Enhancement and destruction of spin-Peierls physics in a one-dimensional quantum magnet under pressure
Abstract
The application of pressure reveals a rich phase diagram for the quantum S = 1/2 spin chain material TiOCl. We performed x-ray diffraction on single-crystal samples in a diamond-anvil cell down to T = 4 K and pressures up to 14.5 GPa. Remarkably, the magnetic interaction scale increases dramatically with increasing pressure, as indicated by the high onset temperature of the spin-Peierls phase. The spin-Peierls phase was probed at similar to 6 GPa up to 215 K but possibly extends in temperature to above T = 300 K, indicating the possibility of a quantum singlet state at room temperature. Near the critical pressure for the transition to the more metallic phase, coexisting phases are exemplified by incommensurate order in two directions. Finally, further comparisons are made with the phase diagrams of related spin-Peierls systems that display metallicity and superconductivity under pressure.
- Authors:
-
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Applied Physics
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1423522
- Alternate Identifier(s):
- OSTI ID: 1421297; OSTI ID: 1426199
- Grant/Contract Number:
- AC02-76SF00515; AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 97; Journal Issue: 5; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Rotundu, Costel R., Wen, Jiajia, He, Wei, Choi, Yongseong, Haskel, Daniel, and Lee, Young S. Enhancement and destruction of spin-Peierls physics in a one-dimensional quantum magnet under pressure. United States: N. p., 2018.
Web. doi:10.1103/physrevb.97.054415.
Rotundu, Costel R., Wen, Jiajia, He, Wei, Choi, Yongseong, Haskel, Daniel, & Lee, Young S. Enhancement and destruction of spin-Peierls physics in a one-dimensional quantum magnet under pressure. United States. https://doi.org/10.1103/physrevb.97.054415
Rotundu, Costel R., Wen, Jiajia, He, Wei, Choi, Yongseong, Haskel, Daniel, and Lee, Young S. Thu .
"Enhancement and destruction of spin-Peierls physics in a one-dimensional quantum magnet under pressure". United States. https://doi.org/10.1103/physrevb.97.054415. https://www.osti.gov/servlets/purl/1423522.
@article{osti_1423522,
title = {Enhancement and destruction of spin-Peierls physics in a one-dimensional quantum magnet under pressure},
author = {Rotundu, Costel R. and Wen, Jiajia and He, Wei and Choi, Yongseong and Haskel, Daniel and Lee, Young S.},
abstractNote = {The application of pressure reveals a rich phase diagram for the quantum S = 1/2 spin chain material TiOCl. We performed x-ray diffraction on single-crystal samples in a diamond-anvil cell down to T = 4 K and pressures up to 14.5 GPa. Remarkably, the magnetic interaction scale increases dramatically with increasing pressure, as indicated by the high onset temperature of the spin-Peierls phase. The spin-Peierls phase was probed at similar to 6 GPa up to 215 K but possibly extends in temperature to above T = 300 K, indicating the possibility of a quantum singlet state at room temperature. Near the critical pressure for the transition to the more metallic phase, coexisting phases are exemplified by incommensurate order in two directions. Finally, further comparisons are made with the phase diagrams of related spin-Peierls systems that display metallicity and superconductivity under pressure.},
doi = {10.1103/physrevb.97.054415},
journal = {Physical Review B},
number = 5,
volume = 97,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2018},
month = {Thu Feb 15 00:00:00 EST 2018}
}
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Figures / Tables:
FIG. 1: Structure of TiOCl. (a) Crystal structure of TiOCl. (b) Representation of the commensurate dimer singlet state at T < Tc1 (the spin-Peierls state). (c) Scans along K through the commensurate (0,1.5,0) and (0,2.5,0) peak positions showing the peak intensity normalized to the nearest Bragg peak (0,2,0). For clarity,more »
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Works referencing / citing this record:
The role of magnetic order in VOCl
journal, May 2019
- Ekholm, M.; Schönleber, A.; van Smaalen, S.
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The role of magnetic order in VOCl
text, January 2019
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- arXiv
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