Temperature driven anomalous unit-cell c-axis shifts in highly oriented pyrolytic graphite measured at the magic-angle

Filippo S. Boi; Mengjiao Liu; Jia Chen Xia; Omololu Odunmbaku; Ayoub Taallah; Jiqiu Wen

doi:10.1016/j.carbon.2019.01.066

Temperature driven anomalous unit-cell c-axis shifts in highly oriented pyrolytic graphite measured at the magic-angle

Filippo S. Boi^*, Mengjiao Liu, Jia Chen Xia, Omololu Odunmbaku, Ayoub Taallah, Jiqiu Wen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Small misfit-angles in the grain boundary of HOPG interfaces have been recently reported to act as a source of unusual superconductive effects, with significant changes in the electronic-band-structure. These observations may imply that possible structural-transitions can exist with the variation of the temperature. In this letter we report the presence of temperature driven structural-transitions in the temperature range from 298.15 to 673.15 K measured under magic-angle HOPG (0.8° ±0.2° first magic-angle). Novel memory effects consisting in an anomalous reversible linear increase of the c-axis unit cell values of HOPG with the increase of the temperature are described.

Original language	English
Pages (from-to)	690-693
Number of pages	4
Journal	Carbon
Volume	145
DOIs	https://doi.org/10.1016/j.carbon.2019.01.066
Publication status	Published - Apr 2019
Externally published	Yes

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10.1016/j.carbon.2019.01.066

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title = "Temperature driven anomalous unit-cell c-axis shifts in highly oriented pyrolytic graphite measured at the magic-angle",

abstract = "Small misfit-angles in the grain boundary of HOPG interfaces have been recently reported to act as a source of unusual superconductive effects, with significant changes in the electronic-band-structure. These observations may imply that possible structural-transitions can exist with the variation of the temperature. In this letter we report the presence of temperature driven structural-transitions in the temperature range from 298.15 to 673.15 K measured under magic-angle HOPG (0.8° ±0.2° first magic-angle). Novel memory effects consisting in an anomalous reversible linear increase of the c-axis unit cell values of HOPG with the increase of the temperature are described.",

author = "Boi, \{Filippo S.\} and Mengjiao Liu and Xia, \{Jia Chen\} and Omololu Odunmbaku and Ayoub Taallah and Jiqiu Wen",

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year = "2019",

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doi = "10.1016/j.carbon.2019.01.066",

language = "English",

volume = "145",

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T1 - Temperature driven anomalous unit-cell c-axis shifts in highly oriented pyrolytic graphite measured at the magic-angle

AU - Boi, Filippo S.

AU - Liu, Mengjiao

AU - Xia, Jia Chen

AU - Odunmbaku, Omololu

AU - Taallah, Ayoub

AU - Wen, Jiqiu

PY - 2019/4

Y1 - 2019/4

N2 - Small misfit-angles in the grain boundary of HOPG interfaces have been recently reported to act as a source of unusual superconductive effects, with significant changes in the electronic-band-structure. These observations may imply that possible structural-transitions can exist with the variation of the temperature. In this letter we report the presence of temperature driven structural-transitions in the temperature range from 298.15 to 673.15 K measured under magic-angle HOPG (0.8° ±0.2° first magic-angle). Novel memory effects consisting in an anomalous reversible linear increase of the c-axis unit cell values of HOPG with the increase of the temperature are described.

AB - Small misfit-angles in the grain boundary of HOPG interfaces have been recently reported to act as a source of unusual superconductive effects, with significant changes in the electronic-band-structure. These observations may imply that possible structural-transitions can exist with the variation of the temperature. In this letter we report the presence of temperature driven structural-transitions in the temperature range from 298.15 to 673.15 K measured under magic-angle HOPG (0.8° ±0.2° first magic-angle). Novel memory effects consisting in an anomalous reversible linear increase of the c-axis unit cell values of HOPG with the increase of the temperature are described.

UR - https://www.scopus.com/pages/publications/85061331343

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M3 - Article

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SN - 0008-6223

VL - 145

SP - 690

EP - 693

JO - Carbon

JF - Carbon

ER -

Temperature driven anomalous unit-cell c-axis shifts in highly oriented pyrolytic graphite measured at the magic-angle

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