Spin-Incoherent Transport in Quantum Wires (2008)
Hew, W. K., Thomas, K. J., Pepper, M., Farrer, I., Anderson, D., Jones, G. A. C., ...
When a quantum wire is weakly confined, a conductance plateau appears at e^2/h with decreasing carrier density in zero magnetic field accompanied by a gradual suppression of the 2e^2/h plateau....
Colossal Positive Magnetoresistance in a Doped Nearly Magnetic Semiconductor (2008)
Hu, Rongwei, Thomas, K. J., Lee, Y., Vogt, T., Choi, E. S., Mitrovic, V. F., ...
We report on a positive colossal magnetoresistance (MR) induced by metallization of FeSb$_{2}$, a nearly magnetic or "Kondo" semiconductor with 3d ions. We discuss contribution of orbital MR and...
Orbital Domain Dynamics in a Doped Manganite (2007)
Turner, J. J., Thomas, K. J., Hill, J. P., Pfeifer, M., Chesnel, K., Tomioka, Y., ...
The coupling of multiple degrees of freedom - charge, spin, and lattice - in manganites has mostly been considered at the microscopic level. However, on larger length scales, these correlations may...
Direct observation of oxygen superstructures in manganites (2007)
Grenier, S., Thomas, K. J., Hill, J. P., Staub, U., Bodenthin, Y., García-Fernández, M., ...
We report the observation of superstructures associated with the oxygen 2p-states in two prototypical manganites using x-ray diffraction at the oxygen K-edge. We determine the nature of the orderings...
Hyperfine effects in quantum wires (2005)
Sawkey, D. L., Thomas, K. J., Pepper, M., Tripathi, V., Khmelnitskii, D. E., Graham, A. C., ...
This paper has been removed.
Grenier, S., Hill, J. P., Kiryukhin, V., Ku, W., Thomas, K. J., ...
We report the observation of temperature dependent electronic excitations in various manganites utilizing resonant inelastic x-ray scattering (RIXS) at the Mn K-edge. Excitations were observed...
Fano factor reduction on the 0.7 structure in a ballistic one-dimensional wire (2004)
Roche, P., Ségala, J., Glattli, D. C., Nicholls, J. T., Pepper, M., Graham, A. C., ...
We have measured the non-equilibrium current noise in a ballisticone-dimensional wire which exhibits an additional conductanceplateau at $0.7\times2e^2/h$. The Fano factor shows a clearreduction on...
Fano factor reduction on the 0.7 structure in a ballistic one-dimensional wire (2004)
Roche, P., Ségala, J., Glattli, D. C., Nicholls, J. T., Pepper, M., Graham, A. C., ...
We have measured the non-equilibrium current noise in a ballisticone-dimensional wire which exhibits an additional conductanceplateau at $0.7\times2e^2/h$. The Fano factor shows a clearreduction on...
Fano factor reduction on the 0.7 structure in a ballistic one-dimensional wire (2004)
Roche, P., Ségala, J., Glattli, D. C., Nicholls, J. T., Pepper, M., Graham, A. C., ...
We have measured the non-equilibrium current noise in a ballisticone-dimensional wire which exhibits an additional conductanceplateau at $0.7\times2e^2/h$. The Fano factor shows a clearreduction on...
Fano factor reduction on the 0.7 structure in a ballistic one-dimensional wire (2004)
Roche, P., Ségala, J., Glattli, D. C., Nicholls, J. T., Pepper, M., Graham, A. C., ...
We have measured the non-equilibrium current noise in a ballisticone-dimensional wire which exhibits an additional conductanceplateau at $0.7\times2e^2/h$. The Fano factor shows a clearreduction on...
Fano factor reduction on the 0.7 structure in a ballistic one-dimensional wire (2004)
Roche, P., Segala, J., Glattli, D. C., Nicholls, J. T., Pepper, M., Graham, A. C., ...
We have measured the non-equilibrium current noise in a ballisticone-dimensional wire which exhibits an additional conductanceplateau at $0.7\times2e^2/h$. The Fano factor shows a clearreduction on...
Nurses’ views of using computerized decision support software in NHS Direct (2004)
O’Cathain, A., Sampson, F.C., Munro, J.F., Thomas, K.J., Nicholl, J.P.
Background. Nurses working in NHS Direct, the 24-hour telephone advice line in England, use computerized decision support software to recommend to callers the most appropriate service to contact, or...
