Research

Research Interest:
Theoretical Condensed Matter Physics (Solid State Physics),
with focus on:

  • Spintronics and magnetism,
  • Spin caloritronic and magnetocaloric,
  • Spin-current-related phenomenons.

contact: adambadra [AT] gmail.com
*replace [AT] with @ mark

Affiliation:
Lecturer at Department of Physics,
Faculty of Mathematics and Natural Sciences,
Universitas Indonesia

B. Sc – M. Sc – Dr. Sc.
Theoretical Physics Group, under Prof. Gerrit E. W. Bauer, Institute for Materials Research, Tohoku University

Supervisors & Collaborators

  • G. E. W. Bauer, Tohoku University (Japan) and University of Groningen (Netherlands)
  • O. A. Tretiakov, University of New South Wales (Australia)
  • A. O. Leon, P. Catholic University of Valparaíso (Chile)
  • M. A. Majidi, Universitas Indonesia (Indonesia)
  • A. Azhar, UIN Syarif Hidayatullah (Indonesia)

 

Weekly Seminar

Weekly Seminar Department of Physics

 

Since 2012, Department of Physics, Faculty of Mathematics and Natural Science, Universitas Indonesia, regularly hosts seminars on a weekly basis. In the seminar, participants join faculty members and visitors as they present current research work.

  • Objective
    This seminar aims to promote scientific discussions between physicist across expertise as well as provide an overview of current research development of Indonesian physicists.
  • Time and place
    The seminars are organized every Wednesday during the academic years.
    Time : 13.00 – 15.00
    Place : Main Seminar Room, Department of Physics.
    *Special seminars are scheduled irregularly for visiting guest/collaborators.
  • Audience
    Audience includes faculty members, master and doctoral course students of department physics. Undergraduate students are strongly encouraged to attend the seminar too.
  • Presenters
    Invited presenters are expected to give a presentation about their research works on physics or related areas. As the presentation is intended for students and faculty members of various physics specializations, it is recommended to give an overview of the current progress of the respective areas.

 

List of Presenters

Spring 2019

Feb 6 Fatwa Ramdani (Faculty of Computer Science, Brawijaya University)
Feb 12 Special seminar by Hiroshi Kawamura & Wataru Horiuchi (Hokkaido University)
Feb 13 Julio (Physics Research Center, Indonesian Institute of Science)
Feb 20 Choirul Anam (Department of Physics, Diponegoro University)
Feb 27 Evvy Kartini (Science and Technology Center for Advanced Materials, National Nuclear Energy Agency)
Mar 6 Nur Ajrina Putri, Alka Budi Wahidin & Reyhan Dani Lambaga (Master students of Department of Physics)
Mar 13 Andy Octavian Latief (Department of Physics, Institute of technology Bandung)
Mar 20 Nurul Taufiqu Rochman (Physics Research Center, Indonesian Institute of Science)
Mar 22 Special seminar by Ryota Nagasawa (Faculty of Agriculture, Tottori University)
Mar 27 Koichi Kusakabe (Faculty of Engineering Science, Osaka University)
Apr 10 Cuk Imawan & Adhi Harmoko S. (Department of Physics, Universitas Indonesia)
Apr 11 Special seminar by Daniel Kartawiguna, Hidayat Agus Sabarudin & Nur Dwi Prasetyo (PT. Siemens Indonesia)
Apr 24 Supriyanto Ardjo Pawiro (Department of Physics, Universitas Indonesia)
May 8 Haryanto Mangaratua Siahaan (Department of Physics, Parahyangan Catholic University)
May 15 M. Aziz Majidi (Department of Physics, Universitas Indonesia)

Education

2013-2015, 2015 – 2018    Master & Doctor of Science: Department of Physics, Faculty of Science, Tohoku University
(under Interdepartmental Doctoral Degree Program for Multi-dimensional Materials Science Leaders)
2009 – 2013    Bachelor of Science: Degree Department of Physics, Faculty of Science, Tohoku University
(under of Mathematics and Physics Student Encouragement Project 2009 – 2011).
2008 – 2009    Center for Japanese Language and Culture, Osaka University
2004 – 2007    1st National Senior High School of Jember, East Java, Indonesia

Science School

2016    International Workshop & School on Spin Transfer, Nancy, France.

2014    Summer School: Charge and Spin Transport in non-metallic systems and confined geometries, Mainz, Germany.

2014    7th IEEE Magnetics Society Summer School, Rio de Janeiro, Brazil.
2012    Kinken Wakate: 9th Materials Science School for Young Scientists and Students, Sendai, Japan.
2008    2nd Asian Science Camp, Bali, Indonesia.

