R. Coldea

University of Oxford — United Kingdom

Physics and Astronomy · Physical Sciences

43h-index9.2kcitations176works1.52yr avg
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Research Topics

Advanced Condensed Matter Physics(138), Physics of Superconductivity and Magnetism(126), Magnetic and transport properties of perovskites and related materials(53), Theoretical and Computational Physics(23), Inorganic Fluorides and Related Compounds(17)

Publications176 total

From continuum excitations to sharp magnons via transverse magnetic field in the spin-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:math> Ising-like triangular lattice antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Na</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>BaCo</mml:mi><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:msub><mml:mi>PO</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mo>)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
Physical review. B./Physical review. B·2025· 4 citedOpen Access
Origin of the insulating state in the honeycomb iridate <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Cu</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>IrO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Physical review. B./Physical review. B·2025
Compass-model physics on the hyperhoneycomb lattice in the extreme spin-orbit regime
Nature Communications·2024· 4 citedOpen Access
Anisotropy of the zigzag order in the Kitaev honeycomb magnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>α</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mi>RuBr</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Physical review. B./Physical review. B·2024· 3 citedOpen Access
Origin of the insulating state in the Kitaev candidate Cu$_2$IrO$_3$
arXiv (Cornell University)·2024Open Access
Anisotropic magnetic interactions in a candidate Kitaev spin liquid close to a metal-insulator transition
Communications Physics·2024· 3 citedOpen Access
Compass-model physics on the hyperhoneycomb lattice in the extreme spin-orbit regime
arXiv (Cornell University)·2024Open Access
Selective synthesis and crystal chemistry of candidate rare earth Kitaev materials: honeycomb and hyperhoneycomb Na$_2$PrO$_3$
arXiv (Cornell University)·2024Open Access
Selective Synthesis and Crystal Chemistry of Candidate Rare-Earth Kitaev Materials: Honeycomb and Hyperhoneycomb Na<sub>2</sub>PrO<sub>3</sub>
Inorganic Chemistry·2024· 3 cited
Anisotropy of the zigzag order in the Kitaev honeycomb magnet $α$-RuBr$_3$
arXiv (Cornell University)·2024Open Access
Anisotropic magnetic interactions in a candidate Kitaev spin liquid close to a metal-insulator transition
arXiv (Cornell University)·2024Open Access
Excitations of quantum Ising chain <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>CoNb</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>O</mml:mtext><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math> in low transverse field: Quantitative description of bound states stabilized by off-diagonal exchange and applied field
Physical review. B./Physical review. B·2023· 10 citedOpen Access
Tuning the confinement potential between spinons in the Ising chain compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>CoNb</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math> using longitudinal fields and quantitative determination of the microscopic Hamiltonian
Physical review. B./Physical review. B·2023· 16 citedOpen Access
High-energy spin waves in the spin-1 square-lattice antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>La</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>NiO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>
Physical Review Research·2023· 10 citedOpen Access
Tuning the confinement potential between spinons in the Ising chain CoNb2O6 using longitudinal fields and quantitative determination of the microscopic Hamiltonian
arXiv (Cornell University)·2023Open Access
Excitations of quantum Ising chain CoNb2O6 in low transverse field: quantitative description of bound states stabilized by off-diagonal exchange and applied field
arXiv (Cornell University)·2023Open Access
High-energy spin waves in the spin-1 square-lattice antiferromagnet La$_2$NiO$_4$
arXiv (Cornell University)·2023· 1 citedOpen Access
Erratum: Quantifying and Controlling Entanglement in the Quantum Magnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Cs</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>CoCl</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math> [Phys. Rev. Lett. <b>127</b>, 037201 (2021)]
Physical Review Letters·2023· 1 citedOpen Access
Quantifying and Controlling Entanglement in the Quantum Magnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Cs</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>CoCl</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math>
Physical Review Letters·2021· 72 citedOpen Access
Studies on Novel Yb-based Candidate Triangular Quantum Antiferromagnets: Ba3YbB3O9 and Ba3YbB9O18
arXiv (Cornell University)·2021· 3 citedOpen Access
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Frequent Co-authors

D. M. Tennant(11), Z. Tylczyński(9), D. Prabhakaran(8), Sungkyun Choi(7), P. Gegenwart(6), Roger D. Johnson(6), R. A. Cowley(6), D. F. McMorrow(6), G. Aeppli(4), I. I. Mazin(4), Itamar Kimchi(4), Soham Manni(4), T. G. Perring(4), M. Kenzelmann(4), M. Enderle(4), Elisa M. Wheeler(3), E. Wawrzyńska(3), P. Smeibidl(3), P. G. Radaelli(3), S. C. Williams(3)