Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport

We studied the nonreciprocal transport of layered MoTe_{2}, which undergoes a structural transition from centrosymmetric to the noncentrosymetric polar phase. Careful inspections of the temperature-dependent resistance showed an occurrence of additional phase transition at around T^{*}=50 K inside t...

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Main Authors: Yuki M. Itahashi, Yamato Nohara, Toshiya Ideue, Tomoki Akiba, Hidefumi Takahashi, Shintaro Ishiwata, Yoshihiro Iwasa
Format: Article
Language:English
Published: American Physical Society 2023-05-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.5.L022022
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author Yuki M. Itahashi
Yamato Nohara
Toshiya Ideue
Tomoki Akiba
Hidefumi Takahashi
Shintaro Ishiwata
Yoshihiro Iwasa
author_facet Yuki M. Itahashi
Yamato Nohara
Toshiya Ideue
Tomoki Akiba
Hidefumi Takahashi
Shintaro Ishiwata
Yoshihiro Iwasa
author_sort Yuki M. Itahashi
collection DOAJ
description We studied the nonreciprocal transport of layered MoTe_{2}, which undergoes a structural transition from centrosymmetric to the noncentrosymetric polar phase. Careful inspections of the temperature-dependent resistance showed an occurrence of additional phase transition at around T^{*}=50 K inside the noncentrosymmetric polar phase. We found that the nonreciprocal signal emerges below T^{*}, associated with the filling of the hole pocket. The present result suggests that the mechanism of the nonreciprocal transport is significantly distinct from that in simple polar semiconductors but is highly sensitive to the small hole pocket buried in the major carriers in semimetals.
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spelling doaj.art-5647c5aeacf84a09ad54b1f82d356ec52024-04-12T17:30:39ZengAmerican Physical SocietyPhysical Review Research2643-15642023-05-0152L02202210.1103/PhysRevResearch.5.L022022Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transportYuki M. ItahashiYamato NoharaToshiya IdeueTomoki AkibaHidefumi TakahashiShintaro IshiwataYoshihiro IwasaWe studied the nonreciprocal transport of layered MoTe_{2}, which undergoes a structural transition from centrosymmetric to the noncentrosymetric polar phase. Careful inspections of the temperature-dependent resistance showed an occurrence of additional phase transition at around T^{*}=50 K inside the noncentrosymmetric polar phase. We found that the nonreciprocal signal emerges below T^{*}, associated with the filling of the hole pocket. The present result suggests that the mechanism of the nonreciprocal transport is significantly distinct from that in simple polar semiconductors but is highly sensitive to the small hole pocket buried in the major carriers in semimetals.http://doi.org/10.1103/PhysRevResearch.5.L022022
spellingShingle Yuki M. Itahashi
Yamato Nohara
Toshiya Ideue
Tomoki Akiba
Hidefumi Takahashi
Shintaro Ishiwata
Yoshihiro Iwasa
Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport
Physical Review Research
title Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport
title_full Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport
title_fullStr Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport
title_full_unstemmed Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport
title_short Low-temperature phase transition in polar semimetal T_{d}−MoTe_{2} probed by nonreciprocal transport
title_sort low temperature phase transition in polar semimetal t d mote 2 probed by nonreciprocal transport
url http://doi.org/10.1103/PhysRevResearch.5.L022022
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AT yamatonohara lowtemperaturephasetransitioninpolarsemimetaltdmote2probedbynonreciprocaltransport
AT toshiyaideue lowtemperaturephasetransitioninpolarsemimetaltdmote2probedbynonreciprocaltransport
AT tomokiakiba lowtemperaturephasetransitioninpolarsemimetaltdmote2probedbynonreciprocaltransport
AT hidefumitakahashi lowtemperaturephasetransitioninpolarsemimetaltdmote2probedbynonreciprocaltransport
AT shintaroishiwata lowtemperaturephasetransitioninpolarsemimetaltdmote2probedbynonreciprocaltransport
AT yoshihiroiwasa lowtemperaturephasetransitioninpolarsemimetaltdmote2probedbynonreciprocaltransport