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)

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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

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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

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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

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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.

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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”

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