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University of Oxford: Oxford, Oxfordshire, GB

2008 to present | Professor of Physics (Physics Department)
Employment
Source: Self-asserted source
Radu Coldea

Works (49)

Magnetic Field Dependence of Excitations Near Spin-Orbital Quantum Criticality

Physical Review Letters
2017 | Journal article
DOI: 10.1103/PhysRevLett.118.067205
EID:

2-s2.0-85012262526
Contributors: Biffin, A.; RĂĽegg, C.; Embs, J.; Guidi, T.; Cheptiakov, D.; Loidl, A.; Tsurkan, V.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Topological triplon modes and bound states in a Shastry–Sutherland magnet

Nature Physics
2017 | Journal article
DOI: 10.1038/nphys4117
EID:

2-s2.0-85019024276
Contributors: McClarty, P.A.; KrĂĽger, F.; Guidi, T.; Parker, S.F.; Refson, K.; Parker, A.W.; Prabhakaran, D.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Incommensurate counterrotating magnetic order stabilized by Kitaev interactions in the layered honeycomb α-Li2IrO3

Physical Review B
2016 | Journal article
DOI: 10.1103/PhysRevB.93.195158
EID:

2-s2.0-84970983660
Contributors: Williams, S.C.; Johnson, R.D.; Freund, F.; Choi, S.; Jesche, A.; Kimchi, I.; Manni, S.; Bombardi, A.; Manuel, P.; Gegenwart, P. et al.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Single crystal growth from separated educts and its application to lithium transition-metal oxides

Scientific Reports
2016 | Journal article
DOI: 10.1038/srep35362
EID:

2-s2.0-84992020791
Contributors: Freund, F.; Williams, S.C.; Johnson, R.D.; Coldea, R.; Gegenwart, P.; Jesche, A.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Spin dynamics of counterrotating Kitaev spirals via duality

Physical Review B
2016 | Journal article
DOI: 10.1103/PhysRevB.94.201110
EID:

2-s2.0-84995513618
Contributors: Kimchi, I.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Monoclinic crystal structure of α-RuCl3 and the zigzag antiferromagnetic ground state

Physical Review B - Condensed Matter and Materials Physics
2015 | Journal article
DOI: 10.1103/PhysRevB.92.235119
EID:

2-s2.0-84950326920
Contributors: Johnson, R.D.; Williams, S.C.; Haghighirad, A.A.; Singleton, J.; Zapf, V.; Manuel, P.; Mazin, I.I.; Li, Y.; Jeschke, H.O.; ValentĂ­, R. et al.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Unified theory of spiral magnetism in the harmonic-honeycomb iridates α,β, and γ Li<inf>2</inf>IrO<inf>3</inf>

Physical Review B - Condensed Matter and Materials Physics
2015 | Journal article
DOI: 10.1103/PhysRevB.91.245134
EID:

2-s2.0-84935491765
Contributors: Kimchi, I.; Coldea, R.; Vishwanath, A.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Cascade of field-induced magnetic transitions in a frustrated antiferromagnetic metal

Physical Review B - Condensed Matter and Materials Physics
2014 | Journal article
DOI: 10.1103/PhysRevB.90.020401
EID:

2-s2.0-84903975872
Contributors: Coldea, A.I.; Seabra, L.; McCollam, A.; Carrington, A.; Malone, L.; Bangura, A.F.; Vignolles, D.; Van Rhee, P.G.; McDonald, R.D.; Sörgel, T. et al.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Effect of isoelectronic doping on the honeycomb-lattice iridate A2 IrO3

Physical Review B - Condensed Matter and Materials Physics
2014 | Journal article
DOI: 10.1103/PhysRevB.89.245113
EID:

2-s2.0-84902839205
Contributors: Manni, S.; Choi, S.; Mazin, I.I.; Coldea, R.; Altmeyer, M.; Jeschke, H.O.; ValentĂ­, R.; Gegenwart, P.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb2 O6 in a transverse field: Geometric frustration and quantum renormalization effects

Physical Review B - Condensed Matter and Materials Physics
2014 | Journal article
DOI: 10.1103/PhysRevB.90.014418
EID:

