Chirality and Organization of Adsorbates Modify Surface Phonon Dynamics
Meital Ozeri·Yossi Paltiel·Shira Yochelis·Ronnie Kosloff·Oded Millo·Jonas Fransson·Eugenia Pyurbeeva
ABSTRACT We report on heat capacity measurements on thin gold films deposited on Si before and after chemisorption of chiral and achiral molecular monolayers, performed by applying Joule heating and time‐resolved thermometry. Our results reveal modifications in heat capacity with a distinct dependence on molecular chirality and organizational structure: Ordered homochiral monolayers increase the Debye temperature, while disordered monolayers, whether chiral or achiral, significantly decrease it.