Dr. Afif SIDDIK˙I - Fizik Bölümü

Dr. Afif SIDDIK˙I
˙Iletisim bilgileri Fizik Bölümü, Phone: +90 (252) 211 15 29
Fen-Edebiyat Fakültesi, Fax: +90 (252) 223 86 56
Mu˜gla Üniversitesi,
48170 Mu˜gla, Türkiye
E-mail: siddiki@mu.edu.tr, afifsiddiki@gmail.com
Kis¸isel
Detaylar
Aras¸trma
alanlari
Dogum Tarihi: 15.05.1973
Dogum Yeri: Ankara, Türkiye
Tabiyeti: Türkiye Cumhuriyeti
Cinsiyeti: Erkek
Medeni Hali: Evli
˙Iki boyutlu yük sistemlerinde do˜grusal olmayan elektronik perdeleme ve yük ta¸sınımı, Çift
tabaka sistemlerinin Thomas-Fermi-Poisson perdeleme teorisi, Kuavantum noktalarda etkile¸sim,
Kuvantize Hall etkisinin (KHE) kırılımı, Spin-yo˜gunluk fonksiyonal teorisi, KHE tabanlıgiri¸sim
deneylerinin açıklanması, çok parçacıklısistemlerin parallel kodlarının geli¸stirilmesi.
Ö˜grenim Julius-Maximilians-Universität, Würzburg, Almanya
(Ara¸stırma yeri Max-Planck-Institut für Festkörperforschung, Stuttgart, Almanya)
Burslar ve
Ödüller
Doktora, Fizik, Haziran 2005
• Konu baslı˜gı: “Model calculations of current and density distributions in dissipative Hall
bars”
• Tez yoneticisi: Prof. Rolf R. Gerhardts
Bilkent Universitesi, Ankara, Türkiye
Yüksek lisans, Fizik, Eylül 1999
• Konu baslı˜gı: “Low Temperature Thermodynamics of Finite and Discrete Quartic Quantum
Oscillator in One Dimension ”
• Tez yoneticisi: Doc. Dr. Tu˜grul Hakio˜glu
˙Istanbul Teknik Üniversitesi, ˙ Istanbul, Türkiye
Lisans, Fizik Muhendisligi, A˜gustos 1997
• Bitirme tezi: “Canonical Transformation of Hubbard Hamiltonian to t-J Model”
• Danı¸sman: Prof. Enver P. Nahkmedov
• Alman ara¸stırma cemiyetinden (Deutsche Forschungsgemeinschaft) ara¸stırma bursu, 2001-
2005
• Bilkent Üniversitesinden ara¸stırma bursu, 1999-2000
• Bilkent Üniversitesinden ö˜grenim bursu, 1997-1999
Projeler • TÜBiTAK-TBAG ara¸stırma projesi 109T083, 2009-2011
Akademik
deneyim
Ö˜gr. üyesi ”Yo˜gun madde Fizi˜gi-I”, Mu˜gla Üniversitesi Fizik bölümü, Yüsek lisans Dersi,
Mu˜gla, Türkiye. (2009, Bahar Dönemi)
Ö˜gr. üyesi ”Yo˜gun madde Fizi˜gi-II”, Mu˜gla Üniversitesi Fizik bölümü, Doktora Dersi, Mu˜gla,
Türkiye. (2009, Bahar Dönemi)

Dokrora üstü calisma, Physics department, LS von Delft, LMU, Münih, Almanya. (Ocak
2006 - )
Dokrora üstü calisma, MPI für Festkörperforschung, Stuttgart, Almanya. (Temmuz 2005-
Aralık 2005)
Okutman ”Applications of coherent transport to two-dimensional electron gas”, Condensed
matter physics Autumn workshop 2006, International center for theoretical and applied physics,
Mu˜gla, Türkiye. (11-16 Eylül 2006)
Okutman ”Self-consistent models at coherent transport”, Condensed matter physics Autumn
workshop 2006, Feza Gürsey Institute, ˙ Istanbul, Türkiye. (4-10 Eylül 2006)
Okutman ”Screening theory of quantum dots and Hall bars ”, Condensed matter physics
spring workshop 2006, International center for theoretical and applied physics, Mu˜gla, Türkiye.