2007    1st Asian Science Camp, Taipei, Taiwan.
Internship

2016    Theoretical Physics research group, Quantum Nanoscience Department, Kavli Institute of Nano Science, Delft University of Technology
2014   Smart Energy Research Laboratories, Tsukuba Research Center, NEC
2010   Sydney University, Faculty of Science

 

Publication

Papers
A.O.Leon, A.B.Cahaya and G.E.W.Bauer , “Voltage control of rare-earth magnetic moments at the magnetic-insulatorーmetal interface”, Phys. Rev. Lett. 120, 027201 (2018), arXiv: 1709.01271
A.B.Cahaya, A.O.Leon and G.E.W.Bauer , “Crystal field effects on spin pumping”, Phys. Rev. B 96, 144434 (2017)arXiv: 1709.02119
A.B.Cahaya, O.A.Tretiakov and G.E.W.Bauer , “Spin Seebeck power conversion”, IEEE Trans. Magn. 51, 0800414 (2015), arXiv: 1504.02002
A.B.Cahaya, O.A.Tretiakov and G.E.W.Bauer , “Spin Seebeck power generators”, Appl. Phys. Lett. 104, 042402 (2014), arXiv: 1311.6195


Thesis
M. Sc.: abstract, slides
Dr.Sc.: abstract, slides

Awards

Scholarships
2008 – 2015    Japanese Ministry of Education and Sport (MEXT) Scholarship.
2015 – 2018    Japan Society for the Promotion of Science (JSPS) Fellowship for Young Scientists.

Awards
2008     Satyalancana Wira Karya from Presiden Indonesia
2012     Young Scientist Award from Aoba Society for the Promotion of Science 青葉理学振興会奨励賞.

Science Competition Awards
2008     Silver Medal on XXXIX International Physics Olympiad, Hanoi, Vietnam.
2008     Gold Medal on 9th Asian Physics Olympiad, Ulaanbaatar, Mongolia.
2008     Gold Medal on 4th International Zhautykov Olympiad in Physics, Almaty, Kazakhtan.
2007     Bronze Medal on 8th Asian Physics Olympiad, Shanghai, China
2006     Silver Medal Senior High School Level Indonesia National Science Olympiad in Physics, Semarang.
2006     Finalist on National Youth Scientific Research Competition.

 

Presentations

2018    International Conference on Functional Materials Science
A.B. Cahaya, A. Azhar, M. A. Majidi, “Spin Wave Dispersion of Heusler Alloys”
2018    The International Conference on Condensed Matters and Advanced Materials
A.B. Cahaya, M. A. Majidi, “Pure Spin Current Generation involving Half Metal”
2018    3rd Material Research Society Indonesia (MRS-id) Meeting
A.B. Cahaya, Keynote speaker “Spin Current Generation in 1 Dimensional Spin Chain Model of Insulating Magnetic Interface”
2018    Conference on Theoretical Physics and Nonlinear Phenomena 2018
A.B. Cahaya, M. A. Majidi, “Drop of Spin Polarization of Half Metal due to Interfacial Spin Current Generation”
2013    Japanese Society of Applied Physics: Spring Meeting
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer  “Spin Seebeck Thermoelectric Generator”

Posters
2017    Spin Conversion Research Meeting
A.O.Leon, A.B.Cahaya and G.E.W.Bauer:  “Voltage control of interface rare earth magnetic moments”
2017    Gordon Research Conference: Spin Dynamics in Nanostructures,
A.B.Cahaya , A.O.Leon and G.E.W.Bauer:  “Crystal Field Effects in Spin Pumping”
2017    Gordon Research Seminar: Spin Dynamics in Nanostructures,
A.B.Cahaya , A.O.Leon and G.E.W.Bauer:  “Crystal Field Effects in Spin Pumping”
2016    International Workshop & School on Spin Transfer 2016
A.B.Cahaya , A.O.Leon and G.E.W.Bauer:  “Dynamics of a Classical Magnetic Moment in Electron Gas”
2016    Summit of Materials Science 2016
A.B.Cahaya and G.E.W.Bauer:  “Dynamics of a Classical Magnetic Moment in Electron Gas”
2015    Joint Symposium on the Materials Science and Engineering
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer:  “Spin Seebeck Power Conversion”
2014    Joint Symposium on Materials Science and Engineering for the Next Generation
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer:  “Spin Seebeck Power Conversion”
2014    The 12th RIEC International Workshop on Spintronics
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer:  “Spin Seebeck Power Conversion”
2014    Spin Mechanics 2
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer:  “Spin Seebeck Thermoelectric Generator”
2013    Gordon Research Conference: Spin Dynamics in Nanostructures,
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer:  “Spin Seebeck Power Generator”
2013    The 3rd CSIS International Symposium on Spintronics-based VLSIs and The 11th RIEC International Workshop on Spintronics
A.B.Cahaya , O.A.Tretiakov and G.E.W.Bauer:  “Spin Seebeck Thermoelectric Generator”

