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25 papers · 2 filters
Electronic and structural ground state of heavy alkali metals at high pressure
G. Fabbris, J. Lim, L. S. I. Veiga +2
Alkali metals display unexpected properties at high pressure, including emergence of low symmetry crystal structures, that appear to occur due to enhanced electronic correlations a…
Barlowite: A Spin-1/2 Antiferromagnet with a Geometrically Perfect Kagome Motif
Tian-Heng Han, John Singleton, John A. Schlueter
We present thermodynamic studies of a new spin-1/2 antiferromagnet containing undistorted kagome lattices---barlowite Cu(OH)FBr. Magnetic susceptibility gives …
Condensation of collective charge ordering in Chromium
A. Singer, M. Marsh, S. Dietze +9
Here we report on the dynamics of the structural order parameter in a chromium film using synchrotron radiation in response to photo-induced ultra-fast excitations. Following trans…
Wave vector dependent electron-phonon coupling drives charge-density-wave formation in TbTe3
M. Maschek, S. Rosenkranz, R. Heid +4
We present a high energy-resolution inelastic x-ray scattering investigation of the soft phonon mode in the charge-density-wave system TbTe. We analyze our data based on lattic…
Symmetry of re-entrant tetragonal phase in Ba1-xNaxFe2As2: Magnetic versus orbital ordering mechanism
D. D. Khalyavin, S. W. Lovesey, P. Manuel +5
Magneto-structural phase transitions in Ba1-xAxFe2As2 (A = K, Na) materials are discussed for both magnetically and orbitally driven mechanisms, using a symmetry analysis formulate…
ESR studies on the spin-liquid candidate -(BEDT-TTF)Cu(CN): anomalous response below K
K. G. Padmalekha, M. Blankenhorn, T. Ivek +3
The organic conductor -(BEDT-TTF)Cu(CN) seems to form a quantum spin liquid, although at low temperatures unusual properties are seen in the charge, spin and latti…