(24-31 Mart 2006)
Lecturer ”Introduction to quantum Hall effect”, Condensed matter physics workshop 2005,
Mu˜gla Üniversitesi, Mu˜gla, Türkiye. (8-13 A˜gustos 2005)
Co-lecturer (Together with Prof. R. R. Gerhardts), ”Transport in Low-Dimensional Systems”,
Fizik bölümü, Bilkent Üniversitesi, Ankara, Türkiye. (21 Mart 2005- 15 Nisan 2005)
Ara¸stırma Görevlisi, Fizik bölümü, Ortado˜gu Teknik Üniversitesi, Ankara, Türkiye. (Mart
2000-A˜gustos 2001)
• PHYS 101-102 Fundamentals of Physics
• PHYS 111-112 General Physics Lab.
• PHYS 431-432 Quantum Mechanics I-II
Ara¸stırma Görevlisi, Fizik bölümü, Bilkent Üniversitesi, Ankara, Türkiye. (Eyül 1997-S¸ubat
2000)
Yayinlar Uluslararası hakemli dergiler
• 2009
• A. Siddiki, ”Current-directioninduced rectification effect on (integer) quantized Hall plateaus”.
EuroPhys. Lett. (EPL), 87, 17008 (2009)
• J. J. Mares, A. Siddiki, D. Kindl, P. Hubik, and J. Kristofik,”Electrostatic screening and
experimental evidence of a topological phase transition in a bulk quantum Hall liquid”. New
Journal of Physics, 11, 083028 (2009)
• K.-J. Friedland, A. Siddiki, R. Hey, H. Kostial, A. Riedel, and D. K. Maude. ”Quantum
Hall effect in a high-mobility two-dimensional electron gas on the surface of a cylinder”.
Phys. Rev. B, 79, 125320 (2009)
• 2008
• S. Arslan, E. Cicek, D. Eksi, S. Aktas, A. Weichselbaum, and A. Siddiki ” Modeling of
quantum point contacts in high magnetic fields and with current bias outside the linear
response regime”Phys. Rev. B, 78, 125423 (2008)
• A. Siddiki. ”The spin-split incompressible edge states within: empirical, Hartree and density
functional theory (DFT) approximations at intermediately large Hall samples”. Physica E,
40, 1124-1126 (2008)
• P. M. Krishna, A. Siddiki, K. Guven and T. Hakioglu. ”Local current distribution at large

quantum dots (QDs): a self-consistent screening model”. Physica E, 40, 1142-1144 (2008)
• A. Siddiki, A. E. Kavruk, T. Ozturk, U. Atav and T. Hakioglu. ”The self-consistent calculation
of the edge states at quantum Hall effect (QHE) based Mach-Zehnder interferometers
(MZI)”. Physica E, 40, 1398-1400 (2008)
• J. Horas, A. Siddiki, J. Moser, W. Wegscheider and S. Ludwig. ”Investigations on unconventional
aspects in the QH regime of narrow gate defined channels”. Physica E, 40, 1130-1132
(2008)
• K. Guven, A. Siddiki, P. M. Krishna and T. Hakioglu. ”A microscopic Coulomb interaction
model as a origin of Drag effect phenomenon”. Physica E, 40, 1169-1171 (2008)
• A. Siddiki, E. Cicek, D. Eksi, A. I. Mese, S. Aktas and T. Hakioglu. ”Where are the
edge-states near the quantum point contacts ? A self-consistent approach”. Physica E, 40,
1160-1162 (2008)
• A. Siddiki, D. Eksi, E. Cicek, A. I. Mese, S. Aktas and T. Hakioglu. ”Theoretical investigation
of the electron velocity in quantum Hall bars, in the out of linear response regime”.
Physica E, 40, 1217-1219 (2008)
• 2007
• A. Siddiki ”Self-consistent Coulomb picture of an electron-electron bilayer system”. Phys.
