Snehasish Sen

collaborators

3 papers

cond-mat.str-el2026

Trimerized Spin- $1/2$ Chain: Emergent Low-Energy Hamiltonian, Higher-Energy Excitations, and Magnetic and Thermodynamic Responses

Snehasish Sen, Sudhansu S. Mandal

We investigate a spin-1/2 antiferromagnetic chain with trimerized exchange couplings relevant to Na $_{2}$ Cu $_{3}$ Ge $_{4}$ O $_{12}$ . We show that the low-energy Hilbert space maps onto an…

cond-mat.str-el2026

Fermionic Band Dispersions and an Evidence of Cooperon Excitations in a Spin- $1/2$ Trimer Chain

P. Srikanth Patnaik, Snehasish Sen, A. K. Bera +3

We obtain the solution of the Hamiltonian of an antiferromagnetically coupled spin- $1/2$ trimer chain in terms of three bands that host three different species of fermions. While t…

cond-mat.mes-hall2024

Theory of Polar Skyrmions in Layered Structure of Ferroelectric Perovskites

Snehasish Sen, Sudhansu S. Mandal

Discovery of polar skyrmions on the (PbTiO $_{3}$ ) $_{n}$ /(SrTiO $_{3}$ ) $_{n}$ superlattice in the absence of any known interaction, which can orient electric polarizations at a point with re…

Trimerized Spin-1/2 Chain: Emergent Low-Energy Hamiltonian, Higher-Energy Excitations, and Magnetic and Thermodynamic Responses

Fermionic Band Dispersions and an Evidence of Cooperon Excitations in a Spin-1/2 Trimer Chain

Theory of Polar Skyrmions in Layered Structure of Ferroelectric Perovskites

Trimerized Spin- $1/2$ Chain: Emergent Low-Energy Hamiltonian, Higher-Energy Excitations, and Magnetic and Thermodynamic Responses

Fermionic Band Dispersions and an Evidence of Cooperon Excitations in a Spin- $1/2$ Trimer Chain