Coherent & Incoherent THz Synchrotron Radiation



Tretiakov, S.; Lutz, M.; Titus, C.J.; de Groot, F.; Nehrkorn, J.; Lohmiller, T.; Holldack, K.; Schnegg, A.; Tarrago, M.F.X.; Zhang, P.; Ye, S.; Aleshin, D.; Pavlov, A.; Novikov, V.; Moret, M.E.: Homoleptic Fe(III) and Fe(IV) Complexes of a Dianionic C3-Symmetric Scorpionate. , Inorganic Chemistry 62 (2023), p. 10613-10625
doi: 10.1021/acs.inorgchem.3c00871

Lima, S.; Pohle, M.H.; Böhme, M.; Görls, H.; Lohmiller, T.; Schnegg, A.; Dinda, R.; Plass, W.: Kink distortion of the pseudo-S4 axis in pseudotetrahedral [N2O2] bis-chelate cobalt(ii) single-ion magnets leads to increased magnetic anisotropy. , Dalton Transactions 52 (2023), p. 9787-9796
doi: 10.1039/d3dt01604h

Pohle, M.H.; Böhme, M.; Lohmiller, T.; Ziegenbalg, S.; Blechschmidt, L.; Görls, H.; Schnegg, A.; Plass, W.: Magnetic Anisotropy and Relaxation of Pseudotetrahedral [N2O2] Bis-Chelate Cobalt(II) Single-Ion Magnets Controlled by Dihedral Twist Through Solvomorphism. , Chemistry - A European Journal 29 (2023), p. e202202966/1-7
doi: 10.1002/chem.202202966


Lohmiller, T.; Spyra, C.J.; Dechert, S.; Demeshko, S.; Bill, E.; Schnegg, A.; Meyer, F: Antisymmetric Spin Exchange in a μ-1,2-Peroxodicopper(II) Complex with an Orthogonal Cu-O-O-Cu Arrangement and S = 1 Spin Ground State Characterized by THz-EPR. , Journal of the American Chemical Society 2 (2022), p. 1134–1143
doi: 10.1021/jacsau.2c00139

Larsen, E.M.H.; Bonde, N.A.; Weihe, H.; Ollivier, J.; Vosch, T.; Lohmiller, T.; Holldack, K.; Schnegg, A.; Perfetti, M.; Bendix, J.: Experimental assignment of long-range magnetic communication through Pd & Pt metallophilic contacts. , Chemical Science 14 (2022), p. 266-276
doi: 10.1039/d2sc05201f


Bone, A.N.; Widener, C.N.; Moseley, D.H.; Liu, Z.; Lu, Z.; Cheng, Y.; Daemen, L.L.; Ozerov, M.; Telser, J.; Thirunavukkuarasu, K.; Smirnov, D.; Greer, S.M.; Hill, S.; Krzystek, J.; Holldack, K.; Aliabadi, A.; Schnegg, A.; Dunbar, K.R.; Xue, Z.L.: Applying Unconventional Spectroscopies to the Single-Molecule Magnets, Co(PPh3)2X-2 (X=Cl, Br, I): Unveiling Magnetic Transitions and Spin-Phonon Coupling. , Chemistry - A European Journal 27 (2021), p. 11110-11125
doi: 10.1002/chem.202100705

Nehrkorn, J.; Valuev, I.A.; Kiskin, M.A.; Bogomyakov, A.S.; Suturina, E.A.; Sheveleva, A.M.; Ovcharenko, V.I.; Holldack, K.; Herrmann, C.; Fedin, MV.; Schnegg, A.; Veber, S.L.: Easy-plane to easy-axis anisotropy switching in a Co(ii) single-ion magnet triggered by the diamagnetic lattice. , Journal of Materials Chemistry C 9 (2021), p. 9446-9452
doi: 10.1039/d1tc01105g

Tarrago, M.; Römelt, C.; Nehrkorn, J.; Schnegg, A.; Neese, F.; Bill, E.; Ye, S.: Experimental and Theoretical Evidence for an Unusual Almost Triply Degenerate Electronic Ground State of Ferrous Tetraphenylporphyrin. , Inorganic Chemistry 60 (2021), p. 4966-4985
doi: 10.1021/acs.inorgchem.1c00031