Rev. B, 75, 155311 (2007)
• A. Siddiki and F. Marquardt. ”Self-consistent calculation of the electron distribution near
a Quantum-Point Contact in the integer Quantum Hall Effect”. Phys. Rev. B, 75, 045325
(2007)
• A. Sıddıki and R. R. Gerhardts. ”Range-Dependent Disorder Effects On The Plateau-
Widths Calculated Within The Screening Theory Of The IQHE”. International Journal of
Modern Physics B 21, 1362 (2007)
• D. Eksi, E. Cicek, and A. I. Mese, S. Aktas, A. Siddiki and T. Hakioglu”Theoretical investigation
of the effect of sample properties on the electron velocity in quantum Hall bars”.
Phys. Rev. B, 76, 075334 (2007)
• 2003-2006
• A. Sıddıki and R. R. Gerhardts. ”Thomas-Fermi-Poisson theory of screening for laterally
confined and unconfined two-dimensional electron systems in strong magnetic fields”. Phys.
Rev. B, 68, 125315 (2003)
• A. Sıddıki and R. R. Gerhardts. ”The interrelation between Incompressible strips and
Quantized Hall Plateaus”. International Journal of Modern Physics B 18, 3541 (2004)
• A. Sıddıki and R. R. Gerhardts. ”Incompressible strips in dissipative Hall bars as origin of
quantized Hall Plateaus”. Phys.Rev. B, 70, 195335 (2004)
• A. Sıddıki, S. Kraus and R. R. Gerhardts. ”Screening model of magneto-transport hysteresis
observed in bilayer quantum Hall systems”. Physica E 34, 136. (2006)
Uluslararası konferanslarda sunulan bildiriler
• A. Sıddıki and R. R. Gerhardts. ”Nonlinear Thomas-Fermi-Poisson theory of screening for
a Hall bar under strong magnetic fields”. Proceedings of the 15 th International conference
on High magnetic fields in Semiconductor physics, Oxford, England, August 2002. (edited
by: A. R. Long and J. H. Davies), ISBN:0-7503-0924-5, Institute of Physics Publishing,
Bristol (UK).
• A. Siddiki”Distribution of an Ohmic current in the close vicinity of a quantum point contact”J.
Phys.: Conf. Ser. 99 0120202008
Preprint asamasinda olan yayinlar
• A. Siddiki, J. Horas, J. Moser, W. Wegscheider and S. Ludwig ”Interaction mediated asymmetries
of the quantized Hall effect”. arXiv:0905.0204v1

Organize edilen
toplantılar
ve
Çalıs¸taylar
Konferanslar,
Davetli
konusmalar
ve
Çalıs¸taylar
• A. Siddiki ”Current direction induced rectification effect on (integer) quantized Hall plateaus”.
arXiv:0805.2312v2
• I. Akyaka Nano-elektronik sempozyumu Mu˜gla Üniversitesi, Akyaka Mu˜gla, Türkiye. 13-21
Aralık 2008.
• II. Akyaka Nano-elektronik sempozyumu Mu˜gla Üniversitesi, Akyaka Mu˜gla, Türkiye. 6-19
Subat 2009.
• III. Nano-elektronik sempozyumu Feza Gürsey Enstitüsü, Kandilli Istanbul, Türkiye. 22-27
Nisan 2009.
Davetli konusmalar
• Thomas-Fermi-Poisson theory of screening for different Hall bar geometries under strong
magnetic fields. Bilkent University, Physics Department, General Seminars. Ankara, Türkiye.
Mart 2003.
• Incompressible strips as origin of quantized Hall plateaus. Bilkent University, Physics Department,
General Seminars. Ankara, Türkiye. Kasım 2003.
• Quantized Hall plateaus resulting from incompressible strips. Walter-Schottky Institut,
Experimental Semiconductor Physics I, General Seminars. Munich, Almanya. Nısan 2004.
• The role of screening for the formation of quantized Hall plateaus. Izmir High-technology
Institute, General seminars. Izmir, Türkiye. Haziran 2004.
• Screening theory of IQHE without localization. Physikalisch-Technische Bundesanstalt
(PTB), Abt. Elektrizitaet, Group Seminars. Braunschweig, Almanya. S¸ubat 2005.
