# Magnetic frustration in a metallic fcc lattice

## Abstract

Magnetic frustration in metals is scarce and hard to pinpoint, but exciting due to the possibility of the emergence of fascinating novel phases. The cubic intermetallic compound HoInCu_{4} with all holmium atoms on an fcc lattice exhibits partial magnetic frustration, yielding a ground state where half of the Ho moments remain without long-range order, as evidenced by our neutron scattering experiments. The substitution of In with Cd results in HoCdCu_{4} in a full breakdown of magnetic frustration. Consequently we found a fully ordered magnetic structure in our neutron diffraction experiments. These findings are in agreement with the local energy scales and crystal electric field excitations, which we determined from specific heat and inelastic neutron scattering data. The electronic density of states for the itinerant bands acts as a tuning parameter for the ratio between nearest-neighbor and next-nearest-neighbor interactions and thus for magnetic frustration.

- Authors:

- Publication Date:

- Research Org.:
- Univ. of Delaware, Newark, DE (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)

- OSTI Identifier:
- 1601077

- Alternate Identifier(s):
- OSTI ID: 1697978

- Grant/Contract Number:
- SC0008885

- Resource Type:
- Published Article

- Journal Name:
- Physical Review Research

- Additional Journal Information:
- Journal Name: Physical Review Research Journal Volume: 2 Journal Issue: 1; Journal ID: ISSN 2643-1564

- Publisher:
- American Physical Society (APS)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Frustrated magnetism; Magnetic phase transitions; Spin-orbit coupling

### Citation Formats

```
Stockert, Oliver, Hoffmann, Jens-Uwe, Mühlbauer, Martin, Senyshyn, Anatoliy, Koza, Michael M., Tsirlin, Alexander A., Wolf, F. Maximilian, Bachus, Sebastian, Gegenwart, Philipp, Movshovich, Roman, Bobev, Svilen, and Fritsch, Veronika. Magnetic frustration in a metallic fcc lattice. United States: N. p., 2020.
Web. doi:10.1103/PhysRevResearch.2.013183.
```

```
Stockert, Oliver, Hoffmann, Jens-Uwe, Mühlbauer, Martin, Senyshyn, Anatoliy, Koza, Michael M., Tsirlin, Alexander A., Wolf, F. Maximilian, Bachus, Sebastian, Gegenwart, Philipp, Movshovich, Roman, Bobev, Svilen, & Fritsch, Veronika. Magnetic frustration in a metallic fcc lattice. United States. doi:https://doi.org/10.1103/PhysRevResearch.2.013183
```

```
Stockert, Oliver, Hoffmann, Jens-Uwe, Mühlbauer, Martin, Senyshyn, Anatoliy, Koza, Michael M., Tsirlin, Alexander A., Wolf, F. Maximilian, Bachus, Sebastian, Gegenwart, Philipp, Movshovich, Roman, Bobev, Svilen, and Fritsch, Veronika. Fri .
"Magnetic frustration in a metallic fcc lattice". United States. doi:https://doi.org/10.1103/PhysRevResearch.2.013183.
```

```
@article{osti_1601077,
```

title = {Magnetic frustration in a metallic fcc lattice},

author = {Stockert, Oliver and Hoffmann, Jens-Uwe and Mühlbauer, Martin and Senyshyn, Anatoliy and Koza, Michael M. and Tsirlin, Alexander A. and Wolf, F. Maximilian and Bachus, Sebastian and Gegenwart, Philipp and Movshovich, Roman and Bobev, Svilen and Fritsch, Veronika},

abstractNote = {Magnetic frustration in metals is scarce and hard to pinpoint, but exciting due to the possibility of the emergence of fascinating novel phases. The cubic intermetallic compound HoInCu4 with all holmium atoms on an fcc lattice exhibits partial magnetic frustration, yielding a ground state where half of the Ho moments remain without long-range order, as evidenced by our neutron scattering experiments. The substitution of In with Cd results in HoCdCu4 in a full breakdown of magnetic frustration. Consequently we found a fully ordered magnetic structure in our neutron diffraction experiments. These findings are in agreement with the local energy scales and crystal electric field excitations, which we determined from specific heat and inelastic neutron scattering data. The electronic density of states for the itinerant bands acts as a tuning parameter for the ratio between nearest-neighbor and next-nearest-neighbor interactions and thus for magnetic frustration.},

doi = {10.1103/PhysRevResearch.2.013183},

journal = {Physical Review Research},

number = 1,

volume = 2,

place = {United States},

year = {2020},

month = {2}

}

DOI: https://doi.org/10.1103/PhysRevResearch.2.013183

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