2-s2.0-84904628579
Contributors: Cabrera, I.; Thompson, J.D.; Coldea, R.; Prabhakaran, D.; Bewley, R.I.; Guidi, T.; Rodriguez-Rivera, J.A.; Stock, C.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Kitaev interactions between j = 1/2 moments in honeycomb Na <inf>2</inf>IrO<inf>3</inf> are large and ferromagnetic: Insights from ab initio quantum chemistry calculations

New Journal of Physics
2014 | Journal article
DOI: 10.1088/1367-2630/16/1/013056
EID:

2-s2.0-84894197939
Contributors: Katukuri, V.M.; Nishimoto, S.; Yushankhai, V.; Stoyanova, A.; Kandpal, H.; Choi, S.; Coldea, R.; Rousochatzakis, I.; Hozoi, L.; Brink, J.V.D.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Noncoplanar and counterrotating incommensurate magnetic order stabilized by kitaev interactions in Îł-li2iro3

Physical Review Letters
2014 | Journal article
DOI: 10.1103/PhysRevLett.113.197201
EID:

2-s2.0-84910071091
Contributors: Biffin, A.; Johnson, R.D.; Kimchi, I.; Morris, R.; Bombardi, A.; Analytis, J.G.; Vishwanath, A.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Quasiparticle breakdown in the quasi-one-dimensional Ising ferromagnet CoNb2 O6

Physical Review B - Condensed Matter and Materials Physics
2014 | Journal article
DOI: 10.1103/PhysRevB.90.174406
EID:

2-s2.0-84911059495
Contributors: Robinson, N.J.; Essler, F.H.L.; Cabrera, I.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Realization of a three-dimensional spin-anisotropic harmonic honeycomb iridate

Nature Communications
2014 | Journal article
DOI: 10.1038/ncomms5203
EID:

2-s2.0-84903642812
Contributors: Modic, K.A.; Smidt, T.E.; Kimchi, I.; Breznay, N.P.; Biffin, A.; Choi, S.; Johnson, R.D.; Coldea, R.; Watkins-Curry, P.; McCandless, G.T. et al.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Unconventional magnetic order on the hyperhoneycomb Kitaev lattice in β-Li2IrO3: Full solution via magnetic resonant x-ray diffraction

Physical Review B - Condensed Matter and Materials Physics
2014 | Journal article
DOI: 10.1103/PhysRevB.90.205116
EID:

2-s2.0-84911367501
Contributors: Biffin, A.; Johnson, R.D.; Choi, S.; Freund, F.; Manni, S.; Bombardi, A.; Manuel, P.; Gegenwart, P.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Spin waves and revised crystal structure of honeycomb iridate Na <inf>2</inf>IrO <inf>3</inf>

Physical Review Letters
2012 | Journal article
DOI: 10.1103/PhysRevLett.108.127204
EID:

2-s2.0-84859042916
Contributors: Choi, S.K.; Coldea, R.; Kolmogorov, A.N.; Lancaster, T.; Mazin, I.I.; Blundell, S.J.; Radaelli, P.G.; Singh, Y.; Gegenwart, P.; Choi, K.R. et al.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Direct observation of charge order in triangular metallic AgNiO<inf>2</inf> by single-crystal resonant x-ray scattering

Physical Review Letters
2011 | Journal article
DOI: 10.1103/PhysRevLett.106.157206
EID:

2-s2.0-79960630771
Contributors: Pascut, G.L.; Coldea, R.; Radaelli, P.G.; Bombardi, A.; Beutier, G.; Mazin, I.I.; Johannes, M.D.; Jansen, M.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Anomalous high-energy spin excitations in the high-T<inf>c</inf> superconductor-parent antiferromagnet La<inf>2</inf>CuO<inf>4</inf>

Physical Review Letters
2010 | Journal article
DOI: 10.1103/PhysRevLett.105.247001
EID:

2-s2.0-78649829264
Contributors: Headings, N.S.; Hayden, S.M.; Coldea, R.; Perring, T.G.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Quantum criticality in an ising chain: Experimental evidence for emergent e8 symmetry

Science
2010 | Journal article
DOI: 10.1126/science.1180085
EID:

2-s2.0-74249089987
Contributors: Coldea, R.; Tennant, D.A.; Wheeler, E.M.; Wawrzynska, E.; Prabhakaran, D.; Telling, M.; Habicht, K.; Smeibidl, P.; Kiefer, K.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Magnetic order and dynamics of the charge-ordered antiferromagnet La1.5 Sr0.5 CoO4

Physical Review B - Condensed Matter and Materials Physics
2009 | Journal article
DOI: 10.1103/PhysRevB.80.134414
EID:

2-s2.0-70749095112
Contributors: Helme, L.M.; Boothroyd, A.T.; Coldea, R.; Prabhakaran, D.; Frost, C.D.; Keen, D.A.; Regnault, L.P.; Freeman, P.G.; Enderle, M.; Kulda, J.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Spin dynamics of the frustrated easy-axis triangular antiferromagnet 2H -AgNiO2 explored by inelastic neutron scattering

Physical Review B - Condensed Matter and Materials Physics
2009 | Journal article
DOI: 10.1103/PhysRevB.79.104421
EID:

2-s2.0-64849117519
Contributors: Wheeler, E.M.; Coldea, R.; Wawrzyńska, E.; Sörgel, T.; Jansen, M.; Koza, M.M.; Taylor, J.; Adroguer, P.; Shannon, N.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

A study of the quantum classical crossover in the spin dynamics of the 2D S = 5/2 antiferromagnet Rb2MnF4: Neutron scattering, computer simulations and analytic theories

Journal of Statistical Mechanics: Theory and Experiment
2008 | Journal article
DOI: 10.1088/1742-5468/2008/05/P05017
EID:

2-s2.0-44949154334
Contributors: Huberman, T.; Tennant, D.A.; Cowley, R.A.; Coldea, R.; Frost, C.D.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Anomalous temperature evolution of the internal magnetic field distribution in the charge-ordered triangular antiferromagnet AgNiO2

Physical Review Letters
2008 | Journal article
DOI: 10.1103/PhysRevLett.100.017206
EID:

2-s2.0-40749101568
Contributors: Lancaster, T.; Blundell, S.J.; Baker, P.J.; Brooks, M.L.; Hayes, W.; Pratt, F.L.; Coldea, R.; Sörgel, T.; Jansen, M.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Charge disproportionation and collinear magnetic order in the frustrated triangular antiferromagnet AgNiO2

Physical Review B - Condensed Matter and Materials Physics
2008 | Journal article
DOI: 10.1103/PhysRevB.77.094439
EID:

2-s2.0-41549097344
Contributors: Wawrzyńska, E.; Coldea, R.; Wheeler, E.M.; Sörgel, T.; Jansen, M.; Ibberson, R.M.; Radaelli, P.G.; Koza, M.M.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Evidence for decay of spin waves above the pseudogap of underdoped Y Ba2 Cu3 O6.35

Physical Review B - Condensed Matter and Materials Physics
2007 | Journal article
DOI: 10.1103/PhysRevB.75.172510
EID:

2-s2.0-34347208702
Contributors: Stock, C.; Cowley, R.A.; Buyers, W.J.L.; Coldea, R.; Broholm, C.; Frost, C.D.; Birgeneau, R.J.; Liang, R.; Bonn, D.; Hardy, W.N.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Excitation spectra and ground state properties of the layered spin- 1 2 frustrated antiferromagnets Cs2 Cu Cl4 and Cs2 Cu Br4

Physical Review B - Condensed Matter and Materials Physics
2007 | Journal article
DOI: 10.1103/PhysRevB.75.174447
EID:

2-s2.0-34347247314
Contributors: Fjærestad, J.O.; Zheng, W.; Singh, R.R.P.; McKenzie, R.H.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Field induced magnetic phase transition as a magnon Bose Einstein condensation

Science and Technology of Advanced Materials
2007 | Journal article
DOI: 10.1016/j.stam.2007.06.004
EID:

2-s2.0-34548474316
Contributors: Radu, T.; Tokiwa, Y.; Coldea, R.; Gegenwart, P.; Tylczynski, Z.; Steglich, F.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Orbital degeneracy removed by charge order in triangular antiferromagnet AgNiO2

