Imperial College London
Portrait Picture

Professor Lesley F Cohen

Faculty of Natural Sciences, Department of Physics

Associate Provost (Equality, Diversity and Inclusion)
 
 
 
//

Contact

 

+44 (0)20 7594 7598l.cohen Website CV

 
 
//

Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
//

Location

 

1111Blackett LaboratorySouth Kensington Campus

//

Summary

 

Publications

Publication Type
Year
to

448 results found

Kazakova O, Gallop J, Perkins G, Cohen Let al., 2007, Scanned micro-Hall microscope for detection of biofunctionalized magnetic beads, APPLIED PHYSICS LETTERS, Vol: 90, ISSN: 0003-6951

Journal article

Litvinenko KL, Nikzad L, Allam J, Murdin BN, Pidgeon CR, Harris JJ, Zhang T, Cohen LFet al., 2007, Spin lifetime in high quality InSb epitaxial layers grown on GaAs, Publisher: AMER INST PHYSICS, ISSN: 0021-8979

Conference paper

Litvinenko KL, Nikzad L, Allam J, Murdin BN, Pidgeon CR, Harris JJ, Zhang T, Cohen LFet al., 2007, Spin lifetime in high quality InSb epitaxial layers grown on GaAs - art. no. 083105, 28th International Conference on the Physics of Semiconductors (ICPS-28), Pages: 83105-83105

The spin relaxation in undoped InSb films grown on GaAs has been investigated in the temperature range from 77 to 290 K. Two distinct lifetime values have been extracted, 1 and 2.5 ps, dependent on film thickness. Comparison of this data with a multilayer transport analysis of the films suggests that the longer time (similar to 2.5 ps at 290 K) is associated with the central intrinsic region of the film, while the shorter time (similar to 1 ps) is related to the highly dislocated accumulation region at the film-substrate interface. Whereas previous work on InAs films grown on GaAs showed that the native surface defect resulted in an additional charge accumulation layer with high conductivity but very short spin lifetime, in InSb layers the surface states introduce a depletion region. We infer that InSb could be a more attractive candidate for spintronic applications than InAs. (c) 2007 American Institute of Physics.

Conference paper

Branford W, Singh LJ, Barber ZH, Kohn A, Petford-Long AK, Van Roy W, Magnus F, Morrison K, Clowes SK, Bugoslavsky YV, Cohen LFet al., 2007, Temperature insensitivity of the spin-polarization in Co2MnSi films on GaAs (001), New Journal of Physics, Vol: 9

Journal article

Wang H, Branford WR, Cohen LF, Skinner SJ, Ryan MPet al., 2007, Preparation of Ferromagnetic Cobalt Substituted TiO2 (Anatase) Thin Films by Electrochemical Deposition, Chem. Mater., Vol: 19, Pages: 3084-3086

Journal article

Zhang T, Harris JJ, Branford WR, Clowes SK, Cohen LF, Solin SAet al., 2007, Inherent magnetoresistance and surface morphology of InSb thin films, 28th International Conference on the Physics of Semiconductors (ICPS-28), Publisher: AMER INST PHYSICS, Pages: 561-+, ISSN: 0094-243X

Conference paper

Itskos G, Harbord E, Clowes SK, Clarke E, Van Dorpe P, Van Roy W, Cohen LF, Murray Ret al., 2007, Oblique Hanle measurements of InAs/GaAs quantum dot spin-light emitting diodes, 28th International Conference on the Physics of Semiconductors (ICPS-28), Publisher: AMER INST PHYSICS, Pages: 1289-+, ISSN: 0094-243X

Conference paper

Branford WR, Neal JR, Spencer CL, Gehring GA, Fox AM, Popovici N, da Silva RC, Conde O, Conde LFet al., 2007, Magneto-optical properties of co-doped TiO<sub>2</sub> thin films grown by pulsed laser deposition, 28th International Conference on the Physics of Semiconductors (ICPS-28), Publisher: AMER INST PHYSICS, Pages: 1199-+, ISSN: 0094-243X

