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Science & ResearchAug 20, 2026

A Unified Theoretical Framework for Photoemission and Its Inverse: Reciprocity, Spin, and Photon Polarization

We present a unified theoretical framework for spin- and angle-resolved photoemission spectroscopy (SARPES) and its inverse process (SARIPES), treating both on an equal footing.

We present a unified theoretical framework for spin- and angle-resolved photoemission spectroscopy (SARPES) and its inverse process (SARIPES), treating both on an equal footing. The formulation is based on a response tensor that encodes the reciprocity between the two processes.…

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