Fisika Materi Padat Teoritis/Komputasional

Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia

Fisika Materi Padat Teoritis dan Komputasional (TCMP)

Grup Riset

Minat penelitian kami berfokus pada pengembangan penjelasan teoritis tentang sifat transportasi, magnetik, dan optik dari sistem elektron yang berkorelasi kuat, mulai dari fisika skala mesoskala hingga skala nano.

ELEKTRON YANG SANGAT BERKORELASI

Dalam kebanyakan kasus, kami menggunakan teknik-teknik many-body berbasis tight-binding yang diimplementasikan dalam algoritma numerik yang kemudian dihitung menggunakan bahasa Fortran 90. Biasanya, karena skala masalah yang besar, perhitungan kami perlu dikelola secara paralel menggunakan MPI atau OpenMP. Pada aspek teoritis, kami telah menggunakan perkiraan Mean-Field serta Dynamical Mean-Field untuk menangani berbagai jenis interaksi dalam sistem yang sedang dipelajari. Saat ini kami juga sedang mengembangkan algoritma GW – Bethe-Salpeter Equation (BSE) berbasis tight-binding untuk mempelajari efek eksitonik. Sepanjang arah ini kami juga menggunakan paket GW-BSE berbasis Density Functional Theory (DFT) untuk perbandingan. Mahasiswa yang bekerja di kelompok kami memiliki kesempatan untuk mempelajari fisika tingkat lanjut, mengembangkan keterampilan komputasi, dan bersenang-senang melakukan proyek penelitian dengan sesama mahasiswa dan peneliti.

Pemodelan dan komputasi teoritis untuk menyelidiki fenomena terkait spin-arus dan interaksi magnetik dalam lapisan ganda magnetik berdasarkan logam transisi dan tanah jarang. Termasuk: transfer spin pada lapisan ganda feromagnet dan logam nonmagnet; Pemompaan spin: Presesi adiabatik dari magnetisasi memompa arus spin dari feromagnet ke lapisan nonmagnet; Torsi transfer spin: torsi karena kehilangan momentum sudut yang disebabkan oleh transfer arus spin; Dan fenomena terkait spin dan interaksi magnetik, seperti, Efek spin Seebeck: pembangkitan arus listrik karena arus spin yang disebabkan oleh termal; Interaksi RKKY: interaksi pertukaran yang dimediasi oleh spin elektron konduksi.

Kami berhasil menyelenggarakan Asian Network Mini-School on Quantum Materials 2024 (ANMSQM-2024)

Pertemuan ini merupakan bagian dari rangkaian acara yang diselenggarakan oleh ICTP Asian Network on Condensed Matter, Complex Systems and Statistical Physics 2023-2026

  1. High-performance Kerr quantum battery, accepted by (Appl. Phys. Lett. (2023))
  2. Electrically controllable exchange bias via interface magnetoelectric effect (IEEE Trans. Magn. (2023))
  3. Enhancement of spin-mixing conductance by s-d orbital hybridization in heavy metals (Phys. Rev. B 105211438 (2022))
  4. Effects of screened Coulomb interaction on spin transfer torque (Phys. Rev. B 103, 094420 (2021))
  5. Yukawa potential for realistic prediction of Hubbard and Hund interaction parameters for transition metals (Phys. B Condens. Matter 604, 412696 (2021))
  6. Role of hybridization and on-site correlations in generating plasmons in strongly correlated (Physical Review B 101 (20), 201102 (2020))
  7. Spin-Current Control by Induced Electric Polarization Reversal in Ni/hBN/Ni: A Cross-Correlation Material (ACS Applied Electronic Materials 2 (6), 1689-1699 (2020))
  8. Manifestation of charge/orbital order and charge transfer in temperature-dependent optical conductivity of single-layered Pr0.5Ca1.5MnO4 (J. Phys. Condens. Matter 31, 365601 (2019))
  9. Modeling and calculation of RKKY exchange coupling to explain Ti-vacancy-induced ferromagnetism in Ta-doped TiO2 (Physica B: Condensed Matter 526, 172-176 (2017))
  1. Cluster komputer (Lantai 3 Gedung UPP IPD)

Doctor Course:
1. Listiana Satiawati, Modeling and calculations within the Dynamical Mean Field Theory for the temperature-dependent magnetic and transport properties of layered manganite systems exhibiting orbital, charge, and spin orderings
(Current Position: Lecturer at Trisakti Univ., Indonesia).

