experimental identification of the twisting angle.

บรรณานุกรม :
Sato, Kentaro , Saito, Riichiro , Cong, Chunxiao , Yu, Ting , Dresselhaus, Mildred S. . (2555). Zone folding effect in Raman G-band intensity of twisted bilayer graphene.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Sato, Kentaro , Saito, Riichiro , Cong, Chunxiao , Yu, Ting , Dresselhaus, Mildred S. . 2555. "Zone folding effect in Raman G-band intensity of twisted bilayer graphene".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Sato, Kentaro , Saito, Riichiro , Cong, Chunxiao , Yu, Ting , Dresselhaus, Mildred S. . "Zone folding effect in Raman G-band intensity of twisted bilayer graphene."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Sato, Kentaro , Saito, Riichiro , Cong, Chunxiao , Yu, Ting , Dresselhaus, Mildred S. . Zone folding effect in Raman G-band intensity of twisted bilayer graphene. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.