Office Phone: (+30) 2810 394318
Lab Phone: (+30) 2810 39 1251
Fax: (+30) 2810 39 1301
Email: gnk@materials.uoc.gr
Prof. Kioseoglou George
University Faculty Member

George Kioseoglou is a Professor at the Department of Materials Science and Technology of the University of Crete and an affiliated member of IESL/FORTH. He obtained his PhD in Physics from the State University of New York at Buffalo in 1999 in the area of spectroscopic studies of electronic states in semiconductor heterostructures. After a postdoctoral position at Brookhaven National Laboratory, he joined the Naval Research Laboratory (NRL) in Washington DC where he continued his work on efficient electrical spin injection and detection in semiconductors. From 2004 to 2007 he was a National Research Council (NRC) Fellow with the materials physics branch at NRL. In 2007 he joined the Department of Materials Science and served as its Director of Graduate Studies in the period of 2010-2015. His main research interests are in the physics and applications of semiconductor nanostructures, Spintronics and Valleytronics, and in the electronic and optical properties of 2D materials. Prof. Kioseoglou has shared 3 times the NRL Alan Berman research publication award for his work on spin injection in GaAs and Si spin-LEDs. He has co-authored over 90 scientific publications in refereed journals with 4 very-highly cited papers in Spintronics, more than 6500 total citations and an h-index of 37, and more than 270 contributed conference presentations. He gave more than 40 invited talks in international conferences and written one book chapter in Handbook of Spintronics.

Education

  • 1999, Ph.D. in Physics, State University of New York at Buffalo, USA
  • 1991, M.Sc. in Physics, Aristotle University of Thessaloniki, Greece
  • 1987, B.Sc. in Physics, Aristotle University of Thessaloniki, Greece

Career

  • 2021-present, Professor, Materials Science and Technology, University of Crete
  • 2015-present Affiliated member IESL-FORTH
  • 2010-2015 Director of Graduate Studies, Department of Materials Science and Technology, University of Crete
  • 2007-2012, Researcher at Naval Research Laboratory, Washington DC, USA
  • 2007-2020 Associate Professor, Materials Science and Technology, University of Crete
  • 2004-2007 National Research Council Fellow, Naval Research Laboratory, Washington DC, USA
  • 2002-2004 Postdoctoral Associate, GeoWashington University and Naval Research Laboratory, Washington DC, USA
  • 1999-2001 Postdoctoral Associate, State University of New York at Buffalo and Brookhaven National Laboratory, Upton Ny, USA

Interests

  • 2D Materials: optical and electronic properties
  • Valley polarization and scattering mechanisms in 2D Materials
  • Semiconductor Spintronics and Valleytronics
  • Physics and applications of semiconductor nanostructures
  • Spin-LEDs: Spin injection and detection in Fe/GaAs and Fe/Si
  • Magneto-optical studies on magnetic semiconductors and ferromagnet/semiconductor heterostructures for spintronic applications