Physical Review Letters
2007 | Journal article
DOI: 10.1103/PhysRevLett.99.157204
EID:

2-s2.0-35348829741
Contributors: Wawrzyńska, E.; Coldea, R.; Wheeler, E.M.; Mazin, I.I.; Johannes, M.D.; Sörgel, T.; Jansen, M.; Ibberson, R.M.; Radaelli, P.G.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Anomalous excitation spectra of frustrated quantum antiferromagnets

Physical Review Letters
2006 | Journal article
DOI: 10.1103/PhysRevLett.96.057201
EID:

2-s2.0-33144486148
Contributors: Zheng, W.; Fjærestad, J.O.; Singh, R.R.P.; McKenzie, R.H.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Excitation spectra of the spin- 1 2 triangular-lattice Heisenberg antiferromagnet

Physical Review B - Condensed Matter and Materials Physics
2006 | Journal article
DOI: 10.1103/PhysRevB.74.224420
EID:

2-s2.0-33845672207
Contributors: Zheng, W.; Fjærestad, J.O.; Singh, R.R.P.; McKenzie, R.H.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Magnetic phase transitions in the two-dimensional frustrated quantum antiferromagnet Cs2 Cu Cl4

Physical Review B - Condensed Matter and Materials Physics
2006 | Journal article
DOI: 10.1103/PhysRevB.73.134414
EID:

2-s2.0-33645771780
Contributors: Tokiwa, Y.; Radu, T.; Coldea, R.; Wilhelm, H.; Tylczynski, Z.; Steglich, F.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Bose-Einstein condensation of magnons in Cs2CuCl4

Physical Review Letters
2005 | Journal article
DOI: 10.1103/PhysRevLett.95.127202
EID:

2-s2.0-27144527858
Contributors: Radu, T.; Wilhelm, H.; Yushankhai, V.; Kovrizhin, D.; Coldea, R.; Tylczynski, Z.; LĂĽhmann, T.; Steglich, F.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Ground states of a frustrated spin-12 antiferromagnet: Cs2CuCl4 in a magnetic field

Physical Review B - Condensed Matter and Materials Physics
2005 | Journal article
DOI: 10.1103/PhysRevB.71.214426
EID:

2-s2.0-28244489495
Contributors: Veillette, M.Y.; Chalker, J.T.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Sum rules and missing spectral weight in magnetic neutron scattering in the cuprates

Physical Review B - Condensed Matter and Materials Physics
2005 | Journal article
DOI: 10.1103/PhysRevB.72.224511
EID:

2-s2.0-29644440132
Contributors: Lorenzana, J.; Seibold, G.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Temperature dependence of the magnetic susceptibility for triangular-lattice antiferromagnets with spatially anisotropic exchange constants

Physical Review B - Condensed Matter and Materials Physics
2005 | Journal article
DOI: 10.1103/PhysRevB.71.134422
EID:

2-s2.0-28644431709
Contributors: Zheng, W.; Singh, R.R.P.; McKenzie, R.H.; Coldea, R.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Two-magnon excitations observed by neutron scattering in the two-dimensional spin-52 Heisenberg antiferromagnet Rb2MnF4

Physical Review B - Condensed Matter and Materials Physics
2005 | Journal article
DOI: 10.1103/PhysRevB.72.014413
EID:

2-s2.0-33749158915
Contributors: Huberman, T.; Coldea, R.; Cowley, R.A.; Tennant, D.A.; Leheny, R.L.; Christianson, R.J.; Frost, C.D.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Field-induced quantum phase transition in the quasi 1D XY-like antiferromagnet Cs2CoCl4

Journal of Magnetism and Magnetic Materials
2004 | Journal article
DOI: 10.1016/j.jmmm.2003.12.1115
EID:

2-s2.0-2642533854
Contributors: Mukherjee, C.J.; Coldea, R.; Tennant, D.A.; Koza, M.; Enderle, M.; Habicht, K.; Smeibidl, P.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Extended scattering continua characteristic of spin fractionalization in the two-dimensional frustrated quantum magnet Cs2CuCl4 observed by neutron scattering

Physical Review B - Condensed Matter and Materials Physics
2003 | Journal article
EID:

2-s2.0-0344440750
Contributors: Coldea, R.; Tennant, D.A.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Direct measurement of the spin Hamiltonian and observation of condensation of magnons in the 2D frustrated quantum magnet Cs<inf>2</inf>CuCl<inf>4</inf>

Physical Review Letters
2002 | Journal article
EID:

2-s2.0-0036536535
Contributors: Coldea, R.; Tennant, D.A.; Habicht, K.; Smeibidl, P.; Wolters, C.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Evolution of spin excitations in a gapped antiferromagnet from the quantum to the high-temperature limit

Physical Review B - Condensed Matter and Materials Physics
2002 | Journal article
EID:

2-s2.0-0036870802
Contributors: Kenzelmann, M.; Cowley, R.A.; Buyers, W.J.L.; Coldea, R.; Enderle, M.; McMorrow, D.F.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Field dependence of magnetic ordering in the frustrated XY magnet Cs<inf>2</inf>CoCl<inf>4</inf>

Applied Physics A: Materials Science and Processing
2002 | Journal article
DOI: 10.1007/s003390201369
EID:

2-s2.0-0037004082
Contributors: Kenzelmann, M.; Coldea, R.; Tennant, D.A.; Visser, D.; Hofmann, M.; Smeibidl, P.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Order-to-disorder transition in the XY-like quantum magnet Cs<inf>2</inf>CoCl<inf>4</inf> induced by noncommuting applied fields

Physical Review B - Condensed Matter and Materials Physics
2002 | Journal article
EID:

2-s2.0-0036538447
Contributors: Kenzelmann, M.; Hofmann, M.; Smeibidl, P.; Tylczynski, Z.; Coldea, R.; Tennant, D.A.; Visser, D.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Experimental realization of a 2D fractional quantum spin liquid

Physical Review Letters
2001 | Journal article
DOI: 10.1103/PhysRevLett.86.1335
EID:

2-s2.0-0035251902
Contributors: Coldea, R.; Tennant, D.A.; Tsvelik, A.M.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Onset of antiferromagnetism in heavy-fermion metals

Nature
2000 | Journal article
DOI: 10.1038/35030039
EID:

2-s2.0-0038221454
Contributors: Schröder, A.; Aeppli, G.; Coldea, R.; Adams, M.; Stockert, O.; Löhneysen, H.V.; Bucher, E.; Ramazashvili, R.; Coleman, P.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Critical behavior of the three-dimensional Heisenberg antiferromagnet RbMnF3

Physical Review B - Condensed Matter and Materials Physics
1998 | Journal article
EID:

2-s2.0-0000839167
Contributors: Coldea, R.; Cowley, R.A.; Perring, T.G.; McMorrow, D.F.; Roessli, B.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Critical scattering of RbMnF3 revisited

Journal of Magnetism and Magnetic Materials
1998 | Journal article
EID:

2-s2.0-0031683810
Contributors: Coldea, R.; Cowley, R.A.; Perring, T.G.; McMorrow, D.F.; Roessli, B.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

The phase diagram of a quasi-1D S = 1/2 Heisenberg antiferromagnet

Journal of Magnetism and Magnetic Materials
1998 | Journal article
EID:

2-s2.0-0031655929
Contributors: Coldea, R.; Tennant, D.A.; Cowley, R.A.; McMorrow, D.F.; Dorner, B.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Quasi-1D S = 1/2 antiferromagnet Cs<inf>2</inf>CuCl<inf>4</inf> in a magnetic field

Physical Review Letters
1997 | Journal article
EID:

2-s2.0-4244135635
Contributors: Coldea, R.; Tennant, D.A.; Cowley, R.A.; McMorrow, D.F.; Dorner, B.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier

Neutron scattering study of the magnetic structure of Cs2CuCl4

Journal of Physics Condensed Matter
1996 | Journal article
DOI: 10.1088/0953-8984/8/40/012
EID:

2-s2.0-0001481969
Contributors: Coldea, R.; Tennant, D.A.; Cowley, R.A.; McMorrow, D.F.; Dorner, B.; Tylczynski, Z.
Source: Self-asserted source
Radu Coldea via Scopus - Elsevier
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