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35 papers · 1 filter
Microscopic Magnetism of A(TiO)Cu4(PO4)4 (A = Ba, Pb, Sr): 31P and 63,65Cu NMR Study
Riho Rästa, Ivo Heinmaa, Joosep Link +5
We report a comprehensive NMR study of the chiral square-cupola antiferromagnet Pb(TiO)Cu(PO) and compare its microscopic hyperfine and local-field parameters with the…
Quantum spin dynamics of the honeycomb magnet KCoTeO in high magnetic fields
Patrick Pilch, Laur Peedu, Urmas Nagel +6
We present terahertz spectroscopic measurements of quantum spin dynamics in the honeycomb magnet KCoTeO as a function of temperature, polarization and in an external ma…
Low-energy spin excitations in field-induced phases of the spin-ladder antiferromagnet BiCuPO
Patrick Pilch, Kirill Amelin, Gary Schmiedinghoff +13
We report on terahertz spectroscopic measurements of quantum spin dynamics on single crystals of a spin-1/2 frustrated spin-ladder antiferromagnet BiCuPO as a function of t…
Spin-Mediated Direct Photon Scattering by Plasmons in BiTeI
A. C. Lee, S. Sarkar, K. Du +6
We use polarization resolved Raman spectroscopy to demonstrate that for a 3D giant Rashba system the bulk plasmon collective mode can directly couple to the Raman response even in…
Symmetry breaking and ascending in the magnetic kagome metal FeGe
Shangfei Wu, Mason Klemm, Jay Shah +12
Spontaneous symmetry breaking-the phenomenon where an infinitesimal perturbation can cause the system to break the underlying symmetry-is a cornerstone concept in the understanding…
Field and Polarization Dependent Quantum Spin Dynamics in Honeycomb Magnet NaCoTeO: Magnetic Excitations and Continuum
Patrick Pilch, Laur Peedu, Anup Kumar Bera +4
We report terahertz spectroscopic measurements of quantum spin dynamics in the spin-1/2 honeycomb magnet NaCoTeO as a function of applied magnetic field with different…