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Regensburg 2025 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 13: Poster

DS 13.39: Poster

Donnerstag, 20. März 2025, 18:00–20:00, P1

Chiral Induced Spin Selectivity Cooling — •Ohad Golan1, Yossi Paltiel1, and Ron Naaman21Hebrew University of Jerusalem, Jerusalem, Israel — 2Weizmann Institute of Science, Rehovot, Israel

Chiral Induced Spin Selectivity (CISS) is a quantum phenomenon in which electron spins become selectively polarized as they pass through chiral materials. This effect enhances spin-dependent interactions without the need for external magnetic fields, playing a crucial role in various spintronic and chemical processes. Building on this principle, the Chiral Induced Spin Selectivity Cooling (CISSCO) effect exploits CISS to generate a temperature gradient across chiral materials. When current flows through a chiral system from a source to a drain, spin alignment at the source increases local entropy, leading to heating, while spin randomization at the drain reduces entropy, resulting in cooling. Unlike conventional thermoelectric and magnetocaloric effects, CISSCO requires no magnetic materials, enabling efficient and highly localized cooling. This groundbreaking mechanism has the potential to transform nanoscale heat management, offering an innovative solution for cooling micro- and submicron electronic devices.

Keywords: Nanoscale cooling; Spintronics; Thermoelectric devices; Chiral Materials; Heat Transfer Mechanisms

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