Conference paper

Rossiny JCH, Fearn S, Kilner JA, Zhang Y, Chen L, Yang S, Evans J, Zhang T, Yates K, Cohen LFet al., 2007, Characterisation of Combinatorial Libraries of Perovskite Materials for SOFC Cathode Applications, 10th International Symposium on Solid Oxide Fuel Cells, Publisher: ELECTROCHEMICAL SOC INC, Pages: 1005-1013, ISSN: 1938-5862

Conference paper

Magnus F, Burnell G, Miyoshi Y, Yates KA, Bugoslavsky Y, Clowes SK, Josephs-Franks PW, Blamire MG, Cohen LFet al., 2007, Planar Andreev spectroscopy in InAs, 28th International Conference on the Physics of Semiconductors (ICPS-28), Publisher: AMER INST PHYSICS, Pages: 1281-+, ISSN: 0094-243X

Conference paper

Clowes SK, Branford WR, Gilbertson AM, Zhang T, Buckle L, Husmann A, Solin SA, Cohen LFet al., 2007, Improved geometric control of the high-field linear magnetoresistance by metallic bridges in InSb arrays, 28th International Conference on the Physics of Semiconductors (ICPS-28), Publisher: AMER INST PHYSICS, Pages: 1383-+, ISSN: 0094-243X

Conference paper

Magnus F, Yates KA, Morris B, Miyoshi Y, Bugoslavsky Y, Cohen LF, Burnell G, Blamire MG, Josephs-Franks PWet al., 2006, Prospects for detection of spin accumulation using submicron planar Andreev array spectroscopy, APPLIED PHYSICS LETTERS, Vol: 89, ISSN: 0003-6951

Journal article

Sousa PM, Dias SA, Silvestre AJ, Conde O, Morris B, Yates KA, Branford WR, Cohen LFet al., 2006, CVD of CrO<sub>2</sub>:: Towards a lower temperature deposition process, CHEMICAL VAPOR DEPOSITION, Vol: 12, Pages: 712-+, ISSN: 0948-1907

Journal article

Zhang T, Harris JJ, Branford WR, Clowes SK, Cohen LF, Solin SAet al., 2006, Exploration of the inherent magnetoresistance in InSb thin films, SEMICONDUCTOR SCIENCE AND TECHNOLOGY, Vol: 21, Pages: 1543-1546, ISSN: 0268-1242

Journal article

Brown E, Hao L, Gallop JC, Macfarlane JC, Josephs-Franks PW, Cohen LFet al., 2006, The effect of molecular oxygen on the thermal conductance of multi-walled nanotubes - a preliminary investigation, 20th International Winterschool/Euroconference on Electronic Properties of Novel Materials, Publisher: WILEY-V C H VERLAG GMBH, Pages: 3380-3384, ISSN: 0370-1972

Conference paper

Purnell AJ, Hao L, Gallop JC, Cohen LFet al., 2006, Characterization of superconducting thin films using a generic property of resonators, 8th Symposium on High Temperature Superconductors in High Frequency Fields, Publisher: SPRINGER, Pages: 633-636, ISSN: 1557-1939

Conference paper

Liu FM, Kollensperger PA, Green M, Cass AEG, Cohen LFet al., 2006, A note on distance dependence in surface enhanced Raman spectroscopy, CHEMICAL PHYSICS LETTERS, Vol: 430, Pages: 173-176, ISSN: 0009-2614

Journal article

Maher RC, Cohen LF, Le Ru EC, Etchegoin PGet al., 2006, On the experimental estimation of surface enhanced raman scattering (SERS) cross sections by vibrational pumping, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 110, Pages: 19469-19478, ISSN: 1520-6106

Journal article

Litvinenko KL, Murdin BN, Allam J, Pidgeon CR, Zhang T, Harris JJ, Cohen LF, Eustace DA, McComb DWet al., 2006, Spin lifetime in InAs epitaxial layers grown on GaAs, PHYSICAL REVIEW B, Vol: 74, ISSN: 1098-0121

Journal article

Roy SB, Chattopadhyay MK, Chaddah P, Moore JD, Perkins GK, Cohen LF, Gschneidner KA, Pecharsky VKet al., 2006, Evidence of a magnetic glass state in the magnetocaloric material Gd<sub>5</sub>Ge<sub>4</sub>, PHYSICAL REVIEW B, Vol: 74, ISSN: 2469-9950