Outreachs
2017    1st High School Jember, Indonesia, “Study in Japan”
2013    3rd High School Sendai Miyagi Japan, Science Cafe:”Spin Seebeck Thermoelectric”

Guest Lectures
2018    Universitas Indonesia, Indonesia, “Dynamics of a Classical Magnetic Moment in Electron Gas”
2018    Institut Teknologi Bandung, Indonesia, “Spin Caloritronics”
2017    Institut Teknologi Sepuluh Nopember, Indonesia, “Spin Caloritronics”
2017    Universitas Jember, Indonesia, “Spin Caloritronics”

 

Kompetisi

2001       Juara 2 Lomba Matematika tingkat SD se-kabupaten Jombang oleh SMPN 1 Jombang.
2003       Juara 1 Olimpiade Sains Nasional tingkat kabupaten Magetan bidang Fisika tingkat SMP.
2004       Juara 2 Lomba MIPA tingkat SMP se-karesidenan Besuki oleh SMAN 1 Jember.
2004       Juara 1 Lomba MIPA tingkat SMP se-Jawa-Bali oleh SMAK Kolese Santo Yusup, Malang.
2004       Juara 1 Lomba MIPA tingkat SMP se-karesidenan Besuki oleh SMAK Santo Paulus, Jember.
2005       50 Besar Lomba Nasional Menuju Olimpiade Sains Indonesia bidang Matematika tingkat SMA oleh Lembaga Olimpiade Sains Indonesia.
2005       Juara 1 Lomba Matematika tingkat SMA se-karesidenan Besuki oleh Fakultas Keguruan dan Ilmu Pendidikan Universitas Muhammadiyah Jember.
2005       Juara 2 Olimpiade Sains Nasional tingkat kabupaten Jember bidang Fisika tingkat SMA.
2005       Juara 3 Lomba Matematika tingkat SMA se-Jawa-Bali oleh Fakultas MIPA Universitas Airlangga, Surabaya.
2005       Peserta Peraga Karya Keberbakatan dalam kegiatan Pentas Anak Berbakat Nasional oleh Direktur Pembinaan Sekolah Luar Biasa, Direktorat Jenderal Manajemen Pendidikan Dasar dan Menengah, Departemen Pendidikan Nasional.
2005       Sertifikat High Distinction dalam Australian National Chemistry Quiz tingkat SMA.
2006       Juara 1 Lomba Teknik Fisika tingkat SMA se- Jawa oleh Departemen Teknik Fisika, Fakultas Teknologi Industri, Institut Teknologi Sepuluh Nopember Surabaya.
2006       Juara 2 Lomba Teknik Kimia tingkat SMA se-Jawa Timur oleh Departemen Teknik Kimia, Fakultas Teknologi Industri, Institut Teknologi Sepuluh Nopember Surabaya.
2006       Juara 1 Lomba Matematika tingkat SMA se-karesidenan Besuki oleh Fakultas Keguruan dan Ilmu Pendidikan Universitas Muhammadiyah Jember.
2006       Juara 1 Lomba Karya Tulis Ilmiah Matematika tingkat SMA se-Jawa Timur oleh Jurusan Matematika Fakultas MIPA Universitas Negeri Jember.
2006       Juara 1 Olimpiade Sains Nasional tingkat Kabupaten Jember bidang Fisika tingkat SMA.
2006       Finalis  Lomba Penelitian Ilmiah Remaja oleh Direktorat Jenderal Manajemen Pendidikan Dasar dan Menengah, Departemen Pendidikan Nasional.
2006       Juara 3 Olimpiade Sains Nasional tingkat Provinsi Jawa Timur bidang Fisika tingkat SMA.