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Temperature-dependent measurements along the K′–Γ–K direction ( h ν = 70 eV, LH polarization) from within a single domain. The dispersions measured at 70 K ( d ) and 21 K ( g ) show a marked change in the band splittings, which are also evident in temperature-dependent MDCs at the Fermi level extracted along the dashed lines shown in d and g across the α 1 and α 2 bands near K′ ( e ) and K ( f ).

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