2. Ihda Handayani, Synthesis and Analysis of Mg-Doped PbTe-MTe (M = Ba, Ca, Sr) Thermoelectric Material

Master Course
1. Albert Zicko Johannes, Role of electron-phonon interactions in the formation of energy gap in manganites within the Dynamical Mean Field Approximation
(graduated on July 2011. Current position: Lecturer at Department of Physics, Faculty of Science and Techonolgy, Nusa Cendana University, Kupang, INDONESIA.)

2. M. Khabib Junaeni, Effects of electron-phonon interactions on the magneto-resistance and magneto-caloric properties of manganites within the Dynamical Mean Field Approximation
(graduated on July 2012).

3. Gobi Hemerli, Effects of anisotropic exchange interactions on the tendency toward a first-order ferromagnetic transition in manganites
(graduated on July 2012).

4. Gagus Ketut Sunnardianto, Density Functional Theory study of hydrogenated graphenes
(graduated on July 2012. Master & PhD. at Osaka University. Current position: postdoc at TU Delft, the Netherlands)

5. Ahmad Subkhi Aziz Agus, A model to investigate the stability of Hund’s coupling in a magnetic ion against heating and photon irradiation
(graduated on July 2013).

6. Angga Dito Fauzi, Theoretical exploration of magnetism and transport in Fe3O4 systems with and without oxygen vacancies
(started in August 2015. PhD at National University of Singapore. Current position: Lecturer at Airlangga Univ., Indonesia)

7. Anugrah Azhar, Modeling of full Heusler alloys within tight-binding approximation
(started in August 2015. Current position: Lecturer at UIN Syarif Hidayatullah Jakarta, Indonesia)

8. Sugiyanto, Modeling of half Heusler alloys within tight-binding approximation
(dimulai pada Agustus 2015).

9. Achmad Prayogi, Algorithmic implementation of Ladder diagram approximation to study effects of electron-electron and electron-hole interactions in strongly-correlated metals and semiconductors
(started in August 2015. Current position: PhD student, National Chiao Tung University, Taiwan

10. Choirun Nisaa Rangkuti, Modeling of CE-type orbital and charge orderings in Pr1.5Ca0.5MnO4
(started in August 2016. Current position: National Institute of Aeronautics and Space (LAPAN), Indonesia)

11. Jaka Septian Kustanto, Exploring various possible magnetic exchange couplings in Dilute Magnetic Semiconductors
(dimulai pada September 2016).

13. Budi Eka Dharma, Effects of Spin-Orbit Coupling on the Electronic and Excitonic Structures of Monolayer WS2
(graduated in 2019.)

14. Desy Nicola Asturo, The Effects of Electron-Hole Interactions on Optical Spectra of Bi2Se3
(graduated in 2019.)

15. Ahmad Syahroni, Tight-Binding based GW algorithm for graphene
(graduated in 2019.)

16. Annamaria Bupu, Theoretical study on the effects of polarons on the transport properties of anatase TiO2
(graduated in 2019.)

17. Halimah Harfah, First Principles Study of Ni/hBN/Ni: Electronic Structures and Magnetic Properties
(graduated in 2019. Current Position: PhD student at Osaka University)

18. Ihda Husnayani, Radiation damage study on graphite from multiple cascade events in molecular dynamics simulation

Undergraduate course
Class of 2007:
1. Syahril Siregar, Possible formation of energy gap in graphenes doped with elements from groups III and V: a Dynamical Mean Field Theory Study
(graduated on July 2012. Master and PhD at Tohoku University, Japan. Current position: postdoc, Lund University, Sweden)

Class of 2009:
2. Seno Aji, Calculations employing 8 k.p bands for the magnetic and electronic properties of ZnO doped with transition metal elements within the Dynamical Mean Field Theory
(graduated on June 2013 Master and PhD at Tohoku University, Japan. Current position: postdoc at NIST, Japan).