Journal article

Maher RC, Etchegoin PG, Le Ru EC, Cohen LFet al., 2006, A conclusive demonstration of vibrational pumping under Surface Enhanced Raman Scattering conditions, J Chem Phys B, Vol: 110, Pages: 11757-11760, ISSN: 1520-6106

Journal article

Popovici N, Jimenez E, da Silva RC, Branford WR, Cohen LF, Conde Oet al., 2006, Optical and magnetic properties of Co-doped TiO<sub>2</sub> thin films grown by pulsed laser deposition, 21st International Conference on Amorphous and Nanocrystalline Semiconductors, Publisher: ELSEVIER SCIENCE BV, Pages: 1486-1489, ISSN: 0022-3093

Conference paper

Litvinenko KL, Murdin BN, Allam J, Pidgeon CR, Bird M, Morris K, Branford W, Clowes SK, Cohen LF, Ashley T, Buckle Let al., 2006, Spin relaxation in n-InSb/AlInSb quantum wells, NEW JOURNAL OF PHYSICS, Vol: 8, ISSN: 1367-2630

Journal article

Maher RC, Cohen LF, Gallop JC, Le Ru EC, Etchegoin PGet al., 2006, Temperature-dependent anti-Stokes/Stokes ratios under surface-enhanced Raman scattering conditions, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 110, Pages: 6797-6803, ISSN: 1520-6106

Journal article

MacManus-Driscoll JL, Sharma A, Bugoslavsky Y, Branford W, Cohen LF, Wei Met al., 2006, Reversible low-field magnetoresistance in Sr<sub>2</sub>Fe<sub>2-<i>x</i></sub>Mo<i><sub>x</sub></i>O<sub>6-δ</sub> by oxygen cycling and the role of excess Mo (<i>x</i>&gt;1) in grain-boundary regions, ADVANCED MATERIALS, Vol: 18, Pages: 900-+, ISSN: 0935-9648

Journal article

Miyoshi Y, Bugoslavsky Y, Syed MH, Robinson T, Cohen LF, Singh LJ, Barber ZH, Grigorescu CEA, Gardelis S, Giapintzakis J, Van Roy Wet al., 2006, Comparison of free surface polarization of NiMnSb and Co<sub>2</sub>MnSi, APPLIED PHYSICS LETTERS, Vol: 88, ISSN: 0003-6951

Journal article

Murdin BN, Litvinenko K, Clarke DG, Pidgeon CR, Murzyn P, Phillips PJ, Carder D, Berden G, Redlich B, van der Meer AFG, Clowes S, Harris JJ, Cohen LF, Ashley T, Buckle Let al., 2006, Spin relaxation by transient monopolar and bipolar optical orientation, PHYSICAL REVIEW LETTERS, Vol: 96, ISSN: 0031-9007

Journal article

Moore JD, Perkins GK, Bugoslavsky Y, Chattopadhyay MK, Roy SB, Chaddah P, Pecharsky VK, Gschneidner KA, Cohen LFet al., 2006, Reducing the operational magnetic field in the prototype magnetocaloric system Gd<sub>5</sub>Ge<sub>4</sub> by approaching the single cluster size limit -: art. no. 072501, APPLIED PHYSICS LETTERS, Vol: 88, ISSN: 0003-6951

Journal article

Purnell AJ, Hao L, Gallop JC, Cohen LFet al., 2006, Characterization of superconducting thin films using a generic property of resonators, JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, Vol: 19, Pages: 107-110, ISSN: 1557-1939

Journal article

Itskos G, Harbord E, Clowes SK, Clarke E, Cohen LF, Murray R, Van Dorpe P, Van Roy Wet al., 2006, Oblique Hanle measurements of InAs/GaAs quantum dot spin-light emitting diodes, APPLIED PHYSICS LETTERS, Vol: 88, ISSN: 0003-6951

Journal article

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wlsprd.imperial.ac.uk:80/respub/WEB-INF/jsp/search-html.jsp Request URI: /respub/WEB-INF/jsp/search-html.jsp Query String: id=00100594&limit=30&person=true&page=8&respub-action=search.html