Valley-polarized pumping current in zigzag graphene nanoribbons with different spatial symmetries<xref rid="cpb_27_12_127203fn1" ref-type="fn">*</xref> <fn id="cpb_27_12_127203fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11704190, 11874221, and 11504240) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20171030).</p> </fn>

Valley-polarized pumping current in zigzag graphene nanoribbons with different spatial symmetries* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11704190, 11874221, and 11504240) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20171030).

Yu Zhizhou^{1, †}, Xu Fuming²

(color online) Valley-polarized pumping current as a function of the pumping potential V_p with a static potential V₀ = 0.2 V and a phase difference of π/2 at E_f = −0.076 eV for different spatial symmetries. A factor of 100 and 10 is multiplied to and for illustration,respectively.