Nurses’ views of using computerized decision support software in NHS Direct (2004)
O’Cathain, A., Sampson, F.C., Munro, J.F., Thomas, K.J., Nicholl, J.P.
Background. Nurses working in NHS Direct, the 24-hour telephone advice line in England, use computerized decision support software to recommend to callers the most appropriate service to contact, or...
Nurses’ views of using computerized decision support software in NHS Direct (2004)
O’Cathain, A., Sampson, F.C., Munro, J.F., Thomas, K.J., Nicholl, J.P.
Background. Nurses working in NHS Direct, the 24-hour telephone advice line in England, use computerized decision support software to recommend to callers the most appropriate service to contact, or...
Thomas, K J, Hill, J P, Grenier, S, Kim, Y J, Abbamonte, P, Venema, L, ...
Thomas, K. J., Hill, J. P., Kim, Y-J., Grenier, S., Abbamonte, P., Venema, L., ...
We have utilized the resonant x-ray diffraction technique at the Mn L-edge in order to directly compare magnetic and orbital correlations in the Mn sub-lattice of Pr0.6Ca0.4MnO3. The resonant line...
Interaction Effects at Crossings of Spin-Polarised One-Dimensional Subbands (2003)
Graham, A. C., Thomas, K. J., Pepper, M., Cooper, N. R., Simmons, M. Y., Ritchie, D. A.
We report conductance measurements of ballistic one-dimensional (1D) wires defined in GaAs/AlGaAs heterostructures in an in-plane magnetic field, B. When the Zeeman energy is equal to the 1D subband...
Resonant x-ray diffraction study of the magnetoresistant perovskite Pr0.6Ca0.4MnO3 (2003)
Grenier, S., Hill, J. P., Gibbs, Doon, Thomas, K. J., Zimmermann, M. V., Nelson, C. S., ...
We report a x-ray resonant diffraction study of the perovskite Pr0.6Ca0.4MnO3. At the Mn K-edge, this technique is sensitive to details of the electronic structure of the Mn atoms. We discuss the...
Effects of accidental microconstriction on the quantized conductance in long wires (2002)
Starikov, A. A., Yakimenko, I. I., Graham, A. C., Thomas, K. J., Pepper, M., ...
We have investigated the conductance of long quantum wires formed in GaAs/AlGaAs heterostructures. Using realistic fluctuation potentials from donor layers we have simulated numerically the...
Enhancement of long-range magnetic order by magnetic field in superconducting La2CuO(4+y) (2001)
Khaykovich, B., Lee, Y. S., Erwin, R., Wakimoto, S., Thomas, K. J., ...
We report a detailed study, using neutron scattering, transport and magnetization measurements, of the interplay between superconducting (SC) and spin density wave (SDW) order in La2CuO(4+y). Both...
Magnetic properties of the S=1/2 quasi-one-dimensional antiferromagnet CaCu2O3 (2000)
Kiryukhin, V., Kim, Y. J., Thomas, K. J., Chow, F. C., Erwin, R. W., Huang, Q., ...
We report single crystal growth and magnetic susceptibility and neutron diffraction studies of the S=1/2 quasi-1D antiferromagnet CaCu2O3. The structure of this material is similar to that of the...
Interaction Effects in Low-Density Quantum Wires (2000)
K. J. Thomas, J. T. Nicholls, W. R. Tribe, M. Y. Simmons, D. A. Ritchie
other in a controllable fashion.[2] The midline gate has a stronger eect on the electron density in the 1D channel than a backgate, with the additional advantage that the 2D regions that constitute...
Spin Properties of Low Density One-Dimensional Wires (2000)
Thomas, K. J., Nicholls, J. T., Pepper, M., Tribe, W. R., Simmons, M. Y., Ritchie, D. A.
We report conductance measurements of a ballistic one-dimensional (1D) wire defined in the lower two-dimensional electron gas of a GaAs/AlGaAs double quantum well. At low temperatures there is an...
Controlled Wavefunction Mixing in a Strongly Coupled One-Dimensional Wire (1999)
Thomas, K. J., Nicholls, J. T., Simmons, M. Y., Tribe, W. R., Davies, A. G., Pepper, M.
We investigate the transport properties of two strongly coupled ballistic one-dimensional (1D) wires, defined by a split-gate structure deposited on a GaAs/AlGaAs double quantum well. Matching the...
