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Prof. Dr. rer. nat. Christian Back

Photo von Prof. Dr. rer. nat. Christian Back.
Phone
+49 89 289-12401
Room
2023
E-Mail
christian.back@tum.de
Links
Homepage
Page in TUMonline
Group
Experimental Physics of Functional Spin Systems
Job Titles
  • Department Council Member: Representative of the professors
  • Professorship on Experimental Physics of Functional Spin Systems
  • Spokesperson of the Research Area Condensed Matter Physics
Additional Info
efs.office@ph.tum.de

Courses and Dates

Title and Module Assignment
ArtSWSLecturer(s)Dates
Experimental Physics 1
eLearning course current information
Assigned to modules:
VO 4 Back, C. Tue, 08:30–10:00, MI HS1
Fri, 10:00–12:00, MI HS1
Magnetism and Magnetic Materials
eLearning course
Assigned to modules:
VO 4 Back, C.
Assisstants: Chen, L.
Tue, 14:00–16:00, PH 2024
Thu, 16:00–18:00, PH 2024
Mathematical Supplement to Experimental Physics 1
eLearning course
Assigned to modules:
VO 2 Höffer von Loewenfeld, P.
Responsible/Coordination: Back, C.
Wed, 12:00–14:00, PH HS1
and singular or moved dates
Spin-Wave Computing
Assigned to modules:
HS 2 Back, C.
Assisstants: Aqeel, A.
Exercise to Magnetism and Magnetic Materials
Assigned to modules:
UE 2 Chen, L.
Responsible/Coordination: Back, C.
Open Tutorial to Experimental Physics 1
Assigned to modules:
UE 2 Höffer von Loewenfeld, P. Maier, T.
Responsible/Coordination: Back, C.
Tue, 12:00–14:00, MW 1550
Tue, 12:00–14:00, ZEI 0001
and singular or moved dates
and dates in groups
Exercise to Experimental Physics 1
current information
Assigned to modules:
UE 2 Maier, T.
Responsible/Coordination: Back, C.
dates in groups
Current Topics in Functional Spin Systems
Assigned to modules:
SE 2 Back, C.
Lecturer Consultation Hour to Mathematical Supplement to Experimental Physics 1
This course is not assigned to a module.
RE 2 Höffer von Loewenfeld, P.
Responsible/Coordination: Back, C.
FOPRA Experiment 23: Ferromagnetic Resonance (FMR) (AEP, KM, QST-EX)
Assigned to modules:
PR 1 Korniienko, A. Pietanesi, L.
Responsible/Coordination: Back, C.
Quantum Engineering Seminar
Assigned to modules:
SE 0.2 Back, C. Pfleiderer, C. Weig, E. singular or moved dates
Revision Course to Spin-Wave Computing
Assigned to modules:
RE 2
Responsible/Coordination: Back, C.
Current Topics on Surface Magnetism
Assigned to modules:
SE 2 Back, C.

Offered Bachelor’s or Master’s Theses Topics

Ferromagnetische Resonanzmessungen bis 65 GHz
In this project we would like to extend the frequency range for ferromagnetic resonance experiments in an existing set-up to 65 GHz. Test measurements will be performed on selected thin film ferromagnets.
suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back
Kontrolle der Austauschwechselwirkung durch elektrische Felder

Es ist bekannt, dass die Austauschwechselwirkung erstmals von Heisenberg vor etwa 100 Jahren vorgeschlagen wurde. Ist ein Material erst einmal präpariert, so wird im Allgemeinen davon ausgegangen, dass es nicht möglich ist, die Größe der Austauschwechselwirkung zu ändern. Dieses Projekt zielt darauf ab, ein externes elektrisches Feld zur Kontrolle der Austauschwechselwirkung in ferromagnetischen Metallen zu nutzen. Zur Untersuchung der Steuerung durch ein elektrisches Feld verwenden wir ultradünnes Fe, das durch Molekularstrahlepitaxie auf einem Pt(111)-Substrat aufgewachsen ist. Ein Feldeffekttransistor wird mit Hilfe von Elektronenstrahllithographie hergestellt, und Magneto-Transport, magnetisch-optische und ferromagnetische Resonanztechniken werden zur Charakterisierung verwendet.

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It is known that the exchange interaction was first proposed by Heisenberg about 100 years ago. Once a material is prepared, it is generally assumed that it is not possible to change the magnitude of the exchange interaction. This project aims to use an external electric-field to control the exchange interaction in ferromagnetic metals. Here, to study the electric-field control, we use ultrathin Fe grown on Pt(111) substrate by molecular-beam epitaxy. A field-effect transistor device will be fabricated by electron-beam lithography, and magneto-transport, magnetic-optical and ferromagnetic resonance techniques will be used in this study.

suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back
Kontrolle der Spin-Orbit-Torques in ultradünnen Fe/Pt Bi-Lagen durch elektrische Felder
Spin-Orbit-Torques (SOTs) which can be used to manipulate the magnetization of thin ferromagnetic layers can be generated at interfaces to heavy metals such as Platinum. In this thesis we will attempt to modify the strength and direction of SOTs in thin bi-layers of Pt and Fe.
suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back
Untersuchung des "Flachbandmagnetismus" in dem magnetischen Weyl-Halbmetall CoSnS
A recent scanning tunneling microscopy experiment (Nature Physics 15, 443 (2019))shows the existence of an orbital magnetic moment in the magnetic Weyl semimetal CoSnS. Such orbital magnetism originates from the kinetically frustrated Kagome flat band in this (and other) material and is purely a quantum mechanical effect. We expect that this orbital magnetic moment can be detected by the electron spin resonance technique, and the experimental results will be compared with theoretical calculations.
suitable as
  • Bachelor’s Thesis Physics
Supervisor: Christian Back
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