• Non-linear screening in dissipative Hall bars. Sabanci University, Physics Department, General
Seminars. Istanbul, Türkiye. Mart 2005.
• Screening theory of IQHE without localization. Middle East Technical University, Physics
Department, General Seminars. Ankara, Türkiye. Nisan 2005.
• The influence of long-range potential fluctuations on the formation of incompressible strips
and quantized Hall plateaus. Izmir High-technology Institute, General seminars. Izmir,
Türkiye. A˜gustos 2005.
• The influence of long-range potential fluctuations on the formation of incompressible strips
and quantized Hall plateaus. Mersin University, General seminars. Mersin, Türkiye.
2005.
Eylül
• The role of electron interactions on theory of IQHE without localization. Ludwig-Maximillians-
University, Physics Department, LS Kothauss, General Seminars. Munich, Almanya.
2006.
Ocak
• The Edge-Bulk theory of IQHE. Mugla Üniversitesi, General seminars. Mu˜gla, Türkiye.
Mart 2006.
• The Edge-Bulk theory of IQHE. Akdeniz Üniversitesi, General seminars. Antalya, Türkiye.
Nisan 2006.
• From Edge state picture of IQHE to Mach-Zehnder interferometer via QPC. Monte Verita,
Strongly correlated low dimensional systems. Ascona, Switzerland. Temmuz 2006.
• From Edge state picture of IQHE to Mach-Zehnder interferometer via QPC. University of
Regensburg, Group seminars. Regensburg, Germany. November 2006.
• The interaction theory of IQHE. Regensburg German physical society (DPG) meeting .
Regensburg, Almanya. Mart 2007.
• The interaction theory of IQHE. Ben Gurion University German Israeli Project (DIP) meeting
. Beer Sheva, Israil. Mayıs 2007.
• The unconventional aspects of the QHE von Klitzing’s group meeting.Max-Planck society,
Ringberg castle, Münih, Almanya. Eylül 2007.
• Ohmic transport through 1D quantum constructions in the IQHE regime ”Time dependent
phenomena in quantum mechanics”.H. Fabri institute, Blaubeuren, Almanya. Eylül 2007.
• Ohmic transport through 1D quantum constructions in the IQHE regime
ing.Berlin Teknik universitesi, Berlin, Almanya. S¸ubat 2007.
DPG meet

• ”The unconventional aspects of the QHE”. Hannover University, Physics Department.Hannover,
Almanya. Mart 2008.
• ”The unconventional aspects of the QHE”. Oldenburg University, Physics Department.Oldenburg,
Almanya. Nisan 2008.
• ”The unconventional aspects of the QHE”. Paul Drude Institute, Semiconductor Physics
Department.Berlin, Almanya. Mayis 2008.
• ”The unconventional aspects of the QHE”. Çek ulusal akademisi, Semiconductor Physics
Department.Prag, Çek cumhuriyeti. Mayis 2008.
• ”The unconventional aspects of the QHE”. Istanbul Teknik Üniversitesi, NanoTr4 Konferansi.Istanbul,
Türkiye. Mayis 2008.
• Current direction induced rectification effect:Theory and Experiments. Max-Planck-Institut
für Festkörperforschung, Abt. von Klitzing, General seminars, Stuttgart, A˜gustos 2008.
• Kuantize Hall etkisi:Teori ve deneyler. Trakya Üniversitesi, Fizik bölümü, Bölüm semineri,
Edirne, A˜gustos 2008.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. Mu˜gla Üniversitesi, Fizik bölümü,
Güz seminerleri, Mu˜gla, Ekim 2008.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. Akdeniz Üniversitesi, Fizik bölümü,
Bölüm semineri, Antalya, Kasım 2008.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. Ortado gu Teknik Üniversitesi, Fizik
bölümü, Bölüm semineri, Ankara, Kasım 2008.
• Current direction induced rectification effect:Theory and Experiments. Bilkent Üniversitesi,
Fizik bölümü, Bölüm semineri, Ankara, Kasım 2008.
• Landauer-Büttiker formalizimin yetersizli˜gi. Bilkent Üniversitesi, Yo˜gun madde konferansi,
Ankara, Kasım 2008.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. Anadolu Üniversitesi, Fizik bölümü,
Bölüm semineri, Eskisehir, Kasım 2008.
