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   tuidentifier => protected'E9521DE150D26044' (16 chars)
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   lastname => protected'Back' (4 chars)
   firstname => protected'Christian' (9 chars)
   middlename => protected'' (0 chars)
   fullname => protected'' (0 chars)
   title => protected'Prof. Dr. rer. nat.' (19 chars)
   description => protected'<p>Welcome to the research pages of the Chair of Experimental Physics of Fun
      ctional Spin-Systems, led by Prof. Dr. Christian H. Back. Our research focus
      es on fundamental magnetic properties and magnetisation dynamics in hybrid m
      aterials comprising ultrathin magnetic layers. We combine high-resolution ma
      gnetic microscopy techniques with microwave excitation and detection to expl
      ore magnetisation dynamics, the propagation of spin waves, and the efficienc
      
      
      bedded in both the <i>Center for Quantum Engineering (ZQE)</i> and the <i>Mu
      nich Center for Quantum Science and Technology (MCQST)</i>.</p>' (747 chars)
   descriptionresearch => protected'<p>Our research covers a broad range of topics in modern magnetism and spint
      ronics. A central theme is the study of spin waves and magnonics: we use tim
      
      
      ef="t3://page?uid=current#sdfootnote1sym"><sup>1</sup></a> – and develop n
      ovel readout schemes based on nitrogen-vacancy centres in diamond<a class="s
      dfootnoteanc" href="t3://page?uid=current#sdfootnote2sym"><sup>2</sup></a>. 
      We furthermore investigate complex spin structures in topological materials,
       studying magnetic skyrmions in B20 silicides and Cu<sub>2</sub>OSeO<sub>3</
      sub> as model systems for topologically non-trivial spin textures<a class="s
      dfootnoteanc" href="t3://page?uid=current#sdfootnote3sym"><sup>3</sup></a>, 
      as well as hybrid structures that combine three-dimensional topological insu
      lators with ultrathin magnetic layers for efficient spin-to-charge conversio
      n<a class="sdfootnoteanc" href="t3://page?uid=current#sdfootnote4sym"><sup>4
      </sup></a>.</p>
<p>In the field of spinorbitronics, we explore spin-orbit t
      orque driven switching on sub-nanosecond timescales<a class="sdfootnoteanc" 
      href="t3://page?uid=current#sdfootnote5sym"><sup>5</sup></a>. A highlight of
       our recent work, published in <i>Nature</i> in 2024, was the demonstration 
      that an in-plane charge current in Pt can modify the magnetic energy landsca
      pe of an adjacent Fe layer – a direct signature of magnetism control by th
      e flow of angular momentum<a class="sdfootnoteanc" href="t3://page?uid=curre
      nt#sdfootnote6sym"><sup>6</sup></a>. Magnetisation dynamics on picosecond ti
      mescales, including subtle effects like emerging anisotropic Gilbert damping
       and interfacial tuning of damping parameters<a class="sdfootnoteanc" href="
      t3://page?uid=current#sdfootnote7sym"><sup>7</sup></a>, remain at the core o
      f our experimental programme.</p>' (1933 chars)
   shortdescription => protected'Chair of Experimental Physics of Functional Spin-Systems' (56 chars)
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      title => protected'TUPHEFS Lehrstuhl für Experimentalphysik funktionaler Spinsysteme' (66 chars)
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   lastname => protected'Pfleiderer' (10 chars)
   firstname => protected'Christian' (9 chars)
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   title => protected'Prof. Dr.' (9 chars)
   description => protected'<div class="ce-bodytext"><p>Welcome to the research pages of the Chair of To
      pology of Correlated Systems (E51), led by Prof. Dr. Christian Pfleiderer. O
      ur research is centred on topological and strongly correlated phenomena in q
      uantum materials – from the discovery of magnetic skyrmions and topologica
      l band structures to quantum phase transitions and non-Fermi liquid behaviou
      r. We grow ultrapure single crystals of our own design and characterise them
       with transport,<br />thermodynamic, and spectroscopic techniques under extr
      eme conditions of temperature, pressure, and magnetic field. Our chair is ho
      sted in the Center for Quantum Engineering (ZQE), of which Prof. Pfleiderer 
      serves as exec-<br />utive director, and is part of the Munich Center for Qu
      antum Science and Technology (MCQST).</p></div>' (807 chars)