3. Wileam Yonatan Phan, Theoretical study on the effects of substrates on the optical conductivity of graphene
(graduated on June 2014. MSc at the University of Tennessee. Current position: Research Software Engineer, Department of Computer Science, Rice University, USA)

4. Wisnu Tantyo Hadmojo, Calculations of electric permittivity and magnetic permeability as functions of frequency using the experimental data of scattering parameters of a radar absorbing material
(graduated on June 2013. Master and PhD at Kookmin University, South Korea. Current position: postdoc at Ulsan National Institute of Science and Technology (UNIST), South Korea)

5. Ryanda Enggar Anugrah Ardhi, Calculations employing 8 k.p bands for the magnetic and electronic properties of GaN doped with transition metal elements within the Dynamical Mean Field Theory
(graduated on June 2013. Current position: PhD at Korea Institute of Science and Technology, South Korea)

6. Ahmad Syahroni, Tight-Binding based GW algorithm for graphene
(graduated in June 2014, continue to Master Course)

Class of 2010:

7. Choirun Nisaa Rangkuti, Modeling and calculations of optical conductivity of layered Pr1.5Ca0.5MnO4 within the Dynamical Mean Field Theory
(graduated on June 2014, continue to Master Course)

8. Jaka Septian Kustanto, Calculations employing 8 k.p bands for the magnetic and transport properties of GaAs:Mn Dilute Magnetic Semiconductors within the Dynamical Mean Field Theory
(graduated on June 2014, continue to Master Course)

9. A. Ramadhan Pratama, Calculation of Remanence, Magnetization, Coercivity, and Anisotropy Constant of Barium Hexaferrite doped with Mn/Ti within Heisenberg Model
(graduated on June 2014).

10. Angga Dito Fauzi, Tight-binding based modeling to investigate spin-flipping mechanism in Fe3O4due to oxygen vacancies
(graduated on December 2014, continue to Master Course)

Class of 2011:

11. Muhammad Avicenna Naradipa, Calculation of optical conductivity of graphene employing tight-binding based GW algorithm
(graduated on June 2015. Current position: PhD student, PhD at National University of Singapore.

12. Gerry Resmi Liyana, Tight-binding based modeling to study metal-insulator transition in Vanadium Dioxide within Mott-Hubbard picture
(graduated on June 2015)

13. Bagus Hermawan Putranto, Exploration of correlation effects through optical responses of wide- and narrow-band gap semiconductors using Density Functional Theory based implementation of GW – Bethe-Salpeter equation
(graduated on June 2016. Current position: teacher at Khalifa Insan Madani Sejahtera Secondary School)

Class of 2012:

14. Yusuf Wicaksono, Dynamical Mean-Field Theoretical study to explore magnetic field dependence of Fe3O4 – reduced graphene oxide nano-particle system
(graduated on June 2016. Current position: PhD student at Osaka University Japan)

15. Annamaria Bupu, Theoretical study of the formation of magnetic moments and the ferromagnetic ordering in Ta-doped TiO2
(graduated on June 2016, continue to Master Course)

16. Regi Kusumaatmaja, Theoretical study of optical response of Fe3O4 – reduced graphene oxide nano-particle system within Dynamical Mean-Field Theory
(graduated on June 2016. Current position: PhD student, Tinbergen Institute, the Netherlands)

17. As’ad Saleh Umar, Dynamical Mean-Field Theoretical study to explore temperature-dependent magnetization of Ta-doped TiO2
(graduated on June 2016)

Class of 2013:

18. Maryam Nurhuda, Optical conductivity calculation of a Luttinger-Kohn model for GaAs incorporating electron-hole interactions through a vertex function within ladder approximation
(graduated on June 2017. Current position: PhD candidate, Nottingham Trent University, UK)

19. Humaira Khairunnisa, Optical conductivity calculation of a k.p model ZnO incorporating electron-hole interactions through a vertex function within ladder approximation
(graduated on June 2017. Current position: Master student di Daegu Gyeongbuk Institute of Science and Technology (DGIST), South Korea)

