Comment on “Chiral Phase Transition in Charge Ordered 1T - TiSe2 ”

Lin, Meng-Kai; Hlevyack, Joseph A.; Chen, Peng; Liu, Ro-Ya; Chiang, Tai-Chang

doi:10.1103/PhysRevLett.122.229701

Title: Comment on “Chiral Phase Transition in Charge Ordered $1 T$ - ${TiSe}_{2}$ ”

Abstract

A previous report of the emergence of chirality for the ( 2 × 2 × 2 ) charge density wave (CDW) in TiSe₂ has attracted much interest; the drastic symmetry breaking is highly unusual with few precedents. In that study, key evidence was provided by x-ray diffraction measurements of two superlattice reflections, (1.5 1.5 0.5) and (2.5 1 0). The (2.5 1 0) reflection appeared to show an anomalously large intensity and a transition onset at ~7 K below that of the (1.5 1.5 0.5) reflection. These observations, aided by modeling, were cited as evidence for a separate chiral transition. Here, we show that the prior conclusions based on x-ray diffraction are erroneous. There is just one transition, and it is achiral.

Authors:

Lin, Meng-Kai ^[1]; Hlevyack, Joseph A. ^[1]; Chen, Peng ^[2]; Liu, Ro-Ya ^[3]; Chiang, Tai-Chang ^[1]

Univ. of Illinois at Urbana-Champaign, IL (United States)
Univ. of Illinois at Urbana-Champaign, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Univ. of Illinois at Urbana-Champaign, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS); Academia Sinica, Taipei (Taiwan)

Publication Date:: Thu Jun 06 00:00:00 EDT 2019

Research Org.:: Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

OSTI Identifier:: 1598481

Alternate Identifier(s):: OSTI ID: 1546398

Grant/Contract Number:: FG02-07ER46383

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 122; Journal Issue: 22; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Charge density waves; TiSe2; chiral order

Citation Formats


                    Lin, Meng-Kai, Hlevyack, Joseph A., Chen, Peng, Liu, Ro-Ya, and Chiang, Tai-Chang. Comment on “Chiral Phase Transition in Charge Ordered 1T - TiSe2 ”.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevLett.122.229701.

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                    Lin, Meng-Kai, Hlevyack, Joseph A., Chen, Peng, Liu, Ro-Ya, & Chiang, Tai-Chang. Comment on “Chiral Phase Transition in Charge Ordered 1T - TiSe2 ”.  United States.  https://doi.org/10.1103/PhysRevLett.122.229701

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                    Lin, Meng-Kai, Hlevyack, Joseph A., Chen, Peng, Liu, Ro-Ya, and Chiang, Tai-Chang. Thu .  
"Comment on “Chiral Phase Transition in Charge Ordered 1T - TiSe2 ”".  United States.  https://doi.org/10.1103/PhysRevLett.122.229701.  https://www.osti.gov/servlets/purl/1598481.

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@article{osti_1598481,

  title        = {Comment on “Chiral Phase Transition in Charge Ordered 1T - TiSe2 ”},

  author       = {Lin, Meng-Kai and Hlevyack, Joseph A. and Chen, Peng and Liu, Ro-Ya and Chiang, Tai-Chang},

  abstractNote = {A previous report of the emergence of chirality for the ( 2 × 2 × 2 ) charge density wave (CDW) in TiSe2 has attracted much interest; the drastic symmetry breaking is highly unusual with few precedents. In that study, key evidence was provided by x-ray diffraction measurements of two superlattice reflections, (1.5 1.5 0.5) and (2.5 1 0). The (2.5 1 0) reflection appeared to show an anomalously large intensity and a transition onset at ~7 K below that of the (1.5 1.5 0.5) reflection. These observations, aided by modeling, were cited as evidence for a separate chiral transition. Here, we show that the prior conclusions based on x-ray diffraction are erroneous. There is just one transition, and it is achiral.},

  doi          = {10.1103/PhysRevLett.122.229701},

  journal      = {Physical Review Letters},

  number       = 22,

  volume       = 122,

  place        = {United States},

  year         = {Thu Jun 06 00:00:00 EDT 2019},

  month        = {Thu Jun 06 00:00:00 EDT 2019}

}

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Works referenced in this record:

Electronic properties and superlattice formation in the semimetal ${TiSe}_{2}$
journal, November 1976

Di Salvo, F. J.; Moncton, D. E.; Waszczak, J. V.
Physical Review B, Vol. 14, Issue 10
DOI: 10.1103/PhysRevB.14.4321

Chiral Phase Transition in Charge Ordered $1 T − {TiSe}_{2}$
journal, May 2013

Castellan, John-Paul; Rosenkranz, Stephan; Osborn, Ray
Physical Review Letters, Vol. 110, Issue 19
DOI: 10.1103/PhysRevLett.110.196404

Chiral Charge-Density Waves
journal, October 2010

Ishioka, J.; Liu, Y. H.; Shimatake, K.
Physical Review Letters, Vol. 105, Issue 17
DOI: 10.1103/PhysRevLett.105.176401

X-ray study of the charge-density-wave transition in single-layer $TiS e_{2}$
journal, May 2017

Fang, Xin-Yue; Hong, Hawoong; Chen, Peng
Physical Review B, Vol. 95, Issue 20
DOI: 10.1103/PhysRevB.95.201409

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Title: Comment on “Chiral Phase Transition in Charge Ordered 1 T - TiSe 2 ”

Abstract

Citation Formats

Electronic properties and superlattice formation in the semimetal TiSe 2 journal, November 1976

Chiral Phase Transition in Charge Ordered 1 T − TiSe 2 journal, May 2013

Chiral Charge-Density Waves journal, October 2010

X-ray study of the charge-density-wave transition in single-layer TiS e 2 journal, May 2017

Title: Comment on “Chiral Phase Transition in Charge Ordered $1 T$ - ${TiSe}_{2}$ ”

Electronic properties and superlattice formation in the semimetal ${TiSe}_{2}$
journal, November 1976

Chiral Phase Transition in Charge Ordered $1 T − {TiSe}_{2}$
journal, May 2013

Chiral Charge-Density Waves
journal, October 2010

X-ray study of the charge-density-wave transition in single-layer $TiS e_{2}$
journal, May 2017