Awards/Prizes/Distinctions

  • 2007: Alan Berman Research Publication and NRL Edison Awards for the paper "Electrical Spin-Injection into Silicon from a Ferromagnetic Metal/Tunnel Barrier Contact" Nature Physics 3, 542 (2007)
  • 2004-2007: National Research Council (NRC) Fellowship
  • 2002: Alan Berman Research Publication and NRL Edison Awards for the paper "Reduction of Spin Injection Efficiency by Interface Defect Spin Scattering in ZnMnSe/AlGaAs-GaAs Spin-Polarized Light-Emitting Diodes " PRL 89, 166602 (2002)
  • 2000: Alan Berman Research Publication and NRL Edison Awards for the paper"Robust Electrical Spin Injection into a Semiconductor Heterostructure" PRB 62, 8180 (2000)
  • 1997: Outstanding Teaching Assistant Award - The American Association of Physics Teachers
Comparison between all-optical SHG and 4D STEM mapping of twist-angle in 2D WS2 bilayers
S. Psilodimitrakopoulos, A. Orekhov, L. Mouchliadis D. Jannis, G.M. Maragkakis, G. Kourmoulakis, N. Gauquelin, G. Kioseoglou, J. Verbeeck, and E. Stratakis
npj 2D Materials and Applications, Volume:5, Page:77, Year:2021, DOI:https://doi.org/10.1038/s41699-021-00258-5
Tuning the valley polarization in WS2 monolayers via control of active defect sites induced by photochemical doping
I. Demeridou, A. Papadopoulos, G. Kourmoulakis, L. Mouchliadis, E. Stratakis, and G. Kioseoglou
Appl. Phys. Lett., Volume:118, Page:123103, Year:2021, DOI:https://doi.org/10.1063/5.0037423
Probing valley population imbalance in transition metal dichalcogenides via second harmonic generation imaging
L. Mouchliadis, S. Psilodimitrakopoulos, G.M. Maragkakis, I. Demeridou, G. Kourmoulakis, A. Lemonis, G. Kioseoglou, E. Stratakis
npj 2D Materials and Applications, Volume:5, Page:1, Year:2021, DOI:https://doi.org/10.1038/s41699-020-00183-z
Real-time spatially resolved determination of twist angle in transition metal dichalcogenide heterobilayers
S. Psilodimitrakopoulos, L. Mouchliadis, G.M. Maragkakis, G. Kourmoulakis, A. Lemonis, G. Kioseoglou, E. Stratakis
Appl. Phys. Lett., Volume:8, Page:015015, Year:2020, DOI:https://doi.org/10.1063/5.0002396
Prominent room temperature valley polarization in WS2/graphene heterostructures grown by chemical vapor deposition
I. Paradisanos, K.M. McCreary, D. Adinehloo, L. Mouchliadis, J.T. Robinson, H.J. Chuang, A.T. Hanbicki, V. Perebeinos, B.T. Jonker, E. Stratakis, and G. Kioseoglou
Appl. Phys. Lett., Volume:116, Page:203102, Year:2020, DOI:https://doi.org/10.1063/5.0002396
Twist Angle mapping in layered WS2 by Polarization-Resolved Second Harmonic Generation
S. Psilodimitrakopoulos, L. Mouchliadis, I. Paradisanos, G. Kourmoulakis, A. Lemonis, G. Kioseoglou, E. Stratakis
Scientific Reports, Volume:9, Page:14285, Year:2019, DOI:https://doi.org/10.1038/s41598-019-50534-0
Spatially selective reversible charge carrier density tuning in WS2 monolayers via photochlorination
I. Demeridou, I. Paradisanos, Y. Liu, N. Pliatsikas, P. Patsalas, S. Germanis, N.T. Pelekanos, W.A. Goddard III, G. Kioseoglou, E. Stratakis
2D Materials, Volume:6, Page:015003, Year:2019, DOI:https://doi.org/10.1088/2053-1583/aae45c
Ultrahigh-resolution nonlinear optical imaging of the armchair orientation in 2D transition metal dichalcogenides
Sotiris Psilodimitrakopoulos,Leonidas Mouchliadis,Ioannis Paradisanos,Andreas Lemonis,George Kioseoglou,Emmanuel Stratakis
Light: Science & Applications, Volume:7, Page:18005, Year:2018, DOI:https://doi.org/10.1038/lsa.2018.5
Optical Polarization of excitons and trions under continuous and pulsed excitation in single layers of WSe2
A. T. Hanbicki, M. Currie, G. Kioseoglou, C. Stephen Hellberg, A. L. Friedmana and B. T. Jonkera
Nanoscale, Volume:9, Page:17422-17428, Year:2017, DOI: https://doi.org/10.1039/C7NR05019D
Enhanced valley splitting in monolayer WSe2 due to magnetic exchange field
Chuan Zhao, Tenzin Norden, Peiyao Zhang, Puqin Zhao, Yingchun Cheng, Fan Sun, James P. Parry, Payam Taheri, Jieqiong Wang, Yihang Yang, Thomas Scrace, Kaifei Kang, Sen Yang, Guo-xing Miao, Renat Sabirianov, George Kioseoglou, Wei Huang, Athos Petrou & Hao Zeng
Nature Nanotechnology , Volume:12, Page:757–762, Year:2017, DOI:https://doi.org/10.1038/nnano.2017.68
Spatial Non-Uniformity in Exfoliated WS2 Single layers
I. Paradisanos, N. Pliatsikas, P. Patsalas, C. Fotakis, E. Kymakis, G. Kioseoglou, E. Stratakis
