Topologically ordered zigzag nanoribbon: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>e</mml:mi><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> fractional edge charge, spin-charge separation, and ground-state degeneracy
Physical review research