1.2k citations · 2.1k across the 11 of their papers we have counts for
11 papers
From magnetic order to quantum disorder: a SR study of the Zn-barlowite series of kagomé antiferromagnets, ZnCu(OH)FBr
K. Tustain, B. Ward-O'Brien, F. Bert +6
We report a comprehensive muon spectroscopy study of the Zn-barlowite series of kagomé antiferromagnets, ZnCu(OH)FBr, for to .…
Infrared phonons as a probe of a spin-liquid states in herbertsmithite ZnCu3(OH)6Cl2
Andrei B. Sushkov, Gregory S. Jenkins, Tian-Heng Han +2
We report on temperature dependence of the infrared reflectivity spectra of a single crystalline herbertsmithite in two polarizations --- parallel and perpendicular to the kagome p…
Evidence for a Gapped Spin-Liquid Ground State in a Kagome Heisenberg Antiferromagnet
M. Fu, T. Imai, T. -H. Han +1
The kagome Heisenberg antiferromagnet is a leading candidate in the search for a spin system with a quantum spin-liquid ground state. The nature of its ground state remains a matte…
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 …
Brownmillerite Ca2Co2O5: Synthesis, Stability, and Re-entrant Single-Crystal-to-Single-Crystal Structural Transitions
Junjie Zhang, Hong Zheng, Christos D. Malliakas +5
Ca2Co2O5 in the brownmillerite form was synthesized using a high-pressure optical-image floating zone furnace, and single crystals with dimensions up to 1.4x0.8x0.5 mm3 were obtain…
Fractionalized excitations in the spin liquid state of a kagomé lattice antiferromagnet
Tian-Heng Han, Joel S. Helton, Shaoyan Chu +4
New physics can emerge in magnetic materials where quantum fluctuations are enhanced due to reduced dimensionality and strong frustration. One long sought example is the resonating…
Spin Induced Optical Conductivity in the Spin Liquid Candidate Herbertsmithite
Daniel V. Pilon, Chun Hung Lui, Tianheng Han +5
A quantum spin liquid (QSL) is a state of matter in which magnetic spins interact strongly, but quantum fluctuations inhibit long-range magnetic order even at zero temperature. A Q…
Refining the Spin Hamiltonian in the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu(OH)Cl using Single Crystals
Tianheng Han, Shaoyan Chu, Young S. Lee
We report thermodynamic measurements of the S=1/2 kagome lattice antiferromagnet ZnCu(OH)Cl, a promising candidate system with a spin-liquid ground state. Using s…
Synthesis and Characterization of Single Crystal Samples of Spin- Kagome Lattice Antiferromagnets in the Zn-Paratacamite Family ZnCu(OH)Cl
Tianheng Han, Joel S. Helton, Shaoyan Chu +6
The Zn-paratacamite family, ZnCu(OH)Cl for 0.33, is an ideal system for studying spin-1/2 frustrated magnetism in the form of antiferromagneti…
The Herbertsmithite Hamiltonian: SR measurements on single crystals
Oren Ofer, Amit Keren, Jess H. Brewer +2
We present transverse field muon spin rotation/relaxation measurements on single crystals of the spin-1/2 kagome antiferromagnet Herbertsmithite. We find that the spins are more ea…
Interplay of thermal and quantum spin fluctuations on the kagome lattice
Dirk Wulferding, Peter Lemmens, Patric Scheib +6
We present a Raman spectroscopic investigation of the Herbertsmithite ZnCu3(OH)6Cl2, the first realization of a Heisenberg s=1/2 antiferromagnet on a perfect kagome lattice. The ma…