Korchagin, D. V.; Gureev, Ya. E.; Yureva, E. A.; Shilov, G. V.; Akimov, A. V.; Misochko, E. Ya.; Morgunov, R. B.; Zakharov, K. V.; Vasiliev, A. N.; Palii, A. V.; Lohmiller, T.; Holldack, K.; Aldoshin, S. M.: Field-induced single-ion magnet based on a quasi-octahedral Co(ii) complex with mixed sulfur–oxygen coordination environment. , Dalton Transactions 50 (2021), p. 13815-13822
doi: 10.1039/D1DT02413B

Ott, J.C.; Suturina, E.A.; Kuprov, I.; Nehrkorn, J.; Schnegg, A.; Enders, M.; Gade, L.H.: Observability of paramagnetic NMR signals at over 10 000 ppm chemical shifts. , Angewandte Chemie - International Edition 60 (2021), p. 22856-22864
doi: 10.1002/anie.202107944

Nehrkorn, J.; Greer, S.M.; Malbrecht, B.J.; Anderton, K.J.; Aliabadi, A.; Krzystek, J.; Schnegg, A.; Holldack, K.; Herrmann, C.; Betley, T.A.; Stoll, S.; Hill, S.: Spectroscopic Investigation of a Metal–Metal-Bonded Fe6 Single-Molecule Magnet with an Isolated S = 19/2 Giant-Spin Ground State. , Inorganic Chemistry 60 (2021), p. 4610-4622
doi: 10.1021/acs.inorgchem.0c03595


Pavlov, A.A.; Nehrkorn, J.; Zubkevich, S.V.; Fedin, M.V.; Holldack, K.; Schnegg, A.; Novikov, V.V.: A Synergy and Struggle of EPR, Magnetometry and NMR: A Case Study of Magnetic Interaction Parameters in a Six-Coordinate Cobalt(II) Complex. , Inorganic Chemistry 59 (2020), p. 10746-10755
doi: 10.1021/acs.inorgchem.0c01191

Krzystek, J.; Schnegg, A.; Aliabadi, A.; Holldack, K.; Stoian, S.A.; Ozarowski, A.; Hicks, S.D.; Abu-Omar, M.M.; Thomas, K.E.; Ghosh, A.; Caulfield, P.K.; Tonzetich, Z.J.; Telser, J.: Advanced Paramagnetic Resonance Studies on Manganese and Iron Corroles with a Formal d4 Electron Count. , Inorganic Chemistry 59 (2020), p. 1075-1090
doi: 10.1021/acs.inorgchem.9b02635

Massa, N.E.; del Campo, L.; Holldack, K.; Canizarès, A.; Ta Phuoc, V.; Kayser, P.; Alonso, J.A.: h-ErMnO3 absorbance, reflectivity, and emissivity in the terahertz to mid-infrared from 2 to 1700 K: Carrier screening, Fröhlich resonance, small polarons, and bipolarons. , Physical Review B 102 (2020), p. 134305-134321
doi: 10.1103/PhysRevB.102.134305

Jochim, A.; Lohmiller, T.; Rams, M.; Böhme, M.; Ceglarska, M.; Schnegg, A.; Plass, W.; Näther, C.: Influence of the Coligand onto the Magnetic Anisotropy and the Magnetic Behavior of One-Dimensional Coordination Polymers. , Inorganic Chemistry 59 (2020), p. 8971–8982
doi: 10.1021/acs.inorgchem.0c00815

Bragaglia, V.; Ramsteiner, M.; Schick, D.; Boschker, J.E.; Mitzner, R.; Calarco, R.; Holldack, K.: Phonon anharmonicities and ultrafast dynamics in epitaxial Sb2Te3. , Scientific Reports 10 (2020), p. 12962/1-9
doi: 10.1038/s41598-020-69663-y

Rams, M.; Jochim, A.; Böhme, M.; Lohmiller, T.; Ceglarska, M.; Rams, M.M.; Schnegg, A.; Plass, W.; Näther, C.: Single-Chain Magnet Based on Cobalt(II) Thiocyanate as XXZ Spin Chain. , Chemistry - A European Journal 26 (2020), p. 2837-2851
doi: 10.1002/chem.201903924

