Ritam Chakraborty

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cond-mat.mes-hall2026

Evidence of Haldane-Chain Physics in an Fe-Dehydroindigo Coordination Polymer

Ritam Chakraborty, T. V. Ramakrishnan

We investigate whether an Fe--dehydroindigo coordination polymer can support Haldane-chain physics in its intrinsic, substrate-free limit. Spin-orbit-coupled density-functional-the…

cond-mat.mes-hall2026

Giant Bulk-Rashba Splitting in Polar Topological Insulator BiSbTeSe $_{2}$

Ritam Chakraborty

Bulk-Rashba spin splitting is forbidden in tetradymite topological insulators like Bi $_{2}$ Se $_{3}$ or Bi $_{2}$ Te $_{3}$ , since their quintuple-layer stacking preserves inversion symmetry.…

Evidence of Haldane-Chain Physics in an Fe-Dehydroindigo Coordination Polymer

Giant Bulk-Rashba Splitting in Polar Topological Insulator BiSbTeSe2​

Giant Bulk-Rashba Splitting in Polar Topological Insulator BiSbTeSe $_{2}$