TG Perring

Testing the itinerancy of spin dynamics in superconducting Bi2Sr2CaCu2O8+ (2009)

Xu, G, Gu, GD, Hücker, M, Fauqué, B, Perring, TG, Regnault, LP, ...

Much of what we know about the electronic states of high-temperature superconductors is due to photoemission and scanning tunnelling spectroscopy studies of the compound Bi2Sr2CaCu2O8+. The...

Itinerant magnetic excitations in antiferromagnetic CaFe2As2 (2009)

Diallo, SO, Antropov, VP, Perring, TG, Broholm, C, Pulikkotil, JJ, Ni, N, ...

Neutron scattering measurements of the magnetic excitations in single crystals of antiferromagnetic CaFe2As2 reveal steeply dispersive and well-defined spin waves up to an energy of ~100 meV....

Emergence of coherent magnetic excitations in the high temperature underdoped La2-xSrxCuO4 superconductor at low temperatures (2009)

Lipscombe, OJ, Vignolle, B, Perring, TG, Frost, CD, Hayden, SM

We use inelastic neutron scattering to measure the magnetic excitations in underdoped La2-xSrxCuO4 (x=0.085, Tc=22 K) for large energy (5

Effect of covalent bonding on magnetism and the missing neutron intensity in copper oxide compounds (2009)

Walters, AC, Perring, TG, Caux, J-S, Savici, AT, Gu, GD, Lee, C-C, ...

Theories involving highly energetic spin fluctuations are among the leading contenders for explaining high-temperature superconductivity in the cuprates1. These theories could be tested by inelastic...

High-energy spin excitations in BaFe2As2 observed by inelastic neutron scattering (2008)

Perring, TG, Bewley, RI, Guidi, T, Pitcher, MJ, Parker, DR, Clarke, SJ, ...

We report neutron-scattering measurements of cooperative spin excitations in antiferromagnetically ordered BaFe2As2, the parent phase of an iron pnictide superconductor. The data extend up to similar...

From cooperative paramagnetism to Neel order in Y2Ru2O7 : neutron scattering measurements (2008)

Van Duijn, J, Hur, N, Taylor, JW, Qiu, Y, Huang, QZ, Cheong, S-W, ...

Two energy scales in the spin excitations of the high-temperature superconductor La2-xSrxCuO4 (2007)

Vignolle, B, Hayden, SM, McMorrow, DF, Ronnow, HM, Lake, B, Frost, CD, ...

Spin waves throughout the Brillouin zone and magnetic exchange coupling in the ferromagnetic metallic manganites La1−xCaxMnO3 (x=0.25 and 0.30) (2007)

Ye, F, Dai, P, Fernandez-Baca, JA, Adroja, DT, Perring, TG, Tomioka, Y, ...

Persistence of high-frequency spin fluctuations in overdoped superconducting La2 xSrxCuO4 (x=0.22) (2007)

Lipscombe, OJ, Hayden, SM, Vignolle, B, McMorrow, DF, Perring, TG

Spin dynamics in the pseudogap state of a high-temperature superconductor (2007)

Hinkov, V, Bourges, P, Pailhès, S, Sidis, Y, Ivanov, A, Frost, CD, ...

The pseudogap is one of the most pervasive phenomena of high-temperature superconductors1. It is attributed either to incoherent Cooper pairing setting in above the superconducting transition...

Zener double exchange from local valence fluctuations in magnetite (2007)

McQueeney, RJ, Yethiraj, M, Chang, S, Montfrooij, W, Perring, TG, Honig, JM, ...

Magnetite (Fe3O4) is a mixed valent system where electronic conductivity occurs on the B site (octahedral) iron sublattice of the spinel structure. Below TV=123 K, a metal-insulator transition occurs...

Quantum dynamics and entanglement of spins on a square lattice (2007)

Christensen, NB, Ronnow, HM, McMorrow, DF, Harrison, A, Perring, TG, Enderle, M, ...

Mapping spin-wave dispersions in stripe-ordered La2-xSrxNiO4 (x=0.275, 0.333) (2005)

Woo, HJ, Boothroyd, AT, Nakajima, K, Perring, TG, Frost, CD, Freeman, PG, ...

Using the MAPS spectrometer at the ISIS spallation source, we have measured the magnetic excitations of single-crystal samples of stripe-ordered La2-xSrxNiO4 with x=0.333 and 0.275. The full...