• Landauer-Büttiker formalizimin yetersizli˜gi. Anadolu Üniversitesi, Fizik bölümü, Bölüm
semineri, Eskisehir, Kasım 2008.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. Dokuz Eylül Üniversitesi, Fizik
bölümü, Bölüm semineri, Izmir, Kasım 2008.
• Landauer-Büttiker formalizimin yetersizli˜gi. Dokuz Eylül Üniversitesi, Fizik bölümü, Bölüm
semineri, Izmir, Kasım 2008.
• Landauer-Büttiker formalizimin yetersizli˜gi. Feza Gürsey Enstitüsü, Fizik bölümü, Bölüm
semineri, Istanbul, Aralık 2008.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. Mersin Üniversitesi, Fizik bölümü,
10. Ulusal fizik günleri, Mersin, Mayıs 2009.
• Nanoteknoloji ve Kuantum bilgi ça˜gında fizikçi olmak. 5. Ulusal Parcacik hizlandiricilari
ve dedektorleri yaz okulu, Bodrum-Mu˜gla, A˜gustos s 2009.
Konusmalar
• Canonical Transformation of Hubbard Hamiltonian to t-J Model (Tez sunumu). Istanbul
Teknik Üniversitesi fizik bölümü, Istanbul, A˜gustos 1997.
• Discrete and Finite Bosonic States. Istanbul Teknik Üniversitesi, fizik bölümü, Istanbul,
Ocak 1999.
• Low Temperature Thermodynamics of Finite and Discrete Quartic Quantum Oscillator in
One Dimension (Master tezi sunumu). Bilkent University, Physics Department, Ankara,
Eylül 1999.
• Possibility of Bose Condensation in One-dimension. Middle East Technical University,
Physics Department, General Seminars, Ankara, Mayıs 2000.
• Nonlinear Thomas-Fermi-Poisson theory of screening for a Hall bar under strong magnetic
fields. Max-Planck-Institut für Festkörperforschung, Abt. von Klitzing, Group Seminars,
Stuttgart, Nisan 2002.
• Self-Consistent screening theory at different Hall bar geometries under strong magnetic
fields. Max-Planck-Institut für Festkörperforschung, Abt. von Klitzing, Group Seminars,

Akademik
beceriler
Süd-Tirol, Ekim 2002.
• Incompressible strips as origin of quantized Hall plateaus. Max-Planck-Institut
für Festkörperforschung, Abt. von Klitzing, Group Seminars, Ringberg Castle, Munich,
Ekim 2003.
• Screening in electron-electron bilayer systems. Max-Planck-Institut für
Festkörperforschung, Abt. von Klitzing, General seminars, Stuttgart, S¸ubat 2004.
• Quantized Hall plateaus resulting from incompressible strips. Max-Planck-Institut für
Festkörperforschung, Abt. von Klitzing, Group Seminar, Stuttgart, Nisan 2004.
• Screening theory of IQHE without localization: Theory and Predicitions. Max-Planck-
Institut für Festkörperforschung, Abt. von Klitzing, Group Seminars, Freudenstadt, Ekim
2004.
• Screening properties of electron-electron bilayer systems: Measurement and Calculation.
Max-Planck-Institut für Festkörperforschung, Abt. von Klitzing, Group seminars, Freudenstadt,
Ekim 2004.
• Model calculations of current and density distributions in dissipative Hall bars (Doktora
tezi sunumu). Julius-Maximilians-Universität , Department of physics and astronomy,
Würzburg, Haziran 2005.
Poster Sunumları
• Nonlinear Thomas-Fermi-Poisson theory of screening for a Hall bar under strong magnetic
fields. SemiMag-15, Institute of Physics, Oxford, Ingiltere, A˜gustos 2002.
• Thomas-Fermi-Poisson theory of nonlinear screening in a 2DEG under strong magnetic
fields. QHE: Past, Present and Future, Abt. von Klitzing, MPI-FKF, Stuttgart, Almanya,
Temmuz 2003.