20. Altifani Rizky Hayyu, Theoretical study of band structure renormalization of Luttinger-Kohn model semiconductor by incorporating GW self-energy
(graduated on June 2017. Current position: PhD candidate, Jagiellonian University, Poland)

21. Lentara Pundi Syaina, Algorithmic implementation of Dynamical Mean-Field Theory employing stochastic exact diagonalization as the impurity solver
(graduated on June 2017. Current position: Teacher at Daarul Ilmi Islamic School Depok)

22. Habib Rizqa Karima, A toy model to investigate the emergence of excitons in the ground state of a strongly-correlated semiconductor
(graduated on June 2017.)

23. Naima Amaliah Asmah Ramadhani, Density Functional Theory (DFT) – based calculation of optical properties of AlxGa1-x-N incorporating GW self-energy and Bethe-Salpeter Equation
(graduated on June 2017.)

24. Wardatu Auliya, Density Functional Theory (DFT) – based calculation of optical properties of Ta-doped TiO2 incorporating GW self-energy and Bethe-Salpeter Equation (GW-BSE)
(graduated on June 2017.)

25. Aslamic Adika, Density Functional Theory (DFT) – based calculation of optical properties of Sr1-xNbO3-d incorporating GW self-energy and Bethe-Salpeter Equation
(graduated on June 2017.)

Class of 2014:
26. Sion Hadad Halim, Calculation of Optical Conductivity of Anderson Impurity Model for Various Model Parameters
(graduated on June 2018.)

Class of 2015:
27. Wilwin, Theoretical Study on The Generation of Unconventional Plasmons Using One-Dimensional Modified Hubbard Model with A Small Number of Sites
(graduated on June 2019.)

28. Andes Rogata P.T, Theoretical Study of Unconventional Plasmon Formation within Reduced-size 1D Hubbard Model Around Quarter Filling
(graduated on June 2019.)

29. Muhammad Gaffar, Occupancy Fluctuation Effect on Metal-Insulator Transition in 3D Hubbard Model within Dynamical Mean-Field Theory Framework
(graduated on June 2019. Current position: Master Student at Shanghai Jiao Tong University)

30. Dedi Prakasa, Theoretical Study of Unconventional Plasmons Generation in Nanoparticle Systems by Solving Finite-Size 3D Hubbard Model within Mean-Field Approximation
(graduated on June 2019.)

31. Nur Atikah T, Theoretical Study of Occupancy Fluctuation Effect on Hubbard Model at Quarter Filling within Dynamical Mean-Field Theory
(graduated on June 2019.)

Class of 2016:

32. Gian Parusa, Calculation of Reflectance Reduction within Density Functional Theory in Pump-Probe Microscopy of SrNbO3
(graduated on January 2020.)

33. Bayu Aditya, Investigation on minimal Hamiltonian for system of material with highly anisotropic transport and optical properties SrNbO3.4
(graduated on January 2020.)

34. Muhammad Hasan, Electronic Structure and Optical Properties of Bi2Se3 within DFT
(graduated on January 2020.)

35. Rasyid Sulaeman, Tight-binding model to investigate reflectance reduction in correlated metals through pump-probe process: A preliminary study
(graduated on June 2020.)

Class of 2017:

36. Faisal Kengo, Effect of Layered Dielectric Structure Variation on Light Absorption and Electric Field in Atomic Layer Material

37. Janice A. Tombeg, Theoretical Study of Electron, Spin, and Heat Transports in Magnetic Tunnel Junction

38. Muhammad Aziz Rahman, Tight-Binding Model for Graphene C-13: Investigating the Role of Electron-Phonon Coupling

39. Muhammad Fadli Rais, Calculation of Light Absorption in Semiconductors with Quadratic, Quartic, and Sextic Energy Dispersions

40. M. Ja’far Prakoso, Theoretical Study of Valley Polarization in Bismuthene using Circularly-Polarized Light

41. Rico M. Sitorus, Theoretical Modeling of Magnetic Susceptibility of Pd and Pt

42. Rudye Layton, Theoretical Study of Valley Polarization in Anitimonene using Circularly-Polarized Light