Viciano-Chumillas, M.; Blondin, G.; Clémancey, M.; Krzystek, J.; Ozerov, M.; Armentano, D.; Schnegg, A.; Lohmiller, T.; Telser, J.; Lloret, F.; Cano, J.: Single-Ion Magnetic Behaviour in an Iron(III) Porphyrin Complex: A Dichotomy Between High Spin and 5/2-3/2 Spin Admixture. , Chemistry - A European Journal 26 (2020), p. 14242-14251
doi: 10.1002/chem.202003052

Böhme, M.; Jochim, A.; Rams, M.; Lohmiller, T.; Suckert, S.; Schnegg, A.; Plass, W.; Näther, C.: Variation of the Chain Geometry in Isomeric 1D Co(NCS)2 Coordination Polymers and Their Influence on the Magnetic Properties. , Inorganic Chemistry 59 (2020), p. 5325-5338
doi: 10.1021/acs.inorgchem.9b03357


Nehrkorn, J.; Bonke, S.; Aliabadi, A.; Schwalbe, M.; Schnegg, A.: Examination of the Magneto-Structural Effects of Hangman Groups on Ferric Porphyrins by EPR. , Inorganic Chemistry 58 (2019), p. 14228-14237
doi: 10.1021/acs.inorgchem.9b02348

Schoenlein, R.; Elsaesser, T.; Holldack, K.; Huang, Z.; Kapteyn, H.; Murnane, M.; Woerner, M.: Recent advances in ultrafast X-ray sources. , Philosophical Transactions of the Royal Society A 377 (2019), p. 2018038/1-37
doi: 10.1098/rsta.2018.0384

Böhme, Michael: 3d transition metal and lanthanide containing molecular magnets : a theoretical approach. , Jena, Universität, Diss., 2019


Nehrkorn, J.; Veber, S.; Zhukas, L.; Novikov, V.; Nelyubina, Y.; Voloshin, Y.; Holldack, K.; Stoll, S.; Schnegg, A.: Determination of Large Zero-Field Splitting in High-Spin Co(I) Clathrochelates. , Inorganic Chemistry 57 (2018), p. 15330-15340
doi: 10.1021/acs.inorgchem.8b02670

Massa, N.E.; Campo, L. del; Holldack, Karsten; Ta Phuoc, Vinh; Echegut, Patrick; Kayser, Paula; José, A.A.: Far- and mid-infrared emission and reflectivity of orthorhombic and cubic ErMnO3:Polarons and bipolarons. , Physical Review B 98 (2018), p. 184302-184315
doi: 10.1103/PhysRevB.98.184302

Massa, N.E.; Holldack, K.; Sopracase, R.; Ta Phuoc, Vinh; del Campo, Leire; Echegut, Patrick; Antonio, José: Identification of spin wave resonances and crystal eld fi fi levels in simple chromites RCrO3 (R = Pr, Sm, Er) at low temperatures in the THz spectralregion. , Journal of Magnetism and Magnetic Materials 468 (2018), p. 294-303
doi: 10.1016/j.jmmm.2018.07.028


Born, P.; Holldack, K.: Analysis of granular packing structure by scattering of THz radiation. , Review of Scientific Instruments 88 (2017), p. 051802/1-12
doi: 10.1063/1.4983045

Palacios, M.A.; Nehrkorn, J.; Suturina, E.A.; Ruiz, E.; Gómez-Coca, S.; Holldack, K.; Schnegg, A.; Krzystek, J.; Moreno, J.M.; Colacio, E.: Analysis of magnetic anisotropy and the role of magnetic dilution in triggering SMM behaviour in a family of CoII-YIII dinuclear complexes with easy-plane anisotropy. , Chemistry - A European Journal 23 (2017), p. 11649-11661
doi: 10.1002/chem.201702099

Suturina, E.A.; Nehrkorn, J.; Zadrozny, J.; Liu, J.; Atanasov, M.; Weyhermueller, T.; Maganas, D.; Hill, S.; Schnegg, A.; Bill, E.; Long, J.R.; Neese, F.: Magneto-Structural Correlations in Pseudotetrahedral Forms of the [Co(SPh)4]2- Complex Probed by Magnetometry, MCD Spectroscopy, Advanced EPR Techniques, and ab Initio Electronic Structure Calculations. , Inorganic Chemistry 56 (2017), p. 3102-3118
doi: 10.1021/acs.inorgchem.7b00097

