Figure 2.

Dielectric constant of the Bi2Se3. (a) Real part of dielectric function ϵ1(ω) for trigonal and orthorhombic phases of Bi2Se3. (b) Imaginary part of dielectric function ϵ2(ω) for trigonal and orthorhombic phases of Bi2Se3.

Cao and Wang Nanoscale Research Letters 2013 8:526   doi:10.1186/1556-276X-8-526
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