Interaction Effects in a One-Dimensional Constriction (1998)
Thomas, K. J., Nicholls, J. T., Appleyard, N. J., Pepper, M., Simmons, M. Y., Mace, D. R., ...
We have investigated the transport properties of one-dimensional (1D) constrictions defined by split-gates in high quality GaAs/AlGaAs heterostructures. In addition to the usual quantized conductance...
Possible Spin Polarization in a One-Dimensional Electron Gas (1996)
Thomas, K. J., Nicholls, J. T., Simmons, M. Y., Pepper, M., Mace, D. R., Ritchie, D. A.
In zero magnetic field, conductance measurements of clean one-dimensional (1D) constrictions defined in GaAs/AlGaAs heterostructures show twenty-six quantized ballistic plateaux, as well as a...
Access to complementary medicine via general practice.
Thomas, K J, Nicholl, J P, Fall, M
BACKGROUND: The popularity of complementary medicine continues to be asserted by the professional associations and umbrella organisations of these therapies. Within conventional medicine there are...
Case against targeting long term non-attenders in general practice for a health check.
Thomas, K J, Nicholl, J P, Fall, M, Lowy, A, Williams, B T
A study was undertaken to describe the consequences of implementing that part of the 1990 contract for general practitioners which requires them to offer health checks to all patients aged 16-74...
Differences in durations of stay for surgery in the NHS and private sector in England and Wales.
Williams, B T, Nicholl, J P, Thomas, K J, Knowelden, J
Median durations of stay in England and Wales for eight "marker" operations were consistently shorter for patients in pay beds in the National Health Service than for patients in independent acute...
Ratcliffe, J, Thomas, K J, MacPherson, H, Brazier, J
Objective To evaluate the cost effectiveness of acupuncture in the management of persistent non-specific low back pain.
Thomas, K J, MacPherson, H, Thorpe, L, Brazier, J, Fitter, M, Campbell, M J, ...
Objective To determine whether a short course of traditional acupuncture improves longer term outcomes for patients with persistent non-specific low back pain in primary care.
Use of non-orthodox and conventional health care in Great Britain.
Thomas, K J, Carr, J, Westlake, L, Williams, B T
OBJECTIVE--To describe the characteristics of patients using non-orthodox health care and their pattern of use of conventional health care with respect to a particular problem. DESIGN--Postal survey...
Access to complementary medicine via general practice.
Thomas, K J, Nicholl, J P, Fall, M
BACKGROUND: The popularity of complementary medicine continues to be asserted by the professional associations and umbrella organisations of these therapies. Within conventional medicine there are...
Case against targeting long term non-attenders in general practice for a health check.
Thomas, K J, Nicholl, J P, Fall, M, Lowy, A, Williams, B T
A study was undertaken to describe the consequences of implementing that part of the 1990 contract for general practitioners which requires them to offer health checks to all patients aged 16-74...
Differences in durations of stay for surgery in the NHS and private sector in England and Wales.
Williams, B T, Nicholl, J P, Thomas, K J, Knowelden, J
Median durations of stay in England and Wales for eight "marker" operations were consistently shorter for patients in pay beds in the National Health Service than for patients in independent acute...
Ratcliffe, J, Thomas, K J, MacPherson, H, Brazier, J
Objective To evaluate the cost effectiveness of acupuncture in the management of persistent non-specific low back pain.
Thomas, K J, MacPherson, H, Thorpe, L, Brazier, J, Fitter, M, Campbell, M J, ...
Objective To determine whether a short course of traditional acupuncture improves longer term outcomes for patients with persistent non-specific low back pain in primary care.
Use of non-orthodox and conventional health care in Great Britain.
Thomas, K J, Carr, J, Westlake, L, Williams, B T
OBJECTIVE--To describe the characteristics of patients using non-orthodox health care and their pattern of use of conventional health care with respect to a particular problem. DESIGN--Postal survey...
Validating the SF-36 health survey questionnaire: new outcome measure for primary care.
Brazier, J. E., Harper, R., Jones, N. M., O'Cathain, A., Thomas, K. J., Usherwood, T., ...
OBJECTIVES--To test the acceptability, validity, and reliability of the short form 36 health survey questionnaire (SF-36) and to compare it with the Nottingham health profile. DESIGN--Postal survey...