Nehrkorn, J.; Holldack, K.; Bittl, R.; Schnegg, A.: Recent progress in synchrotron-based frequency-domain Fourier-transform THz-EPR. , Journal of Magnetic Resonance 280 (2017), p. 10-19
doi: 10.1016/j.jmr.2017.04.001

Bucinsky, L.; Breza, M.; Lee, W.-T.; Hickey, A.K.; Dickie, D.A.; Nieto, I.; DeGayner, J.A.; Harris, T.D.; Meyer, K.; Krzystek, J.; Ozarowski, A.; Nehrkorn, J.; Schnegg, A.; Holldack, K.; Herber, R.H.; Telser, J.; Smith, J.M.: Spectroscopic and Computational Studies of Spin States of Iron(IV) Nitrido and Imido Complexes. , Inorganic Chemistry 56 (2017), p. 4752–4769
doi: 10.1021/acs.inorgchem.7b00512

Schnegg, A.: Very-high-frequency EPR. , In: Daniella Goldfarb, Stefan Stoll [Ed.] : eMagRes, volume 6, issue 1John Wiley & Sons,, 2017. - ISBN 978-0-470-03459-0, p. 115-131
doi: 10.1002/9780470034590.emrstm1526


Müller, R.; Birke, T.; Falkenstern, F.; Glass, H.; Kuske, P.; Ovsyannikov, R.; Schälicke, A.; Schüler, D.; Holldack, K.: BESSY II supports an extensive suite of timing experiments. , In: Christine Petit-Jean-Genaz ... [Ed.] : IPAC2016, Proceedings of the 7th International Particle Accelerator Conference, Busan, ChinaJACoW, 2016. - ISBN 978-3-95450-147-2, p. WEPOW011/2840-2843

Bragaglia, V.; Schnegg, A.; Calarco, R.; Holldack, K.: Epitaxial Ge2Sb2Te5 probed by single cycle THz pulses of coherent synchrotron radiation. , Applied Physics Letters 109 (2016), p. 141903/1-4
doi: 10.1063/1.4963889

Bragaglia, V.; Holldack, K.; Boschker, J.E.; Arciprete, F.; Zallo, E.; Flissikowski, T.; Calarco, R.: Far-Infrared and Raman Spectroscopy Investigation of Phonon Modes in Amorphous and Crystalline Epitaxial GeTe-Sb2Te3 Alloys. , Scientific Reports 6 (2016), p. 28560/1-7
doi: 10.1038/srep28560

Feng, X.; Liu, J.-L.; Pedersen, K.S.; Nehrkorn, J.; Schnegg, A.; Holldack, K.; Bendix, J.; Sigrist, M.; Mutka, H.; Samohvalov, D.; Aguila, D.; Tong, M.-L.; Long, J.R.; Clerac, R.: Multifaceted magnetization dynamics in the mononuclear complex [ReIVCl4(CN)2]2-. , Chemical Communications 52 (2016), p. 12905-12908
doi: 10.1039/c6cc05473k

Holldack, K.; Schnegg, A.: THz Electron Paramagnetic Resonance / THz Spectroscopy. , Journal of Large Scale Research Facilities JLSRF 2 (2016), p. A-51
doi: 10.17815/jlsrf-2-74


Pinkowicz, D.; Southerland, H.I.; Avendano, C.; Prosvirin, A.; Sanders, C.; Wernsdorfer, W.; Pedersen, K.S.; Dreiser, J.; Clerac, R.; Nehrkorn, J.; Simeoni, G.; Schnegg, A.; Holldack, K.; Dunbar, K.R.: Cyanide Single-Molecule Magnets Exhibiting Solvent Dependent Reversible "On" and "Off" Exchange Bias Behavior. , Journal of the American Chemical Society 137 (2015), p. 14406-14422
doi: 10.1021/jacs.5b09378

Nehrkorn, J.; Schnegg, A.; Holldack, K.; Stoll, S.: General Magnetic Transition Dipole Moments for Electron Paramagnetic Resonance. , Physical Review Letters 114 (2015), p. 010801/1-5
doi: 10.1103/PhysRevLett.114.010801