• The interrelation between Incompressible strips and Quantized Hall plateaus. SemiMag-16,
National High Magnetic Field Laboratory, Tallahassee, Florida, A.B.D, A˜gustos 2004.
• The influence of long-range fluctuations on the formation of incompressible strips and quantized
Hall plateaus. EPQHS, CalTech. of Pasadena , Taos, New Mexico, A.B.D, Temmuz
2005.
• Screening based model of observed hysteresis in bilayer systems. EP2DS-16, Sandia National
Laboratories, Albuquerque, New Mexico, A.B.D, Temmuz 2005.
• Electron distribution near a QPC in the QHE regime. Quantum information processing,
SFB meeting Hersching, Munih, Almanya Mayıs 2006.
• Electron and current density distribution near a QPC. Strongly correlated low dimensional
systems, Monte Verita, Ascona, Isvicre Temmuz 2006.
Yaz/Kı¸s okulları
• Summerschool, Quantum Field Theory, Temmuz 1996, Bilkent University, Ankara, Türkiye.
• 12 th Winterschool, New Developments in Solid State Physics, Low-dimensional Systems,
S¸ubat 2002, Mauterndorf, Austurya.
• Summerschool, Theoretical and Computational Materials Science, Haziran, 2003, Max-
Planck-Institute, Stuttgart, Almanya.
• 13 th Winterschool, New Developments in Solid State Physics, Low-dimensional Systems,
S¸ubat 2004, Mauterndorf, Austurya.
• Programlama dilleri: FORTRAN 77, FORTRAN 90, FORTRAN 95, basic programming in
C
• Uygulamalar: Parallel computation using MPI, high performance parallel computing, OPENMP,
Maple, Mathematica, L ATEX, common Windows database, spreadsheet, and presentation
software
• ˙ I¸sletim sistemleri: Unix/Linux, Windows.
• Temiz oda deneyimi, Dr. S. Lok danı¸smanlı˜gında, MPI-Stuttgart
• Cryogenic laboratuar deneyimi, Oxford Instruments sivi Helyum sıcaklı˜gında yük ta¸sınımı.

Üyelikler • German Physical Society (DPG).
• Associate member of Center for Nano science (CeNS), Munich/Germany.
• Member of Arnold Sommerfeld center for theoretical physics (ASC), Munich/Germany.
• Member of Institute of theoretical and applied physics (ITAP) Marmaris/Turkey.
Yürütulen Tez
calıs¸maları
• (2007) J. Horas, M.Sc., Ludwigs-Maximillians University Munich, Physics Dept. LS Kotthaus
(Dr. Stefan Ludwig ile birlikte). Title: ”Investigations on unconventional aspects in the QH
regime of narrow gate defined channels”.
• (2007) D. Eksi, M.Sc., Trakya University Physics dept. ( Yard. Doc. S. Aktas ile birlikte).
Title: ”Theoretical investigation of the electron velocity in quantum Hall bars”.
• (2008) S. Arslan, M.Sc., Technical University of Munich, Dept. of scientific computation. Title:
”Realistic modelling of quantum point contact under strong magnetic fields”.
• E. Cicek, Ph.D., Trakya University Physics dept. (Doc. Dr. M. Ulas ile birlikte). Title: ”Selfconsistent
calculation of the electron distribution at 2DES in the integer quantum Hall effect
regime”, Devam ediyor
• S. E. Gulebaglan, Ph.D., Dokuz Eylül University Physics dept. (Prof. I. Sokmen ile birlikte).
Title: ”Local density of states in a two dimensional electron gas”, Devam ediyor
• G. Bilgec, Ph.D., Dokuz Eylül University Physics dept. (Prof. I. Sokmen ile birlikte). Title:
”Exchange and correlation effects in a two dimensional electron gas”, Devam ediyor
• A. Salman, Ph.D., Akdeniz University Physics dept. (Y. Doc. M. B. Yucel ile birlikte). Title:
”The local screening theory of the fractional Hall effect”, Devam ediyor
• N. Boz, Ph.D., Dokuz Eylül University Physics dept. (Prof. I. Sokmen ile birlikte). Title:
”Electrical and thermal breakdown of the IQHE: a microscopic model”, Devam ediyor