Nanoscale, Volume:8, Page:16197, Year:2016, DOI:https://doi.org/10.1039/C6NR03597C
Optical polarization and intervalley scattering in single layers of MoS2 and MoSe2
G. Kioseoglou, A.T. Hanbicki, M. Currie, A.L. Friedman, and B.T. Jonker
Scientific Reports, Volume:6, Page:25041, Year:2016, DOI:https://doi.org/10.1038/srep25041
Anomalous temperature-dependent spin valley polarization in monolayer WS2
A.T. Hanbicki, G. Kioseoglou, M. Currie, C.S. Hellberg, K.M. McCreary, A.L. Friedman, B.T. Jonker
Scientific Reports, Volume:6, Page:18885, Year:2016, DOI:https://doi.org/10.1038/srep18885
Spin effects in MoS2 and WS2 single layers
G. Kioseoglou, M. Korkusinski, T. Scrace, A.T. Hanbicki, M. Currie, B.T. Jonker, A. Petrou, P. Hawrylak
Phys. Status Solidi RRL10, Volume:10, Page:111-119 , Year:2016, DOI:https://doi.org/10.1002/pssr.201510291
Optical control of charged exciton states in tungsten disulfide
M. Currie, A.T. Hanbicki, G. Kioseoglou, B.T. Jonker
Appl. Phys. Lett., Volume:106, Page:201907, Year:2015, DOI:https://doi.org/10.1063/1.4921472
Magnetoluminescence and Valley Polarized State of two-dimensional Electron Gas in WS2 Monolayers
T. Scrace, Y. Tsai, B. Barman, L. Schweidenback, A. Petrou, G. Kioseoglou, I. Ozfidan, M. Korkusinski, P. Hawrylak
Nature Nanotechnology , Volume:10, Page:603, Year:2015, DOI:https://doi.org/10.1038/NNANO.2015.78
Measurement of high exciton binding energy in the monolayer transition-metal dichalcogenides WS2 andWSe2
A.T. Hanbicki, M. Currie, G. Kioseoglou, A.L. Friedman, B.T. Jonker
Solid State Comm., Volume:203, Page:16, Year:2015, DOI:https://doi.org/10.1016/j.ssc.2014.11.005
Intense femtosecond photoexcitation of monolayer MoS2
I. Paradisanos, E. Kymakis, C. Fotakis, G. Kioseoglou, E. Stratakis
Appl. Phys. Lett., Volume:105, Page:041108, Year:2014, DOI:https://doi.org/10.1063/1.4891679
Valley polarization and intervalley scattering in monolayer MoS2
G. Kioseoglou, A.T. Hanbicki, M. Currie, A.L. Friedman, D. Gunlycke, B.T. Jonker
Appl. Phys. Lett., Volume:101, Page:221907, Year:2012, DOI:https://doi.org/10.1063/1.4768299
Spin LEDs
G. Kioseoglou and A. Petrou
J Low Temp Phys, Volume:169, Page:324 , Year:2012, DOI:https://doi.org/10.1007/s10909-012-0648-x
Efficient electron spin injection in MnAs-based spin-light-emitting-diodes up to room temperature
E.D. Fraser, S. Hegde, L. Schweidenback, A.H. Russ, A. Petrou, H. Luo, G. Kioseoglou
Appl. Phys. Lett., Volume:97, Page:041103, Year:2010, DOI:https://doi.org/10.1063/1.3464966
Electrical Spin Injection into Si: a comparison between Fe/Si Schottky and Fe/Al2O3 tunnel contacts
G. Kioseoglou, A.T. Hanbicki, R. Goswami, O.M.J. van’t Erve, C.H. Li, G. Spanos, P.E. Thompson, B.T. Jonker
Appl. Phys. Lett., Volume:94, Page:122106 , Year:2009, DOI:https://doi.org/10.1063/1.3099049
Intershell exchange and sequential electrically injected spin populations of InAs quantum dot shell states
G. Kioseoglou, M. Yasar, C.H. Li, M. Korkusinski, M. Diaz-Avila, A.T. Hanbicki, P. Hawrylak, A. Petrou, B.T. Jonker
Phys. Rev. Lett. , Volume:101, Page:227203 , Year:2008, DOI:https://doi.org/10.1103/PhysRevLett.101.227203
Electrical Spin Injection into Silicon
B.T. Jonker, G. Kioseoglou, A.T. Hanbicki, C.H. Li, P.E. Thompson
Nature Physics , Volume:3, Page:542 , Year:2007, DOI:https://doi.org/10.1038/nphys673
Z-contrast-Microscopy and Density-Functional-Theory Determination of Atomic Interface Structure and its Impact on Spin Transport
T.J. Zega, A.T. Hanbicki, S.C. Erwin, I. Zutic, G. Kioseoglou, C.H. Li, B.T. Jonker, R.M. Stroud
Phys. Rev. Lett. , Volume:96, Page:196101 , Year:2006, DOI:https://doi.org/10.1103/PhysRevLett.96.196101
Interface Magnetization Reversal and Anisotropy at Fe/AlGaAs (001) Interface
H.B. Zhao, D. Talbayev, G. Lupke, A.T. Hanbicki, C. H. Li, O.M.J. van ‘t Erve, G. Kioseoglou, B.T. Jonker
Phys. Rev. Lett. , Volume:95, Page:137202 , Year:2005, DOI:https://doi.org/10.1103/PhysRevLett.95.137202
Electrical Spin Injection from an n-type Ferromagnetic Semiconductor into a III-V Device Heterostructure
G. Kioseoglou, A.T. Hanbicki, J.M. Sullivan, O.M.J. van ‘t Erve, C.H. Li, S.C. Erwin, B.T. Jonker, R. Mallory, M. Yasar and A. Petrou
Nature Materials , Volume:3, Page:799 , Year:2004, DOI:https://doi.org/10.1038/nmat1239