Born, Philip; Holldack, Karsten; Sperl, Matthias: Particle characterization using THz spectroscopy. , Granular Matter 17 (2015), p. 531-536
doi: 10.1007/s10035-015-0578-9

Förster, D.; Lindenau, B.; Leyendecker, M.; Janssen, F.; Winkler, C.; Schumann, F.O.; Kirschner, J.; Holldack, K.; Föhlisch, A.: Phase-locked MHz pulse selector for x-ray sources. , Optics Letters 40 (2015), p. 2265-2268
doi: 10.1364/OL.40.002265

Nehrkorn, J.; Telser, J.; Holldack, K.; Stoll, S.; Schnegg, A.: Simulating Frequency-Domain Electron Paramagnetic Resonance: Bridging the Gap between Experiment and Magnetic Parameters for High-Spin Transition-Metal Ion Complexes. , The Journal of Physical Chemistry B 119 (2015), p. 13816 - 13824
doi: 10.1021/acs.jpcb.5b04156

Vogel, C.; Stemann, J.; Holldack, K.; Sekine, R.; Lipiec, E.; Adam, C.: Thermal treatment of chromium(III) oxide with carbonates analyzed by far-infrared spectroscopy. , Applied Spectroscopy 69 (2015), p. 1210-1214
doi: 10.1366/15-07878

Liebhaber, M.; Mews, M.; Schulze, T.F.; Korte, L.; Rech, B.; Lips, K.: Valence band offset in heterojunctions between crystalline silicon and amorphous silicon (sub)oxides (a-SiOx:H, 0<x<2). , Applied Physics Letters 106 (2015), p. 031601/1-5
doi: 10.1063/1.4906195


Dreiser, J.; Pedersen, K.S.; Schnegg, A.; Holldack, K.; Nehrkorn, J.; Sigrist, M.; Tregenna-Piggott, P.; Mutka, H.; Weihe, H.; Mironov, V.S.; Bendix, J.; Waldmann, O.: Anisotropic Exchange Coupling in the Single-Molecule Magnets (NEt4)[MnIII2(5-Brsalen)2(MeOH)2MIII(CN)6] (M = Ru,Os). , Chemistry - A European Journal 19 (2013), p. 3693-3701
doi: 10.1002/chem.201203781

Forshaw, A.P.; Smith, J.M.; Ozarowski, A.; Krzystek, J.; Smirnov, D.; Zvyagin, S.A.; Harris, T.D.; Karunadasa, H.I.; Zadrozny, J.M.; Schnegg, A.; Holldack, K.; Jackson, T.A.; Alamiri, A.; Barnes, D.M.; Telser, J.: Low-Spin Hexa-Coordinate Mn(III): Synthesis and Spectroscopic Investigation of Homoleptic Tris(pyrazolyl)borate and Tris(carbene)borate Complexes. , Inorganic Chemistry 52 (2013), p. 144-159
doi: 10.1021/ic301630d

Nehrkorn, J.; Martins, B.M.; Holldack, K.; Stoll, S.; Dobbek, H.; Bittl, R.; Schnegg, A.: Zero-field splittings in metHb and metMb with aquo and fluoro ligands: a FD-FT THz-EPR study. , Molecular Physics 111 (2013), p. 2696-2707
doi: 10.1080/00268976.2013.809806


Pedersen, K.S.; Dreiser, J.; Nehrkorn, J.; Gysler, M.; Schau-Magnussen, M.; Schnegg, A.; Holldack, K.; Bittl, R.; Piligkos, S.; Weihe, H.; Tregenna-Piggott, P.; Waldmann, O.; Bendix, J.: A linear single-molecule magnet based on [Ru-III(CN)6]3-. , Chemical Communications 47 (2011), p. 6918-6920
doi: 10.1039/c1cc12158h

Dreiser, J.; Schnegg, A.; Holldack, K.; Pedersen, K.S.; Schau-Magnussen, M.; Nehrkorn, J.; Tregenna-Piggott, P.; Mutka, H.; Weihe, H.; Bendix, J.; Waldmann, O.: Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN)6]. , Chemistry - A European Journal 17 (2011), p. 7492-7498
doi: 10.1002/chem.201100581