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Pressure-induced color change arising from transformation between intra- and inter-band transitions in LuH2±xNy.
- Source :
- SCIENCE CHINA Physics, Mechanics & Astronomy; Feb2024, Vol. 67 Issue 2, p1-6, 6p
- Publication Year :
- 2024
-
Abstract
- The pressure-induced color change in the nitrogen-doped lutetium hydride has triggered extensive discussions about the underlying physics and potential applications. Here, we study the optical response of LuH<subscript>2±x</subscript>N<subscript>y</subscript> in a broad frequency range at ambient pressure and its evolution with pressure in the visible spectral range. The broad-band optical spectra at ambient pressure reveal a Drude component associated with intra-band electronic transitions and two Lorentz components (L1 and L2) arising from inter-band electronic transitions. The application of pressure causes a spectral weight transfer from L1 to the Drude component, leading to a blue shift of the plasma edge in the reflectivity spectrum alongside a reduction of the high-frequency reflectivity. Our results suggest that the pressure-induced color change in LuH<subscript>2±x</subscript>N<subscript>y</subscript> is closely related to the transformation between intra- and inter-band electronic transitions, providing new insights into the mechanism of the pressure-induced color change in LuH<subscript>2±x</subscript>N<subscript>y</subscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16747348
- Volume :
- 67
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- SCIENCE CHINA Physics, Mechanics & Astronomy
- Publication Type :
- Academic Journal
- Accession number :
- 175278962
- Full Text :
- https://doi.org/10.1007/s11433-023-2222-3