Skip to content

Research at St Andrews

Direct observation of the energy gain underpinning ferromagnetic superexchange in the electronic structure of CrGeTe3

Research output: Contribution to journalArticlepeer-review

Author(s)

Matthew D. Watson, Igor Marković, Federico Mazzola, Akhil Rajan, Edgar A. Morales, David M. Burn, Thorsten Hesjedal, Gerrit van der Laan, Saumya Mukherjee, Timur K. Kim, Chiara Bigi, Ivana Vobornik, Monica Ciomaga Hatnean, Geetha Balakrishnan, Philip D. C. King

School/Research organisations

Abstract

We investigate the temperature-dependent electronic structure of the van der Waals ferromagnet, CrGeTe3. Using angle-resolved photoemission spectroscopy, we identify atomic- and orbital-specific band shifts upon cooling through TC. From these, together with x-ray absorption spectroscopy and x-ray magnetic circular dichroism measurements, we identify the states created by a covalent bond between the Te 5p and the Cr eg orbitals as the primary driver of the ferromagnetic ordering in this system, while it is the Cr t2g states that carry the majority of the spin moment. The t2g states furthermore exhibit a marked bandwidth increase and a remarkable lifetime enhancement upon entering the ordered phase, pointing to a delicate interplay between localized and itinerant states in this family of layered ferromagnets.
Close

Details

Original languageEnglish
Article number205125
JournalPhysical Review. B, Condensed matter and materials physics
Volume101
Publication statusPublished - 18 May 2020

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Strong-coupling charge density wave in monolayer TiSe2

    Watson, M. D., Rajan, A., Antonelli, T., Underwood, K., Marković, I., Mazzola, F., Clark, O. J., Siemann, G-R., Biswas, D., Hunter, A., Jandura, S., Reichstetter, J., Mclaren, M., Le Fèvre, P., Vinai, G. & King, P. D. C., 12 Oct 2020, In: 2D Materials. 8, 1, 015004.

    Research output: Contribution to journalArticlepeer-review

  2. Proximity-induced ferromagnetism and chemical reactivity in few layers VSe2 heterostructures

    Vinai, G., Bigi, C., Rajan, A., Watson, M. D., Lee, T. -L., Mazzola, F., Modesti, S., Barua, S., Ciomaga Hatnean, M., Balakrishnan, G., King, P., Torelli, P., Rossi, G. & Panaccione, G., 8 Jan 2020, In: Physical Review. B, Condensed matter and materials physics. 101, 3, 035404.

    Research output: Contribution to journalArticlepeer-review

  3. Morphology control of epitaxial monolayer transition metal dichalcogenides

    Rajan, A., Underwood, K., Mazzola, F. & King, P., Jan 2020, In: Physical Review Materials. 4, 1, 9 p., 014003.

    Research output: Contribution to journalArticlepeer-review

  4. Electronic structure and enhanced charge-density wave order of monolayer VSe2

    Feng, J., Biswas, D., Akhil, R., Watson, M. D., Mazzola, F., Clark, O. J., Underwood, K., Markovic, I., McLaren, M., Hunter, A., Burn, D. M., Duffy, L. B., Barua, S., Balakrishnan, G., Bertran, F., Le Fevre, P., Kim, T. K., van der Laan, G., Hesjedal, T., Wahl, P. & 1 others, King, P. D. C., 11 Jul 2018, In: Nano Letters. 18, 7, p. 4493-4499 7 p.

    Research output: Contribution to journalLetterpeer-review

  5. Ultrafast triggering of insulator-metal transition in two-dimensional VSe2

    Biswas, D., Jones, A. J. H., Majchrzak, P., Choi, B. K., Lee, T-H., Volckaert, K., Feng, J., Marković, I., Andreatta, F., Kang, C-J., Kim, H. J., Lee, I. H., Jozwiak, C., Rotenberg, E., Bostwick, A., Sanders, C. E., Zhang, Y., Karras, G., Chapman, R. T., Wyatt, A. S. & 7 others, Springate, E., Miwa, J. A., Hofmann, P., King, P. D. C., Chang, Y. J., Lanatà, N. & Ulstrup, S., 18 Feb 2021, In: Nano Letters. Articles ASAP, 8 p.

    Research output: Contribution to journalArticlepeer-review

Related by journal

  1. Physical Review. B, Condensed matter and materials physics (Journal)

    Finlay Morrison (Reviewer)

    2007 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

Related by journal

  1. Decoupled heat and charge rectification as many-body effect in quantum wires

    Stevenson, C. & Braunecker, B., 15 Mar 2021, In: Physical Review. B, Condensed matter and materials physics. 103, 11, 7 p., 115413.

    Research output: Contribution to journalArticlepeer-review

  2. Giant orbital diamagnetism of three-dimensional Dirac electrons in Sr3PbO antiperovskite

    Suetsugu, S., Kitagawa, K., Kariyado, T., Rost, A. W., Nuss, J., Mühle, C., Ogata, M. & Takagi, H., 10 Mar 2021, In: Physical Review B. 103, 11, 11 p., 115117.

    Research output: Contribution to journalArticlepeer-review

  3. Magnetic surface reconstruction in the van der Waals antiferromagnet Fe1+xTe

    Trainer, C., Songvilay, M., Qureshi, N., Stunault, A., Yim, C. M., Rodriguez, E. E., Heil, C., Tsurkan, V., Green, M. A., Loidl, A., Wahl, P. & Stock, C., 6 Jan 2021, In: Physical Review B. 103, 2, 10 p., 024406.

    Research output: Contribution to journalArticlepeer-review

  4. Structural phase transitions in the geometric ferroelectric LaTa O4

    Howieson, G. W., Mishra, K. K., Gibbs, A. S., Katiyar, R. S., Scott, J. F., Morrison, F. D. & Carpenter, M., 29 Jan 2021, In: Physical Review. B, Condensed matter and materials physics. 103, 1, 12 p., 014119.

    Research output: Contribution to journalArticlepeer-review

  5. Changes of Fermi surface topology due to the rhombohedral distortion in SnTe

    O'Neill, C. D., Clark, O. J., Keen, H. D. J., Mazzola, F., Marković, I., Sokolov, D. A., Malekos, A., King, P. D. C., Hermann, A. & Huxley, A. D., 21 Oct 2020, In: Physical Review. B, Condensed matter and materials physics. 102, 5, 155132.

    Research output: Contribution to journalArticlepeer-review

ID: 267525454

Top