Quantum magnetism and quantum phase transitions

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High-energy spin waves in the spin-1 square-lattice antiferromagnet La$_2$NiO$_4$

(2023)

Authors:

AN Petsch, NS Headings, D Prabhakaran, AI Kolesnikov, CD Frost, AT Boothroyd, R Coldea, SM Hayden
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Erratum: Quantifying and Controlling Entanglement in the Quantum Magnet Cs_{2}CoCl_{4} [Phys. Rev. Lett. 127, 037201 (2021)].

Physical review letters 130:12 (2023) 129902

Authors:

Pontus Laurell, Allen Scheie, Chiron J Mukherjee, Michael M Koza, Mechtild Enderle, Zbigniew Tylczynski, Satoshi Okamoto, Radu Coldea, D Alan Tennant, Gonzalo Alvarez

Abstract:

This corrects the article DOI: 10.1103/PhysRevLett.127.037201.
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Excitations of quantum Ising chain CoNb2O6 in low transverse field: quantitative description of bound states stabilized by off-diagonal exchange and applied field: data archive

University of Oxford (2023)

Authors:

Leonie Woodland, Izabella Lovas, Mark Telling, Dharmalingam Prabhakaran, Leon Balents, Radu Coldea

Abstract:

The deposited package contains experimental single crystal inelastic neutron scattering data probing the spin dynamics in the quantum Ising chain magnet CoNb2O6 in applied transverse magnetic field together with corresponding theoretical calculations of the spin dynamics. A matlab script to read and plot all data in ASCII files is also supplied.
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Tuning the confinement potential between spinons in the Ising chain CoNb2O6 using longitudinal fields and quantitative determination of the microscopic Hamiltonian: data archive

University of Oxford (2023)

Authors:

Leonie Woodland, David Macdougal, Ivelisse M Cabrera, Jordan D Thompson, D Prabhakaran, Robert I Bewley, Radu Coldea

Abstract:

The deposited package contains experimental single crystal inelastic neutron scattering data probing the spin dynamics in the quantum Ising chain magnet CoNb2O6 in longitudinal magnetic field together with corresponding theoretical calculations of the spin dynamics. A matlab script to read and plot all data in ASCII files is also supplied.
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Negative-chirality order in S = 1/2 kagome antiferromagnet CdCu3(OH)6(NO3)2·H2O

Physical Review B American Physical Society 106:2 (2022) 24401

Authors:

Yoshihiko Ihara, Ryoga Hiyoshi, Masakazu Shimohashi, Kaoru Hayashi, Ryutaro Okuma, Fabio Orlandi, Pascal Manuel, Gøran J Nilsen, Zenji Hiroi

Abstract:

Neutron diffraction and nuclear magnetic resonance (NMR) measurements have been used to analyze the magnetic structure in the S = 1 2 kagome antiferromagnet CdCu 3 ( OH ) 6 ( NO 3 ) 2 ⋅ H 2 O . Below the magnetic ordering temperature T N ≃ 4 K , magnetic Bragg reflections at (101) and (100) were found in the neutron diffraction pattern, which suggests a q = 0 magnetic structure. Furthermore, the vector spin chirality for the q = 0 structure was successfully identified from the internal field direction obtained by the 14 N -NMR measurement, previous magnetization measurements, and magnetic symmetry analysis. Our findings point to a chirality-ordered magnetic structure with negative vector chirality and ⟨ 100 ⟩ anisotropy.
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