   descriptionresearch => protected'<p>A second major thrust concerns the topology of electronic band structures
       in quantum materials. We have demonstrated symmetry-enforced topological no
      dal planes at the Fermi surface of MnSi [4] and mapped net-<br />works of no
      dal planes, multifold degeneracies, and Weyl points in the chiral topologica
      l semimetal CoSi [5, 6]. In CoSi we further discovered a new generic phenome
      non: quantum oscillations of the quasiparticle lifetime per-<br />sisting to
       unusually high temperatures above 50 K [7] – revealing a fundamentally ne
      w mechanism for quantum oscillations in metals.1 We also investigate quantum
       phase transitions and non-Fermi liquid behaviour. Our early work revealed p
      artial order in the non-Fermi-liquid phase of MnSi under pressure [8], a lan
      dmark result in quantum criticality. We have since discovered the emergence 
      of mesoscale quantum phase transitions<br />in a ferromagnet [9] and study m
      aterials hosting unconventional superconductivity and competing forms of ele
      ctronic order. Advanced spectroscopic methods – including resonant elastic
       X-ray scattering (REXS) [10] and neutron scattering – provide complementa
      ry access to magnetic and electronic order across all of these research dire
      ctions.</p>' (1227 chars)
   shortdescription => protected'Chair of Topology of Correlated Systems' (39 chars)
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   tuemail => protected'christian.pfleiderer@tum.de' (27 chars)
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   lastname => protected'Weig' (4 chars)
   firstname => protected'Eva' (3 chars)
   middlename => protected'' (0 chars)
   fullname => protected'' (0 chars)
   title => protected'Prof. Dr. rer. nat.' (19 chars)
   description => protected'<p>Welcome to the research pages of the Chair of Nano and Quantum Sensors, l
      ed by Prof. Dr. Eva Maria Weig. Our research focuses on the experimental inv
      estigation of nanomechanical systems – freely suspended, top-down fabricat
      ed nanostructures that vibrate like miniature guitar strings. These nanostri
      ngs, typically 30–50 micrometres long and less than 100 nanometres wide, c
      ontain roughly one billion atoms and operate at the boundary between classic
      al and quantum mechanics. Our chair is part of the Center for Quantum Engine
      ering<br />(ZQE), of which Prof. Weig is a founding director, and the Munich
       Center for Quantum Science and Technology (MCQST).</p>' (663 chars)
   descriptionresearch => protected'<p>Our research spans the full breadth of nanomechanics, from materials deve
      lopment to quantum-enabled sensing. A central pillar is the fabrication and 
      characterisation of high-Q nanomechanical string resonators: By engineering 
      the material composition we push intrinsic mechanical quality factors to ext
      reme values – most recently up to 150,000 at room temperature using monoli
      thic 4H-SiC resonators1. By incorporating intrinsic tensile stress, the qual
      ity factor is further enhanced via dissipation dilution. Our portfolio of cr
      ystalline<br />resonator materials includes InGaP nanostrings, GaAs nanopill
      ars, and various SiC platforms, each offering distinct advantages such as pi
      ezoelectricity, dissipation dilution from high intrinsic stress, or compatib
      ility with atomic defects. This is complemented by the mature platform of st
      oichiometric amorphous SiN, which, to date, still provides the highest intri
      nsic quality factors among all tensile pre-stressed materials.</p>
<p>We co
      uple these nanomechanical oscillators to both optical and microwave cavities
      . In the optical domain, our cavity nano-optomechanics work2 enables ultrase
      nsitive displacement detection, and we have recently observed radiation pres
      sure backaction on hexagonal boron nitride (hBN) resonators at telecom wavel
      engths3. On the electrical side, we have pioneered a universal dielectric tr
      ansduction scheme4 and demonstrated microwave cavity-enhanced transduction a
      t room temperature5, providing a versatile interface between mechanical moti
      on and electrical circuits.</p>' (1551 chars)
   shortdescription => protected'Chair of Nano and Quantum Sensors' (33 chars)
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