Prefer a chat interface with context about you and your work?
Spin Polarization of Gapped Dirac Surface States Near the Topological Phase Transition in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>TlBi</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:msub><mml:mi mathvariant="bold">S</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mtext mathvariant="normal">−</mml:mtext><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Se</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mn>2</mml:mn…
We performed systematic spin- and angle-resolved photoemission spectroscopy of TlBi(S(1-x)Se(x))(2) which undergoes a topological phase transition at x ~ 0.5. In TlBiSe(2) (x = 1.0), we revealed a helical spin texture of Dirac-cone surface states with an intrinsic in-plane spin polarization of ~0.8. The spin polarization still survives in the …