Matches in SemOpenAlex for { <https://semopenalex.org/work/W2004689555> ?p ?o ?g. }
- W2004689555 abstract "An extensive surface characterization of hydrofluoric acid (HF) etched and annealed SrTiO${}_{3}$ single crystals, vacuum-annealed below 300 ${}^{ensuremath{circ}}$C, reveals the formation of a two-dimensional electron gas (2DEG). A joint scanning tunneling spectroscopy and low-energy electron diffraction analysis allows us to associate the surface metallic state (characterized by the presence of a nonzero density of states close to the Fermi level) with the low-temperature-annealed highly ordered $1ifmmodetimeselsetexttimesfi{}1$ reconstructed SrTiO${}_{3}$ surface hosting two-dimensional carriers. Meanwhile, a gap opens in the tunneling spectrum of $2ifmmodetimeselsetexttimesfi{}1$ reconstructed, high-temperature-annealed surfaces. X-ray photoemission spectroscopy shows that the metallic state is associated with the surface formation of Ti${}^{3+}$. Recently published photoemission data demonstrated the formation of a 2DEG on the surface of cleaved SrTiO${}_{3}$, while scanning tunneling spectroscopy on crystals heated at high temperature revealed gaplike features: Our results can help reconcile this seemingly contradicting phenomenology observed so far by scanning tunneling spectroscopy and photoemission spectroscopy." @default.
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- W2004689555 date "2012-10-15" @default.
- W2004689555 modified "2023-09-30" @default.
- W2004689555 title "Observation of a two-dimensional electron gas at the surface of annealed SrTiO<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>3</mml:mn></mml:msub></mml:math>single crystals by scanning tunneling spectroscopy" @default.
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- W2004689555 doi "https://doi.org/10.1103/